Music and Emotions in Non-Human Animals from Biological and Comparative Perspectives

The effects of sound stimulation as a sensorial environmental enrichment for captive animals have been studied. When appropriately implemented for farm animals, it can improve welfare, health, and productivity. Furthermore, there are indications that music can induce positive emotions in non-human animals, similar to humans. Emotion is a functional state of the organism involving both physiological processes, mediated by neuroendocrine regulation, and changes in behavior, affecting various aspects, including contextual perception and welfare. As there is very limited information on non-human animals, the objective of this review is to highlight what is known about these processes from human biological and comparative perspectives and stimulate future research on using music to improve animal welfare.

Emotional and temporal order effects - a comparison between word-cued and important autobiographical memories recall orders

The retrieval mechanisms associated with the recall of autobiographical memories (AMs) may differ according to the cueing method used to elicit AMs. In the present study, we provide a systematic comparison between word-cued and important AMs in terms of two recall order effects, namely a temporal and an emotional order effect. The sample comprised 104 adults aged between 59 and 90 years. On two measurement occasions, participants recalled up to 20 word-cued and 15 important AMs. For each memory, participants provided their age at the time when the event occurred (age-at-event) and rated its emotionality. Order effects were analysed based on multivariate multilevel model with autoregressive effects for emotionality and age-at-event, respectively. Whereas word-cued AMs showed a stronger emotional order effect, important AMs were recalled temporarily ordered. Individuals differed in the extent to which they ordered AMs along a temporal or emotional dimension. These differences could partly be explained by personality traits. For instance, higher scores on neuroticism were associated with a stronger emotional order effect in both memory types. Findings are discussed in terms of the retrieval mechanisms that are involved in the recall of word-cued and important memory recall and how they may be affected by personality.

The effects of low familial support and depressive symptomatology on suicide attempt among adolescents: A sex-based assessment

INTRODUCTION

Researchers have traditionally tested the benefits of social support, showing that it promotes positive health outcomes. There is a lack of research assessing the deleterious impact of poor social support. Low familial support can serve as a stressor in the lives of adolescents, ultimately fostering negative emotions and maladaptive coping, such as attempted suicide.

METHODS

Guided by general strain theory, this study uses two waves of data from the National Study of Adolescence to Adult Health (N = 13,827; n = 7105 for females, n = 6722 for males) to test the effect of low familial support on depressive symptomatology and whether the latter mediates the effect of low familial support on suicide attempt for both males and females.

RESULTS

The analyses reveal that low familial support is positively and significantly associated with depressive symptomatology for male and female adolescents. Regarding suicide attempt, adolescents with lower levels of familial support and higher depressive symptomatology were likely to report attempting suicide. Contrary to theoretical expectations, depressive symptomatology did not mediate the relationship between low familial support and suicide attempt.

CONCLUSIONS

Overall, the results provide justification for efforts to provide resources to adolescents who lack familial support.

When unpleasantness meets feminines: a behavioural study on gender agreement and emotionality

The emotional connotation of words is known to affect word and sentence processing. However, the when and how of the interaction between emotion and grammar are still up for debate. In this behavioural experiment, 35 female university students read noun phrases (NPs) composed by a determiner and a noun in their L1 (Spanish), and were asked to indicate if the NPs were grammatically correct (elmasc camareromasc) or not (*lafem tornillomasc; i.e. a gender agreement task). The type of gender (arbitrary/natural), the emotionality (unpleasant/neutral), and the gender class (feminine/masculine) of the nouns were manipulated. We found an overall grammaticality effect, responses being faster in grammatically correct trials than in incorrect ones. However, the effects of emotionality and gender class varied depending on gender type. For arbitrary gender, the grammaticality effect was greater in feminine nouns than in masculine nouns and independent of emotionality. For natural gender, the grammaticality effect interacted with gender class and emotionality, this effect only emerging in unpleasant stimuli for feminine nouns. Our results reveal that it is possible to find emotional effects at the behavioural level in an intrinsically grammatical task. Yet, these effects depend on gender properties like the type of gender and the gender class.

Effects of radiofrequency field from 5G communications on the spatial memory and emotionality in mice

The rapid development of 5G network technology has gained much popularity as well as concerns about its adverse effects. In this study, we investigated the effects of 4.9 GHz (one of working frequencies of 5G communication) radiofrequency (RF) field on emotional behaviours and spatial memory in adult male mice. Open field test (OFT), tail suspension test (TST) and Y maze were used to evaluate anxiety, depression-like behaviour and spatial memory ability, respectively. It was found that the anxiety-like behaviour and spatial memory ability of mice did not change, but the depression-like behaviour was induced in mice after 4.9 GHz RF exposure. In addition, the number of neurons significantly reduced and the level of pyroptosis obviously increased in amygdala rather than hippocampus. These results suggested that 4.9 GHz RF exposure could induce depression-like behaviour, which might be associated with the neuronal pyroptosis in amygdala.

Aesthetic Motivation Impacts Judgments of Others' Prosociality and Mental Life

The ability to infer others' prosocial vs. antisocial behavioral tendencies from minimal information is core to social reasoning. Aesthetic motivation (the value or appreciation of aesthetic beauty) is linked with prosocial tendencies, raising the question of whether this factor is used in interpersonal reasoning and in the attribution of mental capacities. We propose and test a model of this reasoning, predicting that evidence of others' aesthetic motivations should impact judgments of others' prosocial (and antisocial) tendencies by signaling a heightened capacity for emotional experience. In a series of four pre-registered experiments (total N = 1440), participants saw pairs of characters (as photos/vignettes), and judged which in each pair showed more of a mental capacity of interest. Distractor items prevented participants from guessing the hypothesis. For one critical pair of characters, both characters performed the same activity (music listening, painting, cooking, exercising, being in nature, doing math), but one was motivated by the activities' aesthetic value, and the other by its functional value. Across all activities, participants robustly chose aesthetically-motivated characters as more likely to behave compassionately (Exp. 1; 3), less likely to behave selfishly/manipulatively (Exp. 1; 3), and as more emotionally sensitive, but not more intelligent (Exp. 2; 3; 4). Emotional sensitivity best predicted compassionate behavior judgements (Exp. 3). Aesthetically-motivated characters were not reliably chosen as more helpful; intelligence best predicted helpfulness judgements (Exp. 4). Evidence of aesthetic motivation conveys important social information about others, impacting fundamental interpersonal judgments about others' mental life and social behavior.

An enriched maternal environment and stereotypies of sows differentially affect the neuro-epigenome of brain regions related to emotionality in their piglets

Epigenetic mechanisms are important modulators of neurodevelopmental outcomes in the offspring of animals challenged during pregnancy. Pregnant sows living in a confined environment are challenged with stress and lack of stimulation which may result in the expression of stereotypies (repetitive behaviours without an apparent function). Little attention has been devoted to the postnatal effects of maternal stereotypies in the offspring. We investigated how the environment and stereotypies of pregnant sows affected the neuro-epigenome of their piglets. We focused on the amygdala, frontal cortex, and hippocampus, brain regions related to emotionality, learning, memory, and stress response. Differentially methylated regions (DMRs) were investigated in these brain regions of male piglets born from sows kept in an enriched vs a barren environment. Within the latter group of piglets, we compared the brain methylomes of piglets born from sows expressing stereotypies vs sows not expressing stereotypies. DMRs emerged in each comparison. While the epigenome of the hippocampus and frontal cortex of piglets is mainly affected by the maternal environment, the epigenome of the amygdala is mainly affected by maternal stereotypies. The molecular pathways and mechanisms triggered in the brains of piglets by maternal environment or stereotypies are different, which is reflected on the differential gene function associated to the DMRs found in each piglets' brain region . The present study is the first to investigate the neuro-epigenomic effects of maternal enrichment in pigs' offspring and the first to investigate the neuro-epigenomic effects of maternal stereotypies in the offspring of a mammal.

Associations between early poverty exposure and adolescent well-being: The role of childhood negative emotionality

Using a longitudinal design (Wave 1 n = 164, Mage = 3.57 years, 54% female, predominantly White and French-speaking), the current study sought to answer two questions: 1) does poverty influence children's negative emotionality through heightened family-level, poverty-related stress? and 2) is negative emotionality, in turn, predictive of adolescent internalizing symptoms, externalizing behaviors, cognitive abilities, and physical health? Results confirmed an indirect pathway from family poverty to child emotionality through poverty-related stress. In addition, negative emotionality was associated with adolescent internalizing symptoms, attention difficulties, and physical health, but not externalizing symptoms, even when controlling for early poverty exposure.

Characteristics of positive and negative autobiographical memories central to identity: emotionality, vividness, rehearsal, rumination, and reflection

Introduction

Some events are remembered as more central to a person's identity than others. However, it is not entirely clear what characterizes these autobiographical memories central to one's identity. In this study, we examined the effects of various characteristics on centrality to identity of positive and negative memories. Characteristics such as emotionality, vividness, and how frequently a memory is retrieved and shared with others as well as ruminative and reflective self-foci were studied.

Methods

The sample included 356 participants (18-92 years of age). First, participants responded to demographic questions and individual difference questionnaires. Next, they recalled memories in response to 12 emotional cue words. The cue words were balanced for emotional valence (i.e., six positive and six negative) and presented in a random order. After retrieving all memories, participants rated them regarding centrality, using the short seven-item Centrality of Event Scale and other memory characteristics, on a seven-point Likert scale. Multivariate multilevel regression was used for data analyzes, to consider multiple characteristics at the same time and account for data dependency within individual.

Results

The results showed that emotionality, vividness, and frequency of memory retrieval contributed to higher centrality of memories, and employing a reflective self-focus resulted in rating memories as more central. In specific cases, these characteristics were associated differently with centrality of positive and negative memories.

Discussion

Central memories can be perceived as markers in a person's life story. The findings of this study suggest that these marker events are also highly available in a person's memory system, by being actively emotional, visually rich, and frequently retrieved. Moreover, not only memory characteristics but also individual's features are important to fully understand the autobiographical memory centrality.

Reliable change in developmental outcomes of Brain Balance® participants stratified by baseline severity

The effects of comprehensive multimodal programs on developmental outcomes have not been well-studied. Emerging evidence suggests a possible role for the Brain Balance® (BB) program, a multimodal training program, in serving as a nonpharmacologic approach to addressing cognitive, attentional, and emotional issues in youth. In this analysis, we examined the effects of 3 months of participation in the BB program on the outcomes of children and adolescents with developmental difficulties (N = 4,041; aged 4-18 years; 69.7% male). Parent-rated scores on the Brain Balance-Multidomain Developmental Survey (BB-MDS) were used to assess six areas at baseline and post-program: (1) negative emotionality; (2) reading/writing difficulties; (3) hyperactive/disruptive behavior; (4) academic disengagement; (5) motor/coordination problems; and (6) social communication problems. To estimate change from pre- to post-program, we calculated effect size (Cohen's d) and the Reliable Change Index (RCI) for groups stratified by baseline severity. There was a very large effect size for the moderate/high severity (d = 1.63) and extreme severity (d = 2.08) groups, and a large effect size for the mild severity group (d = 0.87). The average percentage of participants who observed reliable change over all BB-MDS domains was 60.1% (RCICTT) for extreme severity, 46.6% (RCICTT) for moderate/high severity, and 21.1% (RCICTT) for baseline mild severity. In additional assessments of primitive reflexes and sensory motor activity, students demonstrated significantly diminished primitive reflexes from pre- to post-participation and significant improvements in sensory motor skills including fine motor skills, gait and aerobic ability, proprioception, rhythm and timing, and eye-gaze stability. Overall, these results demonstrate improvements in primitive reflex integration and sensory motor skills, as well as statistically significant reliable change in emotionality, reading/writing, behavior, academic engagement, motor skills, and social communication in BB participants from pre- to post-program, with the probability and degree of change increasing as the participants' baseline severity increases. These results contribute to the growing literature on the need for evidence-based nonpharmacologic approaches to addressing developmental issues. Future research with well-controlled designs, longitudinal follow-up, implementation across settings, and participant groups in which diagnoses are known, will help to more fully characterize the effects of the BB program.

Evidence for phosphorylation-dependent, dynamic, regulation of mGlu5 and Homer2 in expression of cocaine aversion in mice

Cocaine-induced changes in the expression of the glutamate-related scaffolding protein Homer2 influence this drug's psychostimulant and rewarding properties. In response to neuronal activity, Homer2 is phosphorylated on S117/S216 by calcium-calmodulin kinase IIα (CaMKIIα), which induces a rapid dissociation of mGlu5-Homer2 scaffolds. Herein, we examined the requirement for Homer2 phosphorylation in cocaine-induced changes in mGlu5-Homer2 coupling, to include behavioral sensitivity to cocaine. For this, mice with alanine point mutations at (S117/216)-Homer2 (Homer2^AA/AA ) were generated and we determined their affective, cognitive and sensorimotor phenotypes, as well as cocaine-induced changes in conditioned reward and motor hyperactivity. The Homer2^AA/AA mutation prevented activity-dependent phosphorylation of S216 Homer2 in cortical neurons, but Homer2^AA/AA mice did not differ from wild-type controls with respect to Morris maze performance, acoustic startle, spontaneous or cocaine-induced locomotion. Homer2^AA/AA mice exhibited signs of hypo-anxiety similar to the phenotype of transgenic mice with a deficit in signal-regulated mGluR5 phosphorylation (Grm5^AA/AA ). However, opposite of Grm5^AA/AA mice, Homer2^AA/AA mice were less sensitive to the aversive properties of high-dose cocaine under both place- and taste-conditioning procedures. Acute injection with cocaine caused dissociation of mGluR5 and Homer2 in striatal lysates from WT, but not Homer2^AA/AA mice, suggesting a molecular basis for the deficit in cocaine aversion. These findings indicate that CaMKIIα-dependent phosphorylation of Homer2 gates the negative motivational valence of high-dose cocaine via regulation of mGlu5 binding, furthering an important role for dynamic changes in mGlu5-Homer interactions in addiction vulnerability.Significance statementGlobally, psychostimulant use has again risen to reach epidemic proportions, particularly in the United States. Yet, we continue to face a knowledge gap regarding the biological bases of psychostimulant addiction vulnerability to inform disease prognosis and treatment-based recovery. Herein, we show that the psychomotor stimulant cocaine induces the uncoupling of the mGlu5 glutamate receptor from its scaffolding protein Homer2 in brain. Using a transgenic mouse model with deficits cocaine-induced uncoupling of mGlu5-Homer2, we demonstrate an important role for Homer2 scaffolding of mGlu5 in regulating cocaine's aversive properties, without influencing cocaine reward. Findings suggest that environmental factors, to include cocaine exposure, that affect mGlu5-Homer2 scaffolding dynamics may contribute to an individual's subjective response to cocaine to influence addiction vulnerability.

Concurrent and predictive relations of multidimensional perfectionism with test anxiety in secondary school students

Background and Objectives. Perfectionism is a multidimensional personality trait often viewed as a risk factor for developing test anxiety. A recent meta-analysis showed positive correlations of perfectionism facets with test anxiety dimensions. However, all previous research into the perfectionism-test anxiety relation has been cross-sectional. Thus, it is unclear whether perfectionism facets longitudinally predict test anxiety.Design. In this study, we investigated concurrent and predictive relations of two perfectionism facets with cognitive test anxiety (worry) and affective test anxiety (emotionality) in secondary school students (N = 478, mean age at T1 = 11.95 years). At T1, participants completed self-report measures of text anxiety and perfectionism. Almost five years later, participants again reported their test anxiety levels (T2).Results. Concern over mistakes and doubts correlated positively with current worry and emotionality. Personal standards correlated positively with current worry. Neither concern over mistakes and doubts nor personal standards significantly predicted later test anxiety beyond baseline.Conclusions. Perfectionism and test anxiety share common manifestations. Yet, this study raises the question whether perfectionism truly influences test anxiety development or whether other factors (e.g., construct overlap) may explain the identified cross-sectional correlations. Future research is needed to provide more nuanced insights into perfectionism-test anxiety associations.

Effects of Prolonged High-Fat Diet Consumption Starting at Different Ages on Behavioral Parameters and Hippocampal Neuroplasticity in Male Mice

BACKGROUND

The overconsumption of a high-fat diet (HFD) has been repeatedly blamed as being a possible contributor to the global prevalence of emotional problems in modern society. Our group recently demonstrated the deleterious effect of a chronic HFD throughout adulthood on both emotional behavior and neuroplasticity markers in mice. As a heightened preference for palatable HFDs from the time of the juvenile period (when the brain is particularly vulnerable to environmental insults) is universal among populations around the world, a comparison of the consequences of chronic HFDs starting from juveniles or adults will assist in obtaining better knowledge of the impact that chronic HFDs have on mental health, thus potentially leading to the discovery of more effective strategies for reducing the incidence of psychiatric disorders.

METHODS

In the present study, male C57BL/6J mice with an initial age of 4 weeks (IA-4 W) or 8 weeks (IA-8 W) were separately assigned to two subgroups and fed either a control diet (CD, 10 kJ% from fat) or HFD (60 kJ% from fat) for 9 months followed by an analysis focused on metabolic, emotional behavioral, and neuroplastic profiles.

RESULTS

The results illustrated that, in addition to abnormal glucolipid metabolism and insulin sensitivity, mice on a chronic HFD exhibited increased levels of anxiety and depression-like behaviors and aberrant hippocampal neuroplasticity. When compared with IA-8 W mice, several changes indicating systemic metabolic disturbance and neurobehavioral disorder after chronic HFD consumption were aggravated in IA-4 W mice, accompanied by exaggerated impairments in hippocampal insulin sensitivity and neurogenesis.

CONCLUSIONS

These results not only provide in vivo evidence that the juvenile stage is a critical period of vulnerability to detrimental effects of HFD consumption on metabolic and neuronal function but also suggest dampened hippocampal insulin signaling as a potential link between prolonged HFD consumption and negative neurobehavioral outcomes. Considering the substantial burden posed by psychiatric disorders and the high prevalence of HFD among youth, these observations are meaningful for raising awareness of the harmful effects of excessive dietary fat intake and developing strategy for preventing mental disorders.

Does Imagery Ability Matter for the Relationship Between Temperament and Self-Confidence in Team and Individual Sport Disciplines?

The main purpose of our study was to investigate the relationship among temperamental traits, a general tendency to use imagery, and self-confidence in sport. The specific aim was to verify if general imagery mediates the relationship between temperament and self-confidence in sport, but also with respect to individual and team sport disciplines. The study involved 144 athletes aged 19-25 years (75 men and 69 women) with different lengths of training (from 1 month to 18 years) and presented different sports levels: international (n = 12), national (n = 46), and recreational (n = 86). They also represented individual (n = 73) and team (n = 68) sports. The Imagination in Sport Questionnaire (ISQ), Trait Sports Confidence Inventory (TSCI-PL), and Temperament Questionnaire (EAS) were all completed by the participants. Results indicate that self-confidence is explained in about 13% by temperament and general imagery, but only general imagery (b = 0.22; p < 0.05) and negative axes of the temperament-emotionality (b = -0.26; p < 0.05). The test of the indirect effect of the negative axes of the temperament on self-confidence through general imagery, conducted by Preacher and Hayes bootstrapping procedure, revealed significant mediation [b = 0.37; 95% CI = (0.09; 0.68); R 2 Med = 0.46] suggesting that about 46% of variance explained in self-confidence by emotionality is related to general imagery. The other 3% of variance explained in self-confidence by the positive temperament axes is related to general imagery, however, it was insignificant. The general imagery explains the relationship between emotionality and self-confidence only in individual sports athletes.

Associations of experiential avoidance with burnout, wellbeing, and productivity loss among police officers: The mediating role of negative and positive affect

OBJECTIVES

The current study aims to investigate the indirect associations between experiential avoidance (EA) and burnout, wellbeing, and productivity loss (PL) via the mediating role of positive and negative emotions among police officers.

METHODS

Data were collected on 187 officers (84% male) aged 21-64 years between 2019 and 2020. Participants completed online self-report measures.

RESULTS

EA was indirectly associated with burnout via positive and negative affect. EA was indirectly associated with wellbeing through positive affect, positive affect and burnout, and negative affect and burnout. Finally, EA was indirectly associated with PL via positive affect and burnout, and negative affect and burnout.

CONCLUSION

Results provide support for the role of EA in officers' wellbeing and job performance via increasing negative affect and decreasing positive affect. This highlights the importance of interventions, such as acceptance and commitment therapy that target acceptance and psychological flexibility.

The Hexaco Personality Traits of Higher Achievers at the University Level

This study attempted to explore the personality traits of higher achievers at the university level. The core objective of this investigation was to illustrate the nature of personality traits of the higher achievers' students. To study this phenomenon, a quantitative research approach was used. The students were chosen by using a purposive sampling technique and included 758 high achievers enrolled in various programs at the Chinese universities. Based on the Hexaco model of personality, a questionnaire was used to gather information from respondents as a research tool to examine the personality traits of position holders after an extensive review of the relevant literature. Tool validity was determined by following the face, content, construct (convergent and discriminant validity) validation process. This investigation concluded that honesty, emotionality, and openness to experience were very high among the higher achievers' students. Only honesty in female higher achievers' students was significantly high than male, remaining factors "extraversion, agreeableness, conscientiousness, and openness to experience" were significantly high among male higher achievers' students. Moreover, the higher achievers of science group students were more extraversion, agreeableness, and conscientiousness than arts group students. However, higher achievers in hostels were more emotional and agreeableness than the day scholars. Overall step-wise regression analysis, indicated that agreeableness and extraversion factor has significant influence on higher achievers.

Circadian and Sleep Modulation of Dreaming in Women with Major Depression

Growing evidence indicates an association between reduced dream recall and depressive symptomatology. Here, we tested the prediction that reduced dream recall in individuals experiencing major depressive disorder (MDD) is due to alterations in circadian and sleep processes. Nine young healthy women (20−31 years) and eight young unmedicated women (20−31 years) diagnosed with MDD underwent a 40 h multiple nap protocol with ten alternating cycles of 150 min wake/75 min sleep under a stringently controlled circadian laboratory protocol. After each nap, we assessed dream recall, number of dreams and dream emotional load using the Sleep Mentation Questionnaire. Dream recall and the number of dreams did not significantly differ between groups (pFDR > 0.1). However, there was a significant difference for the dream emotional load (interaction of “Group” vs. “Time”, pFDR = 0.01). Women with MDD had a two-fold higher (negative) emotional load as compared to healthy control women, particularly after naps during the circadian night (between ~22:00 h and ~05:00 h; Tukey−Kramer test, p = 0.009). Furthermore, higher (negative) dream emotional load was associated with impaired mood levels in both groups (R2 = 0.71; p < 0.001). Our findings suggest that the circadian and sleep modulation of dreaming may remain intact in unmedicated young women experiencing MDD.

Positive and Negative Selective Allosteric Modulators of α5 GABAA Receptors: Effects on Emotionality, Motivation, and Motor Function in the 5xFAD Model of Alzheimer's Disease

BACKGROUND

Positive and negative allosteric modulators of α5 GABAA receptors (PAM and NAM, respectively) are worthy of investigation as putative treatments of Alzheimer's disease (AD). However, their potential to modify a dynamic range of behaviors in AD models needs to be systematically examined.

OBJECTIVE

The study aimed to assess effects of MP-III-022 as PAM and PWZ-029 as NAM on emotional reactivity, motivation, and motor function, as well as on gene expression of GABRA2, GABRA3 and GABRA5 subunit of GABAA receptors in prefrontal cortex (PFC) and hippocampus (HC) in 5xFAD mice, as an early-onset transgenic AD model.

METHODS

The 6-month-old 5xFAD transgenic and non-transgenic mice of both genders underwent a battery of reflexes and behavioral tests (sensorimotor tests, elevated plus maze, and open field) after 10-day intraperitoneal treatment with MP-III-022, PWZ-029, or solvent. The behavioral battery was followed by qPCR analysis of gene expression.

RESULTS

MP-III-022 induced a decline in motor function, while PWZ-029 further decreased emotionality of transgenic males, as compared to the transgenic control. No interfering effects on non-cognitive behavior were observed in female mice. In HC, both treatments reversed reciprocal GABRA2 and GABRA3 changes in transgenic females. In PFC, MP-III-022 decreased GABRA5 in both genders, while PWZ-029 increased GABRA2 in male transgenic animals.

CONCLUSION

Gender-dependent protracted effects of PAMs and NAMs in AD model, with detrimental impact on motor capabilities of PAM, and attenuation of emotionality elicited by NAM in transgenic males, were revealed. This favors future research of α5 GABAA receptor modulation in females as more promising.

Inducing Effects of Illegal Drugs to Improve Mental Health by Self-Regulation Therapy: A Pilot Study

Background: This study consists of a brief psychological intervention, which uses Self-Regulation Therapy (SRT, procedure based on suggestion and classical conditioning), to improve coping with stress and emotionality by reproducing the positive effects of illegal drugs: cannabis, cocaine, ecstasy. Method: 15 volunteers (8 males, 7 females), with a mean age of 24.6 (SD = 4.4), underwent intervention to improve their coping with stress and emotionality using SRT. They carried out pre- and post-intervention scores for 10 days and during a 4-week follow-up. The employed instruments were: BSS (Barber Suggestibility Scale); COPE (Coping Skills Inventory), and PANAS (Positive and Negative Affect Schedule). Results: SRT was superior to non-intervention for the 4 coping strategies (η² = 0.829, 0.453, 0.411 and 0.606) and for positive (η² = 0.371) and negative emotionality (η² = 0.419). An improvement in scores was evidenced in the follow-up scores compared to the pre-intervention measures. Conclusions: This study shows for the first time that it is possible to use illegal drugs, considered harmful to public health, to improve young people’s coping capacity and emotionality by reproducing their positive effects with SRT.

Early life stress alters emotional learning in a sex- and age-dependent manner with no impact on emotional behaviors

Neonatal adversity can impact neurodevelopmental trajectories. This study examined the long-term effects of maternal deprivation on day 9 (DEP9), associated or not to a stressor (saline injection [SAL]), on contextual fear conditioning (Experiment 1) and emotional behaviors (Experiment 2) in Wistar rats. Whole litters were either assigned to DEP9 or control groups, and on day 10, half of the litters in each group received an SAL or not (NSAL). DEP9-SAL male adolescents showed the longest freezing time and DEP9 adult males froze more than females. Females exhibited less anxiety-like behavior than males; DEP9-SAL females spent more time in the open arms and DEP9 males visited less the extremity of the open arm in the elevated plus maze. Early life stress increased conditioned and innate fear in males, but not in females, indicating a clear sexual dimorphism in the response to potentially threatening stimuli.

The effects of emotionality and lexical category on L2 word processing in different tasks: Evidence from late Chinese-English bilinguals

Although it has been well established that emotional content influences language comprehension, the effects of emotionality on L2 (second language: English) word processing require further clarification. Notably, most previous studies unsystematically mixed words of different lexical categories, although they often showed processing differences. Here, using the same set of tightly matched negative, positive, and neutral words across three lexical categories (i.e., nouns, verbs, adjectives), we examined the effects of emotionality and lexical category on L2 word processing by conducting three experiments. In these experiments, three groups of late Chinese-English bilinguals performed three tasks: the emotional Stroop task (Experiment 1), the lexical decision task (Experiment 2), and the emotional categorisation task (Experiment 3), respectively. Overall, our data suggested that emotionality and lexical category exerted no influence on L2 word processing in the emotional Stroop task, but acted interactively to influence it in the other two tasks. The results evidenced that the processing of L2 emotional words was sensitive to task type. Therefore, we conclude that future research on L2 word processing should fully consider the emotionality, lexical category, and task type.

Reduced vividness of emotional memories following reactivation in a second language

We investigated the effect of second language use on the experienced vividness and emotionality of negative autobiographical memories. Fifty native Swedish speakers with English as their second language were asked to recall a negative episodic memory from their past in their native language. Half the participants were then asked to reactivate the same memory in their first language while the other half were asked to reactivate it in their second language, and then rate their experienced vividness and emotionality a second time. Following this reactivation, experienced emotionality was reduced for both groups of participants, with a similar magnitude of reduction for both groups. Experienced vividness, however, was only reduced for the group who reactivated the memory in their second language. No difference in intrusion frequency was found between the groups at a one-week follow-up. The results provide increased insight into how a second language can affect the experienced emotionality and vividness of a negative autobiographical memory.

Emoji as Affective Symbols: Affective Judgments of Emoji, Emoticons, and Human Faces Varying in Emotional Content

An important function of emoji as communicative symbols is to convey emotional content from sender to receiver in computer-mediated communication, e. g., WhatsApp. However, compared with real faces, pictures or words, many emoji are ambiguous because they do not symbolize a discrete emotion or feeling state. Thus, their meaning relies on the context of the message in which they are embedded. Previous studies investigated affective judgments of pictures, faces, and words suggesting that these stimuli show a typical distribution along the big two emotion dimensions of valence and arousal. Also, emoji and emoticons have been investigated recently for their affective significance. The present study extends previous research by investigating affective ratings of emoji, emoticons and human faces and by direct comparison between them. In total, 60 stimuli have been rated by 83 participants (eight males, age: 18–49 years), using the non-verbal Self-Assessment Manikin Scales for valence and arousal. The emotionality of the stimuli was measured on a 9-point Likert scale. The results show significant main effects of the factors “stimulus category” and “discrete emotion” including emotionality, valence and arousal. Also, the interaction between these two main factors was significant. Emoji elicited highest arousal, whereas stimuli related to happiness were rated highest in valence across stimulus categories. Angry emoji were rated highest in emotionality. Also, the discrete emotion was best recognized in emoji, followed by human face stimuli and lastly emoticons.

Examining the Role of Microbiota in Emotional Behavior: Antibiotic Treatment Exacerbates Anxiety in High Anxiety-Prone Male Rats

Intestinal microbiota are essential for healthy gastrointestinal function and also broadly influence brain function and behavior, in part, through changes in immune function. Gastrointestinal disorders are highly comorbid with psychiatric disorders, although biological mechanisms linking these disorders are poorly understood. The present study utilized rats bred for distinct emotional behavior phenotypes to examine relationships between emotionality, the microbiome, and immune markers. Prior work showed that Low Novelty Responder (LR) rats exhibit high levels of anxiety- and depression-related behaviors as well as myriad neurobiological differences compared to High Novelty Responders (HRs). Here, we hypothesized that the divergent HR/LR phenotypes are accompanied by changes in fecal microbiome composition. We used next-generation sequencing to assess the HR/LR microbiomes and then treated adult HR/LR males with an antibiotic cocktail to test whether it altered behavior. Given known connections between the microbiome and immune system, we also analyzed circulating cytokines and metabolic factors to determine relationships between peripheral immune markers, gut microbiome components, and behavioral measures. There were no baseline HR/LR microbiome differences, and antibiotic treatment disrupted the microbiome in both HR and LR rats. Antibiotic treatment exacerbated aspects of HR/LR behavior, increasing LRs' already high levels of anxiety-like behavior while reducing passive stress coping in both strains. Our results highlight the importance of an individual's phenotype to their response to antibiotics, contributing to the understanding of the complex interplay between gut microbes, immune function, and an individual's emotional phenotype.

The Simon effect in bilingual language brokers: A role for emotion and proficiency

Aims and objectives/purpose/research questions

Language brokering (LB) is an informal translation experience where bilinguals serve as linguistic and cultural intermediaries for family members. LB may have long-term socio-emotional and cognitive outcomes, yet little is known about its effects on executive functions (EFs). This study examines how first language (L1) proficiency and negative emotions tied to language brokering experiences affect EF performance on a Simon task (ST).

Design/methodology/approach

Fifty-three Mexican American Spanish-English bilinguals with LB experience performed a ST, and reported their feelings towards LB for their mother.

Data and analysis

Mean reaction times (RTs) and accuracy rates for correct ST trials were analyzed using linear mixed effects modeling, with trial type, proficiency and negative emotions tied to LB experience as factors and their interactions as additional predictors.

Findings/conclusions

The L1 proficiency and negative emotions tied to brokering experiences have divergent, but combined effects on EF. Contrary to our hypotheses, low L1 proficiency predicted better performance and the smallest Simon effect was found for brokers with low L1 proficiency and low negative emotional brokering experiences. However, high L1 proficiency predicted better performance (smallest RTs) regardless of negative emotions tied to brokering experiences.

Originality

This study takes a different perspective on the examination of individual differences among bilinguals, in which we examine how negative emotions tied to brokering experiences coupled with L1 proficiency relates to EF performance.

Significance/implications

Our results provide support for the need to understand how individual differences in bilingual language experiences, such as L1 proficiency and negative emotions tied to LB, interact with performance on the ST.

Blood oxytocin levels are not associated with ADHD tendencies and emotionality in healthy adults

Oxytocin (OT) regulates social and emotional behaviour. Core symptoms of attention-deficit/hyperactivity disorder (ADHD) include social and emotional dysfunctions potentially associated with lower endogenous OT levels. A dimensional approach was employed to examine relationships between plasma OT levels, ADHD tendencies, and emotionality in a healthy adult sample. Moreover, we aimed at replication of results regarding ADHD tendencies and emotionality from our previous work. Subjects were N = 110 healthy Chinese males (M_age: 22.01 ± 2.02 years). Variables of interest were plasma OT levels, individual variations in ADHD tendencies assessed via the Adult ADHD Self-Report Scale Symptom Checklist (ASRS), and positive and negative emotionality assessed via primary emotional traits of the Affective Neuroscience Personality Scales (ANPS). Hypotheses were tested by means of (partial) Spearman and Pearson correlations. Plasma OT levels were neither related to ADHD tendencies, nor to primary emotional traits. ADHD tendencies were significantly related to higher negative emotionality (correlation coefficients: r= .35 to r = .47) and lower positive emotionality (correlation coefficients: r= -.42 to r = -.36). The absence of associations between plasma OT levels and ADHD tendencies, primary emotional traits, and emotionality might be explained by the lack of robust associations between peripheral and central OT levels. Results regarding ADHD tendencies and emotionality replicate previous findings, emphasizing that (sub-clinically) elevated ADHD tendencies associate with dysregulated emotionality. Future studies examining the role of endogenous OT in ADHD should explore the generalizability of the present findings to women and patients with ADHD.

Psychometric Properties and a Preliminary Validation Study of the Italian Brief Version of the Communication Styles Inventory (CSI-B/I)

People will typically develop a communication style that tends to be coherent with their own fundamental personality traits. The current debate on communication style acknowledges the construct of adaptive behavior as an appropriate area where to include both the strictly personal aspects and social learning and cultural assimilation, which translate into communicative style as a specific form of adaptation integrating the behavioral and personality perspectives. Due to the lack of instruments in the Italian psychometric scenario to assess communication styles, the present study included the translation and validation of the Italian short version of the Communication Styles Inventory (CSI-B/I). Methods. The CSI-B/I was administered to a sample of 1,044 participants, while the concurrent validity was tested through a second administration to 518 participants along with the MPP (Multidimensional Personality Profile). Results. Confirmatory factor analysis bore out a three-factor solution (including 18 items) with good indices of adaptation to data, e.g., χ2/df = 1.251, RMSEA = 0.027, RMSEA 90% CI = 0.008–0.040, GFI = 0.958, AGFI = 0.937, CFI = 0.983 and NFI = 0.922. The CSI-B/I allows to measure three main dimensions of the communication style: impression manipulativeness; emotionality; expressiveness. Internal consistency reliability and significant correlations with the MPP supported the concurrent validity of the tool. Conclusion. By virtue of its good psychometric properties, CSI-B/I represents an important addition to the assessment in multiple contexts: companies, institutions, staff selection, individual and group profile analysis, coaching, psychotherapy, counseling, career guidance.

The Value in Science-Art Partnerships for Science Education and Science Communication

Just a fraction of the scientific knowledge produced in laboratories reaches a lay audience. Most of our communication with the public gets lost in translation because of the difficulties that science communication poses to scientists. Among other obstacles, differential exposure to scientific and critical thinking, discrepancies with social narratives, and communication training based in the deficit model add on top of a practice established on avoiding emotionality. In this context, effective communication requires the use of emotions, which are crucial to establishing trust. This commentary provides a rationale for collaboration with graphic design and fine arts to use emotions in science communication and education. It starts by proposing the two-way engagement model as a replacement for the deficit model. Next, it offers a neuroscientific basis for the use of emotions in establishing trust. Finally, it finishes profiling the Convergence Initiative's efforts to establish bridges across disciplines and communicating science with the public through art.

Angry night birds: Emotionality, activity and sociability temperament in adolescent chronotypes

There is growing interest in personality profiles associated with morningness-eveningness to foster an understanding of the behaviors and mental states of chronotypes. This study aimed to analyze the domains of emotionality, activity and sociability (EAS) temperament in relation to morningness-eveningness in adolescents. A sample of 539 school pupils aged 13-19 years completed the EAS Temperament Survey, the Composite Scale of Morningness and the Munich Chronotype Questionnaire. Amongst the five EAS domains (emotionality-distress, emotionality-fearfulness, emotionality-anger, activity and sociability), greater emotionality-anger was related to eveningness, while greater emotionality-distress was related to lower social jet lag. The results suggest that evening chronotypes can be temperamentally inclined to anger. The possible mechanisms of this association are discussed.

The Effects of Binaural and Monoaural Beat Stimulation on Cognitive Functioning in Subjects with Different Levels of Emotionality

Today, binaural and monaural beats are offered over the Internet or by mental health institutes to improve wellbeing or cognitive functioning. This improvement is explained by the assumption that the brain adapts its brainwave frequency to the frequency of the auditory beat. The present study examined the effects of binaural and monaural beat stimulation on attention and working memory in high and low emotional participants. A group of 24 participants (16 females, 8 males) between 19 and 31 years old (M = 22.33, SD = 3.42) performed a Flanker task to measure attention and a Klingberg task to measure working memory while listening to white noise (WN), 40 Hz gamma binaural beat (BB) and 40 Hz gamma monaural beat (MB). Speed of performance on all three levels of difficulty of the Flanker attention task was faster under the BB and MB condition than under WN. No differences were found between BB and MB conditions. With respect to the quality of performance on the Flanker attention task and the Klingberg working memory task no significant differences under the WN, MB, and BB condition were found. Finally, as participants with low or high emotionality did not respond differently to BB and MB under any of the conditions, effects of BB and MB seem similar in high and low emotional participants. The present study supports the notion that faster attention processing may equally be attributed to the influence of BB and MB. Further research is recommended to gain more insight in the role of factors such as duration of stimulation of BB and MB, frequency range, most appropriate carrier tones, and the role of personality traits.

Humor Styles as New Resources in a Primary Preventive Perspective: Reducing Resistance to Change for Negotiation

Reducing resistance to change is fundamental to dealing with the rapid and continuous changes of the 21st century labor market. Personality traits have been widely studied in relation to resistance to change. However, personality is not completely suitable for primary prevention intervention, since it does not change over time. Instead, humor styles appear to be a promising preventive resource to facilitate the negotiation process by enabling individuals to cope with the current work environment. Using a sample of 149 university students, this study analyzed the relationship between personality traits, such as extraversion and emotionality, humor styles, and resistance to change. The mediation analysis highlighted that both affiliative and self-enhancing humor styles could promote integrative negotiations within organizations in relation to change, due to their negative relationships with resistance to change. Thus, implementing dedicated interventions to increase the usage of affiliative and self-enhancing humor styles could help in lowering the failure risk in negotiation processes, supporting changes.

Stereotypic Behavior in Sows Is Related to Emotionality Changes in the Offspring

Some effects of expressing stereotypic behavior have not yet been elucidated. During gestation, the environment has the potential to interfere with offspring development and to have prenatal or longer-term consequences. We tested the hypothesis that the occurrence of stereotypic behavior during gestation could affect the phenotype of the offspring. Twenty-eight pregnant sows were studied by comparing two groups differing in the amount of stereotypy shown. We analyzed emotionality in the offspring from sows showing high or low stereotypy frequency using the open field and novel object tests. In the open field test, piglets from sows with a high rate of stereotypies walked more in central sectors (p < 0.0001) and lateral sectors (p = 0.04) than piglets from sows with a low rate of stereotypies. In the novel object test, the offspring from low stereotypy sows vocalized more (p = 0.008). We demonstrate for the first time that the stereotypic behavior by the mother during gestation changes the phenotype of the offspring, in particular, their emotionality.

Irritability as a Transdiagnostic Vulnerability Trait:Current Issues and Future Directions

In recent years, irritability has received increasing attention among mental health professionals given its transdiagnostic associations with diverse forms of psychopathology. In contrast to other emotional states and traits, however, literature addressing associations between irritability and related temperament and personality constructs is limited. In addition, those who study irritability have diverse perspectives on its neurobiological substrates. In this comment, we situate irritability in the literatures on child temperament and adult personality, and describe a model in which irritability derives from low tonic dopamine (DA) levels and low phasic DA reactivity in subcortical neural structures implicated in appetitive responding. We note that different findings often emerge in neuroimaging studies when irritability is assessed in circumscribed diagnostic groups versus representative samples. We conclude with directions for future research, and propose that more authors use hierarchical Bayesian modeling, which captures functional dependencies between irritability and other dispositional traits (e.g., trait anxiety) that standard regression models are insensitive too. Treatment implications are also considered.

Targeting the Stress System During Gestation: Is Early Handling a Protective Strategy for the Offspring?

The perinatal window is a critical developmental time when abnormal gestational stimuli may alter the development of the stress system that, in turn, influences behavioral and physiological responses in the newborns. Individual differences in stress reactivity are also determined by variations in maternal care, resulting from environmental manipulations. Despite glucocorticoids are the primary programming factor for the offspring's stress response, therapeutic corticosteroids are commonly used during late gestation to prevent preterm negative outcomes, exposing the offspring to potentially aberrant stress reactivity later in life. Thus, in this study, we investigated the consequences of one daily s.c. injection of corticosterone (25 mg/kg), from gestational day (GD) 14-16, and its interaction with offspring early handling, consisting in a brief 15-min maternal separation until weaning, on: (i) maternal behavior; and (ii) behavioral reactivity, emotional state and depressive-like behavior in the adolescent offspring. Corticosterone plasma levels, under non-shock- and shock-induced conditions, were also assessed. Our results show that gestational exposure to corticosterone was associated with diminished maternal care, impaired behavioral reactivity, increased emotional state and depressive-like behavior in the offspring, associated with an aberrant corticosterone response. The early handling procedure, which resulted in increased maternal care, was able to counteract the detrimental effects induced by gestational corticosterone exposure both in the behavioral- and neurochemical parameters examined. These findings highlight the potentially detrimental consequences of targeting the stress system during pregnancy as a vulnerability factor for the occurrence of emotional and affective distress in the adolescent offspring. Maternal extra-care proves to be a protective strategy that confers resiliency and restores homeostasis.

Chronic Jet Lag Simulation Decreases Hippocampal Neurogenesis and Enhances Depressive Behaviors and Cognitive Deficits in Adult Male Rats

There is a long history that protracted periods of circadian disruption, such as through frequent transmeridian travel or rotating shift work, can have a significant impact on brain function and health. In addition, several studies have shown that chronic periods of circadian misalignment can be a significant risk factor for the development of depression and anxiety in some individuals with a history of psychiatric illness. In animal models, circadian disruption can be introduced through either phase advances or delays in the light-dark cycle. However, the impact of chronic phase shifts on affective behavior in rats has not been well-studied. In the present study, male rats were subjected to either weekly 6 h phase advances (e.g., traveling eastbound from New York to Paris) or 6 h phase delays (e.g., traveling westbound from New York to Hawaii) in their light/dark cycle for 8 weeks. The effect of chronic phase shifts was then examined on a range of emotional and cognitive behaviors. We found that rats exposed to frequent phase advances, which mirror conditions of chronic jet lag in humans, exhibited impairments in object recognition memory and showed signature symptoms of depression, including anhedonia, increased anxiety behavior, and higher levels of immobility in the forced swim test. In addition, rats housed on the phase advance schedule also had lower levels of hippocampal neurogenesis and immature neurons showed reduced dendritic complexity compared to controls. These behavioral and neurogenic changes were direction-specific and were not observed after frequent phase delays. Taken together, these findings support the view that circadian disruption through chronic jet lag exposure can suppress hippocampal neurogenesis, which can have a significant impact on memory and mood-related behaviors.

Development of a Scale of Positive Temperament in Indian Context

BACKGROUND

Available tests of temperament measure the traits of different categories (like reward dependence, emotionality) with a large number of items. These tests do not deal specifically with traits of positive temperament (emotionality), and most scales measure negative emotionality as a counterpart of positive emotionality. The current study reports the development of a new scale of positive temperament, with fewer items and applicable in the Indian context.

METHODS

Items were developed with help from available scales of positive temperament, which led to the selection of 36 items from six different constructs. The data were collected in two stages for exploratory and confirmatory factor analysis of the scale. Stage one and two consisted of 278 and 338 participants, respectively, in the age group of 18-80 years, from both the genders and different professions. Data was collected online through the Qualtrics survey website. The participants responded on a 5-point Likert scale from 0-4 indicating how often they behave in a particular way as asked by the item. The test was reconducted on a subsample of 98 participants after 4 weeks to measure test-retest reliability. Convergent validity was also established using strengths and difficulties questionnaire and neuroticism scale, and divergent validity was found with age.

RESULTS

Exploratory factor analysis revealed four factors: optimism, perseverance, self-contentment, and adaptability. Confirmatory factor analysis later revealed that the 4-factor model fits best with the data, having comparative fit index (CFI) of 0.96 and root mean square error of approximation (RMSEA) of 0.063. The internal consistency estimates of the four factors ranged from 0.72 to 0.91, indicating a stable structure of scales. The final scale is of 28 items, with seven items in each factor. The test-retest reliability coefficients ranged from 0.79-0.96. Two second-order factors were also identified.

CONCLUSIONS

The positive temperament inventory is a four-factor, 28-item validated inventory with a stable set of items, having specific applicability in measuring positive temperament and fewer items for ease of use in different situations. This is the first scale of its kind in the Indian context and holds a promising future in the area of personality and clinical research.

Negative Emotional Action Termination (NEAT): Support for a Cognitive Mechanism Underlying Negative Urgency in Nonsuicidal Self-Injury

Negative urgency, the self-reported tendency to act impulsively when distressed, increases risk for nonsuicidal self-injury (NSSI). NSSI is also associated with impaired negative emotional response inhibition (NERI), specifically negative emotional action termination (NEAT), a cognitive process theoretically related to negative urgency. We previously found that adults with NSSI history had difficulty inhibiting behavioral responses to affective images depicting negative content (but not positive or neutral images) in an Emotional Stop-Signal Task. We sought to replicate this finding, determine whether this deficit extends to negative emotional action suppression (NEAS; an earlier stage of NERI), and explore whether impairment in these two stages of emotional response inhibition helps explain the relationship between negative urgency and NSSI. Eighty-eight adults with NSSI history (n = 45) and healthy control participants (n = 43) without NSSI history or psychopathology completed a clinical interview, symptom inventories, an impulsivity questionnaire, and behavioral assays of early and late NERI (NEAS and NEAT, respectively). The NSSI group had worse NEAT than the control group in the Emotional Stop-Signal Task, but no group differences in NEAS were observed in an Emotional Go/No-go task. However, both early and late stages of NERI accounted for independent variance in negative urgency. We additionally found that NEAT explained variance in the association between negative urgency and NSSI. These results suggest that impulsive behavior in NSSI may involve specifically impaired inhibitory control over initiated negative emotional impulses. This deficit in late response inhibition to negative emotional stimuli might reflect a cognitive mechanism or pathway to elevated negative urgency among people who self-injure.

Reconceptualization of emotion regulation: strategy use, flexibility, and emotionality

BACKGROUND AND OBJECTIVES

Previous research has identified associations between emotion regulation strategy use patterns and emotional and behavioral functioning outcomes. The current study examined the construct of ER by integrating ER strategy use with flexibility to use strategies and overall level of experienced emotion to determine patterns of ER functioning.

DESIGN

Self-report data regarding strategy use, flexibility, and affect intensity was collected from undergraduate psychology students (N = 380).

METHODS

A latent profile analysis (LPA) was used to identify a profile structure of ER. Multivariate Analysis of Variance (MANOVA) was used to examine the effect of ER profile on the following outcomes: ER difficulties, internalizing problems, and externalizing behaviors.

RESULTS

The LPA supported a 3-profile and a 6-profile model. MANOVA results indicated that the 3-profile model and the 6-profile model predicted outcomes of ER difficulties and internalizing and externalizing behaviors.

CONCLUSIONS

The 3-profile model demonstrated greater separation of profiles than the 6-profile model, whereas the 6-profile model demonstrated more nuanced profiles than the 3-profile model. Overall, our results suggest that integrating strategy use, flexibility, and emotionality yields profiles of ER that can be used for better prediction of functioning than using strategy use alone.

Influence of Pre-Weaning Social Isolation on Post-Weaning Emotion Tendency and Mother-Infant Interactions in Infant Octodon Degus

Our previous research using Octodon degus (degus) revealed that preweaning social isolation negatively affected object exploratory behavior. However, it remains unknown how social isolation affects animal psychology and other behaviors. The present study examined the effects of neonatal social isolation on degu emotion and mother–infant interactions before and after weaning. Because degus have a complex social repertoire, we predicted that they would be sensitive to social isolation and show similarities with humans in their social interaction. Pups in the isolation group were separated from their family seven times for 30 min a day from 8 to 15 days post-birth. Pups in the nonisolation group were reared with their family. At 2, 3, 4, 5, and 6 weeks of age, pups underwent a zero-maze test to measure anxiety and a mother–infant interaction test to assess mother–infant attachment. Isolated pups showed more activity in the zero-maze test than nonisolated pups at 3 weeks of age. We found no significant effects of social isolation on mother–infant interactions. These results suggest that while neonatal social isolation might affect emotion during weaning, it does not influence mother–infant relationships.

Collective Narcissism and In-Group Satisfaction Are Associated With Different Emotional Profiles and Psychological Wellbeing

The social identity approach to wellbeing posits that social identifications provide psychological resources that contribute to individual wellbeing. Unless individuals identify with stigmatized groups or groups whose norms prescribe damaging behaviors, identifying with groups seems beneficial. This article explores the possibility that the different ways individuals approach the same social identity (labeled collective narcissism vs. in-group satisfaction) may be differentially associated with wellbeing. Results of four studies indicate that collective narcissism (a belief that the in-group's exceptionality is not sufficiently appreciated by others) vs. in-group satisfaction, (a belief that the in-group is of a high value), although positively correlated, are associated with different emotional profiles. In Study 1A (N = 570, in Poland) and Study 1B (N = 778, in the United States), collective narcissism was uniquely positively associated with negative emotionality, whereas in-group satisfaction was positively associated with positive emotionality and negatively associated with negative emotionality. In Study 2 (N = 569, in Poland), collective narcissism and in-group satisfaction had opposite unique links with social connectedness, gratitude and self-criticism. In Study 3 (N = 393, in Poland), collective narcissism, but not in-group satisfaction, was associated with sensory processing sensitivity, genetically determined hypersensitivity to negative stimuli. Collective narcissism was associated with life satisfaction only via its link to in-group satisfaction. Together these results suggest that dispositional negative emotionality may incline individuals toward collective narcissism. The positive overlap with in-group satisfaction may link collective narcissism to the benefits of social identification and wellbeing.

Emotional excitability and behaviour of horses in response to stroking various regions of the body

Touching the skin by gentle stroking is frequently used to reward horses. The objective of the study was to examine emotional excitability and behaviour of horses in response to stroking different regions of their bodies. The study included 15 adult warmbloods and 15 adult ponies, nine geldings and six mares within each type of horse. First, a novel-object test was conducted. For five successive days, one of five regions of the horse's body was stroked on each side for 5 min. Heart rate and heart rate variability were monitored at rest, during the test and stroking. Simultaneously, horse behaviour was assessed on a 1-5 scale. The data were analysed using analysis of variance GLM, Tukey's Honestly Significant Difference test and Spearman's correlation coefficient. When stroked, horses were more excited than when at rest. Differences in emotional excitability and behaviour while stroking various body regions depended on the type and sex of horses. Parameters studied indicated that both in warmbloods and ponies, stroking the head may be beneficial, whereas the trunk should be treated with caution. Stroking may have a more positive influence in horses of lower emotionality and highly estimated behaviour at rest and during the novel-object test.

Sweetener Intake by Rats Selectively Bred for Differential Saccharin Intake: Sucralose, Stevia, and Acesulfame Potassium

Behavioral responses to sweeteners have been used to study the evolution, mechanisms, and functions of taste. Occidental low and high saccharin consuming rats (respectively, LoS and HiS) have been selectively outbred on the basis of saccharin intake and are a valuable tool for studying variation among individuals in sweetener intake and its correlates. Relative to HiS rats, LoS rats consume smaller amounts of all nutritive and nonnutritive sweeteners tested to date, except aspartame. The lines also differ in intake of the commercial product Splenda; the roles of sucralose and saccharides in the difference are unclear. The present study extends prior work by examining intake of custom mixtures of sucralose, maltodextrin, and sugars and Splenda by LoS and HiS rats (Experiment 1A-1D), stevia and a constituent compound (rebaudioside A; Experiment 2A-2E), and acesulfame potassium tested at several concentrations or with 4 other sweeteners at one concentration each (Experiment 3A-3B). Results indicate that aversive side tastes limit intake of Splenda, stevia, and acesulfame potassium, more so among LoS rats than among HiS rats. In addition, regression analyses involving 5 sweeteners support the idea that both sweetness and bitterness are needed to account for intake of nonnutritive sweeteners, more so among LoS rats. These findings contribute to well developed and emerging literatures on sweetness and domain-general processes related to gustation.

Emotionality of Colors: An Implicit Link between Red and Dominance

The color red has been shown to alter emotions, physiology, psychology, and behavior. Research has suggested that these alterations could possibly be due to a link between red and perceived dominance. In this study we examined if the color red is implicitly associated to the concept of dominance. In addition, we similarly hypothesized that blue is implicitly linked to rest. A modified Stroop word evaluation task was used in which 30 participants (23.07 ± 4.42 years) were asked to classify words shown in either red, blue, or gray (control condition), as being either dominant- or rest-related. The responses were recorded and analyzed for latency time and accuracy. The results revealed a significant word type × color interaction effect for both latency times, F(2,56) = 5.09, p = 0.009, ηp2 = 0.15, and accuracy, F(1.614,45.193) = 8.57, p = 0.001, ηp2 = 0.23. On average participants showed significantly shorter latency times and made less errors when categorizing dominance words shown in red, compared to blue and gray. The measured effects show strong evidence for an implicit red-dominance association and a partial red-rest disassociation. It is discussed that this association can possibly affect emotionality, with the presentation of red eliciting a dominant emotional and behavioral response.

Pathways from Religion to Health: Mediation by Psychosocial and Lifestyle Mechanisms

Religiosity, often measured as attendance at religious services, is linked to better physical health and longevity though the mechanisms linking the two are debated. Potential explanations include: a healthier lifestyle, increased social support from congregational members, and/or more positive emotions. Thus far, these mechanisms have not been tested simultaneously in a single model though they likely operate synergistically. We test this model predicting all-cause mortality in Seventh-day Adventists, a denomination that explicitly promotes a healthy lifestyle. This allows the more explicit health behaviors linked to the religious doctrine (e.g., healthy diet) to be compared with other mechanisms not specific to religious doctrine (e.g., social support and positive emotions). Finally, this study examines both Church Activity (including worship attendance and church responsibilities) and Religious Engagement (coping, importance, and intrinsic beliefs). Religious Engagement is more is more inner-process focused (vs. activity-based) and less likely to be confounded with age and its associated functional status limitations, although it should be noted that age is controlled in the present study. The findings suggest that Religious Engagement and Church Activity operate through the mediators of health behavior, emotion, and social support to decrease mortality risk. All links between Religious Engagement and mortality are positive but indirect through positive Religious Support, Emotionality, and lifestyle mediators. However, Church Activity has a direct positive effect on mortality as well as indirect effects through, Religious Support, Emotionality, and lifestyle mediators (diet and exercise). The models were invariant by gender and for both Blacks and Whites.

Adolescent Siblings of Individuals With and Without Intellectual and Developmental Disabilities: Self-Reported Empathy and Feelings About Their Brothers and Sisters

Siblings of brothers or sisters with intellectual and developmental disabilities (IDD) are important but understudied family members. As many previous studies have relied on parent report of sibling outcomes, the use of sibling self-report is an important addition to the research. This study assessed the feelings of adolescent siblings toward their brothers or sisters with and without IDD, as well as broader aspects of sibling empathy. Data were collected via a national, online survey from 97 parent-sibling pairs. Siblings of individuals with IDD reported higher levels of anxiety toward the target child than did siblings of typically developing individuals. Sibling feelings toward the target child were related to both parental and target child factors, but only among families of individuals with IDD.

Neural Correlates of Task-Irrelevant First and Second Language Emotion Words - Evidence from the Emotional Face-Word Stroop Task

Emotionally valenced words have thus far not been empirically examined in a bilingual population with the emotional face-word Stroop paradigm. Chinese-English bilinguals were asked to identify the facial expressions of emotion with their first (L1) or second (L2) language task-irrelevant emotion words superimposed on the face pictures. We attempted to examine how the emotional content of words modulated behavioral performance and cerebral functioning in the bilinguals' two languages. The results indicated that there were significant congruency effects for both L1 and L2 emotion words, and that identifiable differences in the magnitude of the Stroop effect between the two languages were also observed, suggesting L1 is more capable of activating the emotional response to word stimuli. For event-related potentials data, an N350-550 effect was observed only in the L1 task with greater negativity for incongruent than congruent trials. The size of the N350-550 effect differed across languages, whereas no identifiable language distinction was observed in the effect of conflict slow potential (conflict SP). Finally, more pronounced negative amplitude at 230-330 ms was observed in L1 than in L2, but only for incongruent trials. This negativity, likened to an orthographic decoding N250, may reflect the extent of attention to emotion word processing at word-form level, while the N350-550 reflects a complicated set of processes in the conflict processing. Overall, the face-word congruency effect has reflected identifiable language distinction at 230-330 and 350-550 ms, which provides supporting evidence for the theoretical proposals assuming attenuated emotionality of L2 processing.

Effects of Gene × Attachment Interaction on Adolescents' Emotion Regulation and Aggressive Hostile Behavior Towards their Mothers during a Computer Game

Adolescence is a time of increased emotionality and major changes in emotion regulation often elicited in autonomy-relevant situations. Both genetic as well as social factors may lead to inter-individual differences in emotional processes in adolescence. We investigated whether both 5-HTTLPR and attachment security influence adolescents’ observed emotionality, emotional dysregulation, and their aggressive hostile autonomy while interacting with their mothers. Eighty-eight adolescents at age 12 were observed in interaction with their mothers during a standardized, emotion eliciting computer game task. They were genotyped for the 5-HTTLPR, a repeat polymorphism in the promoter region of the serotonin transporter gene. Concurrent attachment quality was assessed by the Late Childhood Attachment Interview (LCAI). Results revealed a significant gene × attachment effect showing that ss/sl carriers of 5-HTTLPR show increased emotional dysregulation and aggressive hostile autonomy towards their mothers. The results of the study suggest that secure attachment in adolescence moderates the genetically based higher tendency for emotional dysregulation and aggressive reactions to restrictions of autonomy during emotional social interactions with their mothers.

Independent effects of early-life experience and trait aggression on cardiovascular function

Early-life experience (ELE) can significantly affect life-long health and disease, including cardiovascular function. Specific dimensions of emotionality also modify risk of disease, and aggressive traits along with social inhibition have been established as independent vulnerability factors for the progression of cardiovascular disease. Yet, the biological mechanisms mediating these associations remain poorly understood. The present study utilized the inherently stress-susceptible and socially inhibited Wistar-Kyoto rats to determine the potential influences of ELE and trait aggression (TA) on cardiovascular parameters throughout the lifespan. Pups were exposed to maternal separation (MS), consisting of daily 3-h separations of the entire litter from postnatal day (P)1 to P14. The rats were weaned at P21, and as adults were instrumented for chronic radiotelemetry recordings of blood pressure and heart rate (HR). Adult aggressive behavior was assessed using the resident-intruder test, which demonstrated that TA was independent of MS exposure. MS-exposed animals (irrespective of TA) had significantly lower resting HR accompanied by increases in HR variability. No effects of MS on resting blood pressure were detected. In contrast, TA correlated with increased resting mean, systolic, and diastolic arterial pressures but had no effect on HR. TA rats (relative to nonaggressive animals) also manifested increased wall-to-lumen ratio in the thoracic aorta, increased sensitivity to phenylephrine-induced vascular contractility, and increased norepinephrine content in the heart. Together these data suggest that ELE and TA are independent factors that impact baseline cardiovascular function.

Conditional Reduction of Adult Born Doublecortin-Positive Neurons Reversibly Impairs Selective Behaviors

Adult neurogenesis occurs in the adult mammalian subventricular zone (SVZ) along the walls of the lateral ventricles and the subgranular zone (SGZ) of the hippocampal dentate gyrus. While a burgeoning body of research implicates adult neurogenesis in olfactory bulb (OB)- and hippocampal-related behaviors, the precise function continues to elude. To further assess the behavioral importance of adult neurogenesis, we herein generated a novel inducible transgenic mouse model of adult neurogenesis reduction where mice with CreER^T2 under doublecortin (DCX) promoter control were crossed with mice where diphtheria toxin A (DTA) was driven by the Rosa26 promoter. Activation of DTA, through the administration of tamoxifen (TAM), results in a specific reduction of DCX+ immature neurons in both the hippocampal dentate gyrus and OB. We show that the decrease of DCX+ cells causes impaired social discrimination ability in both young adult (from 3 months) and middle aged (from 10 months) mice. Furthermore, these animals showed an age-independent altered coping behavior in the Forced Swim Test without clear changes in anxiety-related behavior. Notably, these behavior changes were reversible on repopulating the neurogenic zones with DCX+ cells on cessation of the TAM treatment, demonstrating the specificity of this effect. Overall, these results support the notion that adult neurogenesis plays a role in social memory and in stress coping but not necessarily in anxiety-related behavior.

The scent of stress: environmental challenge in the peripartum environment of mice affects emotional behaviours of the adult offspring in a sex-specific manner

Early adverse experiences are known to influence the risk of developing psychiatric disorders later. To shed further light on the development of laboratory mice, we systematically examined the influence of a prenatal or postnatal olfactory stressor, namely unfamiliar male mouse faeces, presented to pregnant or nursing mouse dams. Maternal and offspring behaviours were then examined. Maternal behaviours relative to controls revealed changes in nest building by the pregnant dams exposed to the unfamiliar faeces. There were no differences among groups on pup retrieval or exploration by the dams. Behavioural phenotyping of male and female offspring as adults included measures of exploration, anxiety, social and depressive-like behaviours. Additionally, serum corticosterone was assessed as a marker of physiological stress response. Group differences were dependent on the sex of the adult offspring. Males raised by dams that were stressed during pregnancy presented elevated emotionality as indicated by increased numbers of faecal boluses in the open field paradigm. Consistent with the effects of prenatal stress on the males only the prenatally stressed females had higher body weights than their respective controls. Indeed, males in both experimental groups had higher circulating corticosterone levels. By contrast, female offspring of dams exposed to the olfactory stressor after parturition were more anxious in the O-maze as indicated by increased latencies in entering the exposed areas of the maze. These findings emphasize the necessity for researchers to consider the pre- and postnatal environments, even of mice with almost identical genetic backgrounds, in designing experiments and interpreting their data.