Induced resistance to herbivory and the intelligent plant

Plant induced responses to environmental stressors are increasingly studied in a behavioral ecology context. This is particularly true for plant induced responses to herbivory that mediate direct and indirect defenses, and tolerance. These seemingly adaptive alterations of plant defense phenotypes in the context of other environmental conditions have led to the discussion of such responses as intelligent behavior. Here we consider the concept of plant intelligence and some of its predictions for chemical information transfer in plant interaction with other organisms. Within this framework, the flow, perception, integration, and storage of environmental information are considered tunable dials that allow plants to respond adaptively to attacking herbivores while integrating past experiences and environmental cues that are predictive of future conditions. The predictive value of environmental information and the costs of acting on false information are important drivers of the evolution of plant responses to herbivory. We identify integrative priming of defense responses as a mechanism that allows plants to mitigate potential costs associated with acting on false information. The priming mechanisms provide short- and long-term memory that facilitates the integration of environmental cues without imposing significant costs. Finally, we discuss the ecological and evolutionary prediction of the plant intelligence hypothesis.

Understanding life satisfaction among the original inhabitants in the suburbanized areas at the outskirts of a major city: a qualitative study

PURPOSE

Suburbanization has become a major characteristic of urban development in sub-Saharan Africa, and shifting from agricultural-based areas modus vivendi to urban lifestyles affects subjective wellbeing of the original settlers. While there is lack of evidence in the literature of wellbeing in these areas, this study examines life satisfaction of these populations by means of individuals' own appreciation and evaluation of quality of life.

METHODS

The study uses interpretionist and reflexive approaches, and analyses 76 interviews conducted through snowball sampling in two major suburbanized areas. Thematic analysis was used to analyse the data.

RESULTS

Generally, the findings show that respondents are satisfied with material living conditions due to improvement of availability of economic opportunities, roads and other transport services, social and community support. However, income inequality and urban poverty result in the inability to afford modern and high-quality urban living conditions, which creates feelings of vulnerability while limiting social relationships.

CONCLUSIONS

There is a need to strenghten existing frameworks to fully respond to urban life requirements that relate to transport, education, hygiene, and sanitation services. It is also important to develop support systems that mitigate issues of gender discrimination, human rights, household decision-making, fashion, and cultural norms.

Machine learning applied to the prediction of relapse, hospitalization, and suicide in bipolar disorder using neuroimaging and clinical data: A systematic review

BACKGROUND

Bipolar disorder (BD) is associated with increased morbidity/mortality. Adverse outcome prediction might help with the management of patients with BD.

METHODS

We systematically reviewed the performance of machine learning (ML) studies in predicting adverse outcomes (relapse or recurrence, hospital admission, and suicide-related events) in patients with BD. Demographic, clinical, and neuroimaging-related poor outcome predictors were also reviewed. Three databases (PubMed, Scopus, and Web of Science) were explored from inception to July 2023.

RESULTS

Eighteen studies, accounting for >30,000 patients, were included. Support vector machine, decision trees, random forest, and logistic regression were the most frequently used ML algorithms. ML models' area under the receiver operating characteristic (ROC) curve (AUC), sensitivity, and specificity ranged from 0.71 to 0.98, 72.7-92.8 %, and 59.0-95.2 % for relapse/recurrence prediction (4 studies (3 on relapses and 1 on recurrences). The corresponding values were 0.78-0.88, 21.4-100 %, and 77.0-99.7 % for hospital admissions (3 studies, 21,266 patients), and 0.71-0.99, 44.4-97.9 %, and 38.9-95.0 % for suicide-related events (10 studies, 5558 patients). Also, one study addressed a combination of the interest outcomes. Adverse outcome predictors included early onset BD, BD type I, comorbid psychiatric or substance use disorder, circadian rhythm disruption, hospitalization characteristics, and neuroimaging parameters, including increased dynamic amplitude of low-frequency fluctuation, decreased frontolimbic functional connectivity and aberrant dynamic functional connectivity in corticostriatal circuitry.

CONCLUSIONS

ML models can predict adverse outcomes of BD with relatively acceptable performance measures. Future studies with larger samples and nested cross-validation validation should be conducted to reach more reliable results.

Compulsive rituals in Obsessive-Compulsive Disorder - A qualitative exploration of thoughts, feelings and behavioral patterns

BACKGROUND AND OBJECTIVES

Rituals are common among healthy individuals and across cultures and often serve adaptive purposes. In individuals with obsessive-compulsive disorder (OCD), rituals become compulsive, time-consuming and distressing, and may lead to functional impairment. Previous research has examined the functions and characteristics of compulsive rituals, but there is paucity of in-depth, first-person reports about this topic.

METHOD

We used a qualitative approach to explore thoughts, feelings, and behavioral patterns that characterize OCD rituals. Ten individuals with OCD participated in a semi-structured interview that focused on their most prominent compulsive ritual. The interviews were subjected to a thematic analysis.

RESULTS

Eight themes emerged from the analysis and were organized in two main categories: Micro Level perspective, comprising triggers, attention, emotional changes, and stopping criteria; and Macro Level perspective, comprising feelings and perceptions, change over time, motives, and inhibitors. The findings shed light on the role of fixed rules and feelings of "completeness" in OCD rituals, the nature of emotional and attentional characteristics during rituals performance, and the evolution of compulsive rituals over time.

LIMITATIONS

This study used a qualitative approach based on a small number of participants, which limits the generalizability of the findings.

CONCLUSION

Our results, if replicated, may have clinical implications. The reported patterns of anxiety reduction during ritual performance may contribute to the fine-tuning of CBT for OCD. The findings concerning the nature of attention during ritual performance and the development of rituals over time may be important for understanding the mechanisms that maintain compulsive rituals.

Can I still eat this? Using implicit and explicit measures to explore consumer behavior toward food products with date labels

This study investigates implicit and explicit attitudes toward products before and beyond the best-before date (BBD) using an Implicit Association Test and an online questionnaire. Moreover, we test whether consumer perception of and behavior toward products beyond the BBD can be manipulated using a priming task. We use a three-group between-subjects design where respondents had to recall either a frugal, a wasteful, or an unrelated behavior. Results show that consumers have negative implicit associations with products beyond the BBD. Reduced health and safety perceptions, consumers' strategies to determine edibility, and general risk perception of products beyond the BBD predict consumption of these products. While recalling a frugal behavior does not have significant effects, recalling a wasteful behavior prior to evaluating products beyond the BBD leads to a decrease in the perceived safety and healthfulness of these products.

Fatigued or bored? Investigating the effect of different types of mental fatigue on 3 km running performance

Mental fatigue has been highly cited as having a negative impact on endurance performance. Few, however, have investigated whether different types of mental fatigue, namely active and passive fatigue, might affect endurance performance differently. This study used a repeated-measures design where 11 participants completed a 3 km run after three 32-min conditions: an actively fatiguing task (Task-load Dual-back; TloadDback); a passively fatiguing task (Mackworth Clock); and a control task (Documentary). Subjective ratings and performance on a second task (Flanker task) were taken before and after the 32-min tasks, while ratings of perceived effort, motivation and workload were taken during the 3 km run. Results showed that both fatigue conditions were mentally fatiguing, with the TloadDback rated as more demanding and the Mackworth Clock more boring and less motivating. Performance on subsequent tasks showed different effects: the TloadDback condition had the slowest responses on the post-test Flanker task, while the Mackworth Clock condition had the slowest completion time on the 3 km run, though this difference in completion times was non-significant. These results suggest that different cognitive tasks lead to different types of mental fatigue, which can lead to different outcomes on subsequent cognitive tasks but non-significant differences on subsequent physical tasks. This study highlights that to understand the influence of mental fatigue on physical performance, it is important to understand the cognitive tasks used and how different cognitive and physical tasks interact. Future work should examine whether performance outcomes in other areas commonly affected by mental fatigue, like technical and tactical sporting skills, are affected differently by active and passive fatigue.

Are ethical explanations explanatory? Meta-ethical beliefs shape judgments about explanations for social change

Why were women given the right to vote? "Because it is morally wrong to deny women the right to vote." This explanation does not seem to fit the typical pattern for explaining an event: rather than citing a cause, it appeals to an ethical claim. Do people judge ethical claims to be genuinely explanatory? And if so, why? In Studies 1 (N = 220) and 2 (N = 293), we find that many participants accept ethical explanations for social change and that this is predicted by their meta-ethical beliefs in moral progress and moral principles, suggesting that these participants treat morality as a directional feature of the world, somewhat akin to a causal force. In Studies 3 (N = 513) and 4 (N = 328), we find that participants recognize this relationship between ethical explanations and meta-ethical commitments, using the former to make inferences about individuals' beliefs in moral progress and moral principles. Together these studies demonstrate that our beliefs about the nature of morality shape our judgments of explanations and that explanations shape our inferences about others' moral commitments.

Thinking of food: The mental representation of healthy foods as unprepared

We find that people implicitly and explicitly represent healthy foods they categorize as healthy in their purest, least prepared forms but represent foods they categorize as unhealthy in their most prepared forms (e.g., a veggie patty is represented as frozen while a beef burger is represented in a bun with melted cheese and ready to eat). We find this effect across several studies using both image and word sorting measures in explicit tasks and implicit association tasks. The effect results from the perception of health and taste as two conflicting goals. Preparation (e.g., cooking, adding toppings) makes food more delicious, which creates categorization ambiguity. Hence, healthy food is thought of as unprepared. Indeed, individual differences in perceived health-taste goal conflict moderate the effect. Critically, the representation of healthy foods matters for food decisions. In an experiment that manipulated the descriptive language on a restaurant menu, emphasizing the preparation of foods increased participants' preference for healthy foods (with no improvement for unhealthy foods).

Can mindfulness-based training impact explicit and implicit attitudes and sustainable nutrition behavior? A focus on vegetarianism

OBJECTIVES

The aim of this study was to investigate the impact of a mindfulness intervention (IG) compared to an inactive control group (CG) on explicit and implicit attitudes toward vegetarian and meat-based foods, nutrition behavior measures, trait mindfulness and wellbeing.

METHODS

In the IG (N = 66), we implemented a mindfulness-based intervention consisting of eight weekly group sessions online, along with an additional half-day session held on campus. The CG (N = 71) received no intervention or training. We employed a pre-/post-intervention design involving questionnaires (trait mindfulness, wellbeing, sustainable nutrition behavior scale), an online supermarket scenario, as well as an explicit rating task and an implicit association task using pictures of vegetarian and meat-based foods. Additionally, a voluntary follow-up testing was conducted two months after the final group session.

RESULTS

No intervention effects were observed on explicit and implicit attitudes, wellbeing, or nutrition behavior measures. However, there was an increase in trait mindfulness within the IG. Exploratory cross-sectional findings indicated that trait mindfulness facets such as "Acting with Awareness" and "Outer Awareness", along with explicit attitudes, were significant predictors of self-reported sustainable consumption behavior. Additionally, sex and explicit attitudes were identified as significant predictors of vegetarian consumption behavior in the online supermarket task.

CONCLUSION

Our findings could not substantiate previous claims regarding the potential causal effects of mindfulness practice on sustainable consumption behavior, specifically in the realm of sustainable and vegetarian nutrition, as well as subjective wellbeing. Future studies may benefit from implementing longer-term mindfulness-based interventions and considering other potential decisive factors, such as connectedness to nature and others. Integrating training elements focusing on these specific variables into the intervention could be valuable.

Embodied cognitive restructuring: The impact of posture and movement on changing dysfunctional attitudes

BACKGROUND AND OBJECTIVES

Previous theoretical and empirical work has pointed to the important role of the body in emotion generation and emotion regulation. In the present study, we wanted to investigate if the performance of certain body postures and movement could facilitate cognitive restructuring of dysfunctional cognitive attitudes more effectively than traditional, verbal-only methods.

METHODS

In total, 130 participants were randomized to one of two groups. One group was subjected to cognitive restructuring (i.e., restructure only group; CR-only), verbally exploring a dysfunctional attitude from a curious, strong, and courageous perspective. The other group received the same verbal instructions but in addition to this, was asked to perform different bodily exercises (i.e., motor-enhanced restructuring group; M-CR) supposed to enhance experience of the different perspectives from which cognitive restructuring was employed.

RESULTS

Results confirmed the primary hypothesis, showing that the M-CR-group showed a larger decline in belief in dysfunctional attitudes compared with the CR-only group (F = 4.2, p = 0.041, d = 0.25). No differences on secondary outcomes were observed between the two groups.

LIMITATIONS

Future research should explore the effects of motor-enhanced CR both more long-term (e.g., durability over weeks) and in clinical samples (e.g., anxiety and depression).

CONCLUSION

Should the findings be replicated in clinical samples, it is encouraging that simple bodily exercises can enhance the effect of one of the most central skills of cognitive therapy.

Arousal and the modulation of sensory experience: evidence from food-related emotions

Across sensory systems, several stimulus collative characteristics, including intensity, novelty, complexity and perceived dangerousness, are known to elicit high levels of physiological and psychological arousal. It has become apparent that food rejections by both children and adults are frequently linked to such arousal-inducing characteristics. This paper examines how arousal and arousability are important elements in responding to stimuli generally, but specifically to foods, ultimately influencing food preferences and choices. It is clear that responses to sensory properties are subject not just to variations in perceptual sensitivity due to genetics or experience-as in the case of widely rejected qualities such as bitterness or pungency-but also to the arousal potential of those stimuli. Moreover, this is linked to various enduring aspects of personality, suggesting that the impact of arousal on food choices is merely one aspect of a more general sensory sensitivity. The impact of diet on various health outcomes underlines the importance of understanding the relationship of arousal to food choices. This article is part of the theme issue 'Sensing and feeling: an integrative approach to sensory processing and emotional experience'.

The role of environmental sensitivity in the experience and processing of emotions: implications for well-being

Several theories suggest that people differ significantly in their environmental sensitivity, defined as the capacity to perceive and process information about the environment. More sensitive people, who make up between 25% and 30% of the population, are not only more negatively affected by adverse experiences but also benefit disproportionately from positive ones, in line with differential susceptibility theory. Heightened emotional reactivity has been identified as one of the key markers of sensitivity. However, the current understanding of the relationship between sensitivity and the experience and processing of emotions remains limited. In the current paper we propose a new conceptual framework for the multiple ways in which environmental sensitivity may impact on different aspects of the experience and processing of emotions. This includes heightened perception of emotions, increased emotional reactivity, as well as the important role of emotion regulation for the well-being of highly sensitive people. In addition, we also consider rearing experiences in shaping sensitivity and emotion regulation. The reviewed empirical studies largely support the conceptual model but more research is needed to explore the dynamics between sensitivity and emotions further. Finally, we discuss several implications for well-being before making a case for the inclusion of individual differences in environmental sensitivity in affective science. This article is part of the theme issue 'Sensing and feeling: an integrative approach to sensory processing and emotional experience'.

Cultural Dimensions Moderate the Association between Loneliness and Mental Health during Adolescence and Younger Adulthood: A Systematic Review and Meta-Analysis

Cultural factors, such as country or continent, influence the relationship between loneliness and mental health. However, less is known about how cultural dimensions moderate this relationship during adolescence and younger adulthood, even if these dimensions manifest as country or continent differences. This study aims to examine the potential influence of Hofstede's cultural dimensions on this relationship using a three-level meta-analysis approach. A total of 292 studies with 291,946 participants aged 10 to 24 were included in this study. The results indicate that cultural dimensions, such as individualism vs. collectivism, indulgence vs. restraint, power distance, and long-term vs. short-term orientation, moderated the associations between loneliness and social anxiety, stress, Internet overuse, and negative affect. The association between loneliness and mental health was not moderated by cultural dimensions, such as masculinity and uncertainty avoidance. These findings suggest that culture's influence on the association between loneliness and mental health is based on a domain-specific mechanism.

Loneliness and its cross-sectional associations with health, health behaviours, and perceptions in Finnish patients with overweight or obesity taking part in the Healthy Weight Coaching

OBJECTIVE

To investigate cross-sectional associations between loneliness and health, health behaviours, and perceptions in Finnish individuals with overweight or obesity (BMI ≥25 kg/m2).

METHODS

We used baseline data from patients participating, in 2016-2022, in a real-life digital 12-month weight management program known as Healthy Weight Coaching. Patients completed several questionnaires such as those related to loneliness, healthcare resource utilization, physical activity, and life satisfaction. BMI was computed based on self-reported weight and height. In addition to investigating individual health variables, we studied the association between loneliness and factor-analysis-derived health and wellbeing clusters.

RESULTS

Data were available from 2000 individuals (16.7% men, median age 48 years, median BMI 39.2 kg/m2). Altogether, 11.6%, 42.4%, and 46.0% reported feeling lonely, somewhat lonely, and not lonely, respectively. Feeling lonely was associated with higher BMI, greater healthcare resource utilization, lower life satisfaction, burdensomeness of life, more negative perceptions related to obesity and to the upcoming coaching, lower daytime energy, and reduced 20-min brisk walk results, a measure of functional capacity. Of the five factor-analysis-derived clusters, loneliness was adversely associated with "Life satisfaction" [lonely, 0.337 (0.270-0.421), p < 0.001; somewhat lonely, 0.545 (0.475-0.625), p < 0.001]. Moreover, loneliness associated with "Negative perceptions of obesity/daytime fatigue" [lonely, 4.627 (3.391-6.314), p < 0.001; somewhat lonely 2.021 (1.694-2.412), p < 0.001], and "Obesity/low physical activity" [lonely, 1.474 (1.105-1.966), p = 0.008; somewhat lonely, 1.220 (1.019-1.460), p = 0.030].

CONCLUSIONS

Loneliness had several untoward associations with health, health behaviours, and perceptions. Further research should explore the intricate relationship between obesity, loneliness, and physical and psychosocial health.

TRIAL REGISTRATION

The trial is registered at clinicaltrials.cov (Clinical Trials Identifier NCT04019249).

Minds of Monsters: Scary Imbalances Between Cognition and Emotion

Four studies investigate a fear of imbalanced minds hypothesis that threatening agents perceived to be relatively mismatched in capacities for cognition (e.g., self-control and reasoning) and emotion (e.g., sensations and emotions) will be rated as scarier and more dangerous by observers. In ratings of fictional monsters (e.g., zombies and vampires), agents seen as more imbalanced between capacities for cognition and emotion (high cognition-low emotion or low cognition-high emotion) were rated as scarier compared to those with equally matched levels of cognition and emotion (Studies 1 and 2). Similar effects were observed using ratings of scary animals (e.g., tigers, sharks; Studies 2 and 3), and infected humans (Study 4). Moreover, these effects are explained through diminished perceived control/predictability over the target agent. These findings highlight the role of balance between cognition and emotion in appraisal of threatening agents, in part because those agents are seen as more chaotic and uncontrollable.

The Association Between Neuroticism and Problematic Social Networking Sites Use: The Role of Fear of Missing out and Self-Control

Problematic use of social networking sites (SNS) has a negative impact on mental health. It has been found that people who score high on neuroticism are especially vulnerable towards engaging with SNS in a problematic way but it is not clear which psychological mechanisms explain this relationship. We addressed this issue by examining the mediating role of fear of missing out and self-control in the relationship between neuroticism and problematic SNS use. For this purpose, we conducted a cross-sectional study (n = 151, 69.5% female, Mage = 26.23, SD = 7.52) and tested for parallel mediation using structural equation modelling. Neuroticism was found to be predictive of increased levels of problematic SNS use. Moreover, neuroticism was associated with both increased levels of fear of missing out and decreased levels of self-control. However, only fear of missing out was found to robustly mediate the relationship between neuroticism and problematic use of SNS. These findings suggest that fear of missing out could be an intervention target to prevent people scoring high on neuroticism from engaging in problematic SNS use.

Putting Oneself Ahead of the Group: The Liability of Narcissistic Leadership

Integrating insights from interdependence theory with the narcissistic admiration and rivalry concept, we propose that a pivotal obstacle for narcissistic leaders is their inability to sustain benevolent perceptions over time. As people strive to interpret social behavior in terms of self- or other-interest, the narcissistic tendency of prioritizing self-interests over the collective may become apparent and eventually taint their reputation as a leader. We examined how interpersonal motive perceptions-based on attributions of self- and other-interest-would clarify the leadership paradox of narcissism. We tracked 472 participants in 119 teams across four time-points. Narcissistic rivalry (but not admiration) corresponded to increasingly negative leader effectiveness ratings. The extent to which individuals were perceived as self-maximizing and lacking concern for other interests was tightly connected to declines in leader effectiveness across time. Altogether, these results offer insight into how perceived interpersonal motives may explain the downfall of narcissistic leadership.

Making meaning of one's own life story in words and images: A narrative case report of personal recovery from personality disorder through the interventions "An Empowering Story" and art therapy

Understanding and processing life experiences are essential in the treatment of personality disorders to promote personal recovery and psychological wellbeing. In this qualitative case report, drafted in co-creation between the client, clinical psychologist, and art therapist, individual treatment consisted of two psychotherapeutic interventions, "An Empowering Story" and life-story-focused art therapy, in 12 parallel sessions for 24 weeks. Hilda, 68 years of age, had been diagnosed with an unspecified personality disorder and various traits of borderline personality disorder. She experienced emotional exhaustion following long-term mental health problems rooted in a traumatic early childhood. This affected her ability to manage her emotions and social relations, resulting in the sense that her life had no meaning. Hilda was invited to reconstruct her life experiences, divided into the past, turning point, and present/future, in a written and a painted life story. This allowed for the integration of traumatic as well as positive memories, enhanced self-compassion, and meaning making. She developed self-reflection and integration of internal conflicts leading to a better emotional balance and self-understanding. Art therapy emphasizes bottom-up regulatory processes, while narrative psychology supports top-down regulatory processes. The combined approach effectively integrated bottom-up, experiential, sensory experiences with top-down, cognitive emotion-regulation processes. The results suggest that psychotherapeutic interventions involving a multi-pronged, complementary, and thus more holistic approach can support personal recovery in personality disorders.

Power motives, personality correlates, and leadership outcomes: A person-centered approach

OBJECTIVE

We investigated how these motivations combined within individuals to form unique profiles, and how these different profiles relate to personality traits and team behaviors.

BACKGROUND

Dominance, prestige, and leadership motives each play a key role in shaping social success or failure in gaining social rank and influence.

METHOD

We used latent profile analysis across two samples (engineering student project teams, Nstudent = 1088; working adults, Nworker = 466) to identify profile configurations and how such profiles related to important outcomes.

RESULTS

We identified qualitatively distinct profiles: ultra-dominance profile (prominent dominance motive with high prestige and leadership motives); prestigious leadership profile (moderately high prestige and leadership motives, low dominance motive); and weak social power motive profile (low on all three motives). Individuals with the prestigious leadership profile were more likely to emerge as leaders, compared to those with a weak social power motive profile. People with an ultra-dominance profile scored higher on narcissism and tended to perceive themselves as leaders, despite not being deemed more leader-like by teammates.

CONCLUSION

Using a person-centered approach allowed us to identify three power motive profiles across independent samples and generate insights into how these profiles manifest different social behaviors and outcomes.

A matter of personality and point of view: How the interplay of reinforcement sensitivity and general attitudes towards pain impacts the responsivity to acute pain

BACKGROUND

The relatively stable individual differences reflected in Grey's revised reinforcement sensitivity theory (rRST), with foundations in neurophysiology and learning theory, appear particularly applicable to the study of pain. However, remarkably little research has been conducted in this area. In acute pain, activation of the behavioural approach system (BAS), the behavioural inhibition system (BIS) and the fight, flight, freezing system might depend on an individual's evaluation of pain. It was thus hypothesised that higher-order interactions of rRST traits and pain attitudes affect pain responsiveness.

METHODS

To investigate relationships between rRST traits and pain attitudes and to identify patterns between clusters of participants, we conducted a study in which N = 275 healthy participants filled in Reuter and Montag's rRST-Q and the General Attitudes Towards Pain Inventory (GATPI). Experimental (pressure, electrical, thermal) and self-report data of pain responsiveness were collected in a subsample (N = 113).

RESULTS

We found significant correlations between rRST-Q and GATPI subscales of up to r = 0.34. Two clusters were identified, significantly differing in rRST-Q and GATPI scores. Pain avoiders, characterized by high BIS, flight, freezing and negative pain attitudes, were found to be significantly more pain sensitive than pain approachers, characterized by high BAS, fight and positive pain attitudes. Moderate effects (d = 0.56 to d = 0.70) were demonstrated in subjective and objective measures and across pain modalities.

CONCLUSIONS

The present study expands the scientific knowledge on factors influencing pain responsiveness. Future research is needed to confirm implications for chronic pain prevention and therapy, particularly concerning pain avoiders.

SIGNIFICANCE

We have identified two clusters of participants, pain avoiders and pain approachers, that not only present differential patterns of revised reinforcement theory traits and general attitudes towards pain but also differ in their pain responsiveness. Pain avoiders appeared more pain sensitive compared to pain approachers, both in objective and subjective measurements, with implications for the improvement of chronic pain prevention and therapy.

The Authentic Self Is the Self-Enhancing Self: A Self-Enhancement Framework of Authenticity

Authenticity refers to behaving in a manner that aligns with one's true self. The true self, though, is positive. From a self-enhancement standpoint, people exaggerate their strengths and overlook their shortcomings, forming positively-distorted views of themselves. We propose a self-enhancement framework of authenticity, advocating a reciprocal relation between the two constructs. Trait self-enhancement was associated with higher trait authenticity (Study 1), and day-to-day fluctuations in self-enhancement predicted corresponding variations in state authenticity (Study 2). Furthermore, manipulating self-enhancement elevated state authenticity (Studies 3-4), which was associated with meaning in life (Study 4), and manipulating authenticity augmented self-enhancement, which was associated with meaning in life and thriving (Study 5). The authentic self is largely the self-enhancing self.

Power to Detect What? Considerations for Planning and Evaluating Sample Size

ACADEMIC ABSTRACT

In the wake of the replication crisis, social and personality psychologists have increased attention to power analysis and the adequacy of sample sizes. In this article, we analyze current controversies in this area, including choosing effect sizes, why and whether power analyses should be conducted on already-collected data, how to mitigate the negative effects of sample size criteria on specific kinds of research, and which power criterion to use. For novel research questions, we advocate that researchers base sample sizes on effects that are likely to be cost-effective for other people to implement (in applied settings) or to study (in basic research settings), given the limitations of interest-based minimums or field-wide effect sizes. We discuss two alternatives to power analysis, precision analysis and sequential analysis, and end with recommendations for improving the practices of researchers, reviewers, and journal editors in social-personality psychology.

PUBLIC ABSTRACT

Recently, social-personality psychology has been criticized for basing some of its conclusions on studies with low numbers of participants. As a result, power analysis, a mathematical way to ensure that a study has enough participants to reliably "detect" a given size of psychological effect, has become popular. This article describes power analysis and discusses some controversies about it, including how researchers should derive assumptions about effect size, and how the requirements of power analysis can be applied without harming research on hard-to-reach and marginalized communities. For novel research questions, we advocate that researchers base sample sizes on effects that are likely to be cost-effective for other people to implement (in applied settings) or to study (in basic research settings). We discuss two alternatives to power analysis, precision analysis and sequential analysis, and end with recommendations for improving the practices of researchers, reviewers, and journal editors in social-personality psychology.

Perfectionism, self-esteem, and affective symptoms in anorexia nervosa subtypes: A network analysis of French inpatients

OBJECTIVE

Previous studies have highlighted the relevance of perfectionism, self-esteem, and anxio-depressive symptoms in anorexia nervosa (AN). However, the relationships between these factors and cardinal eating disorders (ED) symptoms remain unclear, particularly in AN subtypes. This study aimed to examine their interconnections using network analysis.

METHOD

The sample included n = 338 inpatients with AN who completed the Eating Disorder Examination Questionnaire, Frost Multidimensional Perfectionism Scale, Rosenberg Self-Esteem Scale, and Hospital Anxiety and Depression Scale. Using network analysis, we estimated three networks: full sample, AN-restrictive (AN-R) and AN-binge/purging (AN-BP) subtypes. We estimated central and bridge symptoms using expected influence and conducted an exploratory network comparison test to compare AN subtypes.

RESULTS

Overvaluation of Weight and Shape, Concern over Mistakes, and Personal Standards were consistently central in all networks. The most central bridge symptoms across all networks were Concern over Mistakes and Self-Esteem. Concern over Mistakes bridged perfectionism and ED symptoms, while Self-Esteem was highly connected to all symptom clusters. Anxiety was significantly more central in the AN-R network compared to the AN-BP network.

CONCLUSIONS

The present study contributes to a growing body of network studies suggesting that nodes related to perfectionism are just as central as cardinal ED symptoms, indicating the relevance of perfectionism in ED pathology. The high bridge centrality of self-esteem suggests that it may be an important link between perfectionism, mood, and ED symptoms. Future research should investigate the efficacy of targeting multiple psychological factors in the treatment of AN, as well as their potential transdiagnostic relevance.

The expression of empathy in human's closest relatives, bonobos and chimpanzees: current and future directions

Empathy is a complex, multi-dimensional capacity that facilitates the sharing and understanding of others' emotions. As our closest living relatives, bonobos (Pan paniscus) and chimpanzees (P. troglodytes) provide an opportunity to explore the origins of hominin social cognition, including empathy. Despite certain assumptions that bonobos and chimpanzees may differ empathically, these species appear to overlap considerably in certain socio-emotional responses related to empathy. However, few studies have systematically tested for species variation in Pan empathic or socio-emotional tendencies. To address this, we synthesise the growing literature on Pan empathy to inform our understanding of the selection pressures that may underlie the evolution of hominin empathy, and its expression in our last common ancestor. As bonobos and chimpanzees show overlaps in their expression of complex socio-emotional phenomena such as empathy, we propose that group comparisons may be as or more meaningful than species comparisons when it comes to understanding the evolutionary pressures for such behaviour. Furthermore, key differences, such as how humans and Pan communicate, appear to distinguish how we experience empathy compared to our closest living relatives.

Parental reflective functioning in mothers and fathers of preschoolers: Associations with adult attachment and parenting behavior

Parental reflective functioning (PRF) is considered a key parental competence. Since most research on PRF has focused on infancy or the first years of life, there is a gap in our understanding of PRF among parents of older children. Therefore, we investigated PRF in mothers and fathers with preschool-aged children, examining associations between PRF, parent's romantic attachment, and observed parenting behavior. The sample comprised 50 mothers, 40 fathers, and their 5-year-old children. PRF was assessed using the parental reflective functioning questionnaire (PRFQ), parental romantic attachment was assessed using the experiences in close relationships scale-revised (ECR-R), and parenting behavior was assessed during a parent-child free-play interaction with the coding interactive behavior (CIB) coding system. Results showed that mothers scored higher on the interest and curiosity scale than fathers, indicating that mothers show a more active interest and curiosity in their child's mental states. Further, higher levels of attachment anxiety in fathers were associated with higher levels of pre-mentalizing modes. In mothers, higher levels of attachment avoidance were associated with lower levels of interest and curiosity. Finally, and unexpectedly, higher levels of interest and curiosity in mothers were associated with less sensitivity during free play. In summary, the study found meaningful associations between mothers' and fathers' romantic attachment and their PRF indicating a spill-over of their attachment strategies into their relationship with their child. Further, the study results suggest that very high levels of interest and curiosity in mothers reflect hypermentalizing.

Psychological change before and after religious conversion and deconversion

OBJECTIVE

Theory and anecdotal evidence suggest that people undergo psychological changes before and after religious conversion and deconversion. Yet, existing research provided inconclusive evidence. Here, we examined psychological change before, during, and after institutional conversion and deconversion in a large-scale longitudinal study.

METHOD

We used 11-wave longitudinal data from a nationally representative sample of Dutch adults (N ~ 20,000) to assess changes in religious beliefs and practices, personality traits, and well-being before, during, and after conversion to and deconversion from Christianity.

RESULTS

Converts (N = 181) increased in service attendance and prayer, but not in their belief in God, as they approached conversion. Deconverts (N = 450) declined in religious beliefs and practices before, during, and after deconversion. In terms of personality, converts displayed small, unexpected declines in emotional stability, extraversion, and agreeableness at time of conversion. Deconverts declined in agreeableness, conscientiousness, and openness at time of deconversion. Neither group showed changes in their well-being.

CONCLUSION

The present findings suggest that psychological changes during religious conversion and deconversion are generally small and mostly manifest as changes in people's religious beliefs and practices. Findings are discussed in the context of person-religion fit, meaning-making, and sociocultural motive perspectives on religious change.

A registered report survey of open research practices in psychology departments in the UK and Ireland

Open research practices seek to enhance the transparency and reproducibility of research. While there is evidence of increased uptake in these practices, such as study preregistration and open data, facilitated by new infrastructure and policies, little research has assessed general uptake of such practices across psychology university researchers. The current study estimates psychologists' level of engagement in open research practices across universities in the United Kingdom and Ireland, while also assessing possible explanatory factors that may impact their engagement. Data were collected from 602 psychology researchers in the United Kingdom and Ireland on the extent to which they have implemented various practices (e.g., use of preprints, preregistration, open data, open materials). Here we present the summarized descriptive results, as well as considering differences between various categories of researcher (e.g., career stage, subdiscipline, methodology), and examining the relationship between researcher's practices and their self-reported capability, opportunity, and motivation (COM-B) to engage in open research practices. Results show that while there is considerable variability in engagement of open research practices, differences across career stage and subdiscipline of psychology are small by comparison. We observed consistent differences according to respondent's research methodology and based on the presence of institutional support for open research. COM-B dimensions were collectively significant predictors of engagement in open research, with automatic motivation emerging as a consistently strong predictor. We discuss these findings, outline some of the challenges experienced in this study, and offer suggestions and recommendations for future research. Estimating the prevalence of responsible research practices is important to assess sustained behaviour change in research reform, tailor educational training initiatives, and to understand potential factors that might impact engagement.

Malevolent Monitoring: Dark Triad Traits, Cyber Dating Abuse, and the Instrumental Role of Self-Control

Cyber dating abuse (CDA) concerns the use of digital technology to control, monitor, and hurt one's intimate partner. CDA can have profound detrimental outcomes, such as mental health problems. As such, it is important to identify intrapersonal factors that may explain these behaviors. Previous research suggests that one such factor is the personality cluster of Dark Triad traits (DTT), comprising Machiavellianism, narcissism, and psychopathy. Additionally, DTT and CDA perpetration have both been linked to poor self-control ability, but these relationships have not yet been tested together in one model. As such, the present study examines if individuals' poor self-control ability mediates the relationship between the DTT and CDA perpetration. To test these associations, we conducted a survey study among a representative sample of Belgian adults (n = 1,144; Mage = 47.66 years; 51.3% female). Findings from correlation analyses revealed that all three DTT were individually associated with CDA perpetration, such that higher scores on these traits corresponded with more CDA perpetration. Additionally, pathway analyses from structural equation modeling revealed that individuals' poor self-control ability fully explained the relationship between Machiavellianism and narcissism and CDA perpetration, and partially explained the relationship between psychopathy and CDA perpetration. As our findings suggest that self-control plays an instrumental role in explaining why individuals control and monitor their partner via digital technology, prevention and intervention efforts should seek ways to improve individuals' self-control ability in situations that may trigger such harmful interpersonal behaviors, particularly among individuals who exhibit Dark Triad personality traits.

Validation of the Revised Multicultural Ideology Scale (MCI-r) in the UK

As worldwide migration continues to grow, valid and reliable instruments are needed to assess the psychological processes that influence the successful management of intercultural relations in different sociopolitical contexts. In this study, we test whether the original Multicultural Ideology Scale (MCI) required a revision to remain 'fit for purpose' in the current culturally plural context of the UK (MCI-r). Specifically, six subscales are proposed to underlie the construct of a multicultural ideology: Cultural Maintenance, Equity/Inclusion, Social interaction, Essentialistic Boundaries, Extent of Differences, and Consequences of Diversity. With data from 300 UK nationals, we tested the psychometric properties of the MCI-r using various confirmatory factor analysis techniques to estimate the scale's factor structure followed by convergent and discriminant validity tests. The results indicated that a 4-factor solution (Cultural Maintenance, Equity/Inclusion, Social interaction, and Consequences of Diversity) fitted the data best. All four subscales demonstrated adequate internal consistency as well as convergent and discriminant validity. All four subscales were also negatively correlated with a right-wing political orientation, whilst especially Social Interaction and Consequences of Diversity were positively associated with intergroup contact frequency across domains (work, family and friends and/or acquaintances). Finally, UK participants with personal migratory experiences reported a stronger belief in positive consequences of multiculturalism and more support for Social Interactions between members of different ethnic groups. Overall, findings provide first insights into the applicability of the MCI-r as a reliable and valid tool for the assessment of multiculturalism within the present UK context.

A reciprocal perspective on the differential associations between personality traits and multiple indicators of academic achievement

OBJECTIVE

This study aims to explore the reciprocal associations between personality traits (conscientiousness and openness to experience) and academic achievement in adolescents, using the Personality Achievement Saturation Hypothesis (PASH).

BACKGROUND

Personality traits, especially conscientiousness, and openness, have been identified as strong predictors of academic achievement. The PASH provides a framework for understanding these relationships but has mainly been studied from a unidirectional perspective. This study extends the PASH to examine reciprocal associations and how they vary with different achievement indicators.

METHODS

Using large-scale panel data (N = 6482) of secondary school students in Germany, we applied cross-lagged panel models and latent change score models to examine the differential reciprocal associations between personality traits (conscientiousness/openness) and academic achievement (school grades/achievement test scores) in language and math over two years from grades 7 to 9.

RESULTS

In line with the PASH, initial levels of conscientiousness were more strongly associated with school grades than with achievement test scores over two years. Simultaneously, prior school grades were more strongly associated with conscientiousness over two years. However, initial levels of openness did not show differential associations with either school grades or achievement test scores over two years. Similarly, prior school grades and achievement test scores were also not differentially associated with openness over two years.

CONCLUSIONS

Our findings introduce an innovative lens through which we observe how the PASH can be leveraged to explain the differential reciprocal associations between conscientiousness and academic achievement. Further research is needed to examine if PASH could be similarly extended to disentangle the associations between openness and academic achievement.

When meaning in life protects against fear of death: The moderating role of self-alienation

OBJECTIVE

A sense of meaning in life (MIL) is thought to help protect people against experiencing explicit anxiety about death. However, the experience of meaning is complex and subjective and may relate to death anxiety in nuanced ways. We examine how self-alienation-a feeling of not knowing/being disconnected from one's self-might moderate the relationship between MIL and death anxiety.

METHOD

Across five studies, we tested the hypothesis that MIL would negatively predict death anxiety more strongly for people relatively low in self-alienation. These studies were similar in design and included exploratory, confirmatory, and pre-registered tests.

RESULTS

A meta-regression across our five studies (N = 2001) provided clear evidence that MIL was most strongly associated with lower death anxiety at low self-alienation. We also observed that MIL was positively associated with death anxiety at high self-alienation. These effects were consistent in direction but inconsistent in strength.

CONCLUSIONS

We interpreted these results as evidence that MIL is existentially protective when experienced in combination with a relatively strong, clear, and connected sense of self. In contrast, MIL may be existentially problematic when people feel relatively unaware and disconnected from themselves. These findings align with aspects of terror management theory and highlight the potentially complex ways that MIL might relate to death anxiety.

Application of the integrated threat theory to conservation law enforcement

Interactions between law enforcement agents in conservation (e.g., rangers) and illegal resource users (e.g., illegal hunters) can be violent and sometimes fatal, which negatively affects conservation efforts and people's well-being. Models from social psychology, such as integrated threat theory (ITT) (intergroup interactions shape intergroup emotions, prejudices and perceived threats leading to hostile attitudes or behaviors between groups), are useful in addressing such interactions. Conservation approaches relying mainly on law enforcement have never been investigated using this framework. Using a structured questionnaire, we collected data from 282 rangers in protected and unprotected areas (n = 50) in northern Iran. We applied Bayesian structural equation modeling in an assessment of rangers' affective attitudes (i.e., emotions or feelings that shape attitudes toward a person or object) toward illegal hunters in an ITT framework. Rangers' positive perceptions of illegal hunters were negatively associated with intergroup anxiety (emotional response to fear) and negative stereotypes about a hunter's personality, which mediated the relationship between negative contact and affective attitudes. This suggests that negative contact, such as verbal abuse, may lead rangers to perceive illegal hunters as arrogant or cruel, which likely forms a basis for perceived threats. Rangers' positive contact with illegal hunters, such as playing or working together, likely lowered their perceived realistic threats (i.e., fear of property damage). Perceived realistic threats of rangers were positively associated with negative contacts (e.g., physical harm). The associations we identified suggest that relationships based on positive interactions between rangers and illegal hunters can reduce fear and prejudice. Thus, we suggest that rangers and hunters be provided with safe spaces to have positive interactions, which may help lower tension and develop cooperative conservation mechanisms.

Neural correlates of the revised reinforcement sensitivity theory: A cross-sectional structural neuroimaging study in middle-aged adults

The revised reinforcement sensitivity theory (RST) proposes that neurobiological systems control behavior: the fight-flight-freeze (FFFS) for avoidance of threat; behavioral approach/activation (BAS) for approach to rewards; and behavioral inhibition (BIS) for conflict resolution when avoidance and approach are possible. Neuroimaging studies have confirmed some theoretical associations between brain structures and the BAS and BIS; however, little representative population data are available for the FFFS. We investigated the neural correlates of the revised RST in a sample of 404 middle-aged adults (Mage = 47.18 (SD = 1.38); 54.5% female). Participants underwent structural magnetic resonance imaging and completed health questionnaires and the BIS/BAS/FFFS scales. We used multiple regression analyses to investigate the association between scale scores and volumes of a priori theoretically linked regions of interest while controlling for sex, age, intracranial volume, and cardio-metabolic variables; and conducted exploratory analyses on cortical thickness. The BIS was negatively associated with hippocampus laterality. At standard significance levels, the fear component of the FFFS was positively associated with anterior cingulate cortex; the BAS was positively associated with bilateral caudate; and the BIS was positively associated with posterior cingulate cortex volume. Furthermore, these neurobiological systems showed distinct patterns of association with cortical thickness though future work is needed. Our results showed that the neurobiological systems of the revised RST characterized in rodents can also be identified in the human brain.

Dual Pandemics: Race-Related COVID Stress and Mental Health Outcomes in Black Individuals

Black individuals have been disproportionately affected by the COVID-19 pandemic, likely due in part to historically rooted stressors that lie at the intersection of the COVID-19 pandemic and racism. We used secondary data from The Association of Black Psychologists' multi-state needs assessment of 2480 Black adults to examine the link between race-related COVID stress (RRCS) and mental health outcomes. We also examined the moderating roles of everyday discrimination, cultural mistrust, Black activism, Black identity, and spirituality/religiosity in these associations. T-tests revealed that several demographic and cultural factors are associated with RRCS endorsement. A series of regression analyses showed that endorsement of RRCS is associated with higher psychological distress and lower well-being, above and beyond several sociodemographic characteristics. While traditional cultural protective factors did not buffer against the effects of RRCS on mental health, cultural mistrust strengthened the positive association between RRCS and psychological distress; nonetheless, the association of cultural mistrusts with psychological distress was only seen in those who endorsed RRCS. We provide recommendations for policymakers, clinicians, and researchers to consider the impact of RRCS when addressing Black mental health and well-being in the age of COVID-19.

Perceiving multiple truths: Does dialectical thinking harmonize colourblind and multicultural ideals?

Multicultural and colourblind approaches to managing diversity are often conceptualized to be antagonistic. However, in principle, both have underlying motives for social justice, making it important to understand how they may be psychologically reconciled. In the present research, we examined dialectical thinking as an individual characteristic or condition under which people may endorse them in a conciliatory way. Across five studies (three pre-registered; N = 1899), using well-established materials that have measured and experimentally manipulated dialectical thinking, we found that individual differences in dialectical thinking were a replicable factor that moderated the relationship between colourblind and multicultural ideals. By contrast, situational priming of dialectical thinking did not reliably impact this relationship. Therefore, people with a greater propensity to view issues from multiple perspectives and to reconcile seemingly contradictory information appear more likely to take a harmonized approach to endorsing colourblind and multicultural ideals. Theoretical and practical implications are discussed.

Self-Other Balance in Context: A Quiet Ego May Be Meaningful and Adaptive in Latinx/Hispanic Cultures and Work Settings

Quiet ego is a relatively novel, increasingly studied, multi-dimensional concept characterized by a compassionate, interdependent worldview and an adaptive balance between self-interest and concern for others. Quiet ego has been associated with a range of characteristics that can promote relationship quality, responding effectively in the face of challenges, and greater well-being. However, it is currently unknown to what extent quiet ego translates across cultures and settings. The present research leverages cultural and organizational theories to evaluate the conceptual and structural validity of quiet ego for Latinx/Hispanic individuals in the U.S. and to examine relationships among quiet ego, work supervisor relationship quality, and goals in the workplace. Employed college student participants (n = 831; nLatinx/Hispanic = 305) completed an online survey, and collected data were subjected to confirmatory factor analysis and path analysis. Findings confirmed the overall structural model of quiet ego with four primary dimensions (perspective taking, inclusive identity, detached awareness, and growth-mindedness) and indicated that this structure did not differ between Latinx/Hispanic and non-Latinx/Hispanic subsamples. Further, results cohered with the proposed model suggesting that quiet ego might facilitate relationship quality with a workplace supervisor, which, in turn could foster balanced, intrinsically motivating perceptions that one's work goals benefit both oneself and others (mutual gain motivation). The study suggests that quiet ego may be a construct with meaning and utility in Latinx/Hispanic populations and in employment settings. However, further research is needed, and specific suggestions for future study are discussed.

Personality and burnout complaints: The mediating role of proactive burnout prevention behaviors at work

The aim of this study is to gain insight into how and why certain personality traits are related to experiencing burnout complaints. Drawing on insights from a stimulus-organism-response (SOR) model of personality and affect and conservation of resources (COR) theory, we specifically focus on the role of five proactive behaviors to prevent burnout (PBPBs) at work. Two research questions are addressed: (1) How are the HEXACO personality traits related to burnout complaints, and (2) to what extent do the PBPBs aimed at increasing resources act as mediators between the engagement dimensions of personality and burnout complaints. We set up a two-wave survey examining HEXACO personality, PBPBs at work, and burnout complaints in a sample of 172 employees. For our analyses we relied on multiple regression analyses and structural equation modeling. Our analyses revealed that employees high on Extraversion and Conscientiousness and low on Emotionality are less inclined to experience burnout complaints. For the trait of Conscientiousness, this could be partly explained because conscientious employees demonstrate more proactive behavior aimed at maintaining or increasing job control. Our research contributes to the burnout and personality literature as we offer insight into why specific personality dimensions are related to burnout complaints. Specific proactive behaviors aimed at increasing job resources appeared to play a small, yet relevant role in this respect, specifically for Conscientiousness. By studying the relationship between personality and behavior in association with burnout complaints, this study adds to our understanding of personalized preventive actions in the work context that can reduce burnout complaints.

The personality of violent Jihadists: Examining violent and nonviolent defense of Muslims

OBJECTIVE

Although violent extremism is often attributed to clinical (dysfunctional) dispositions, it is also possible that violent Jihadists might be clinically "normal" but bear certain personality signatures. This alternative view has yet to be tested.

METHOD

In six studies, employing hard-to-reach Muslim samples, including one study of former Mujahideen, we investigated the relationship between basic personality traits and violent extremism. We further used a known group paradigm to validate the personality signatures of violent extremism, comparing a sample of former Mujahideen with another sample from Afghanistan.

RESULTS

These studies and an internal meta-analysis revealed that Lower Openness to Experience, lower Emotionality, and lower Altruism were associated with more violent intentions to support Muslims. Higher Altruism was associated with higher levels of nonviolent intention to support Muslims. Supporting the validity of the nonviolent intention measure, similar associations were found in Study 3 with overt behavioral support of Muslims (donations). More important, compared to the nonMujahideen, the Mujahideen sample scored lower on average on, for instance, Openness, indicating that these results go beyond self-reported, findings.

CONCLUSION

We demonstrated that personality predicts violent and nonviolent defense of Muslims among four general populations of Muslims living in the West and in Asia (including the Middle East), and a sample of Mujahideen in Afghanistan.

Insulin resistance potentiates the effect of remnant cholesterol on cardiovascular mortality in individuals without diabetes

BACKGROUND AND AIMS

Remnant cholesterol (RC) and insulin resistance (IR) have been independently associated with cardiovascular risk. Here, we evaluated the role of IR and RC on cardiovascular disease (CVD) mortality.

METHODS

We conducted an analysis of 16,113 individuals ≥20 years without diabetes from the National Health and Nutrition Examination Survey (NHANES-III/IV). RC levels were calculated using total cholesterol, non-HDL-c, and LDL-c; IR was defined as HOMA2-IR≥2.5 and CVD mortality as a composite of cardiovascular and cerebrovascular mortality. Multiple linear regression was used to assess the relationship between HOMA2-IR and RC and Cox regression models to assess their joint role in CVD mortality. Causally ordered mediation models were used to explore the mediating role of IR in RC-associated CVD mortality.

RESULTS

We identified an association between higher HOMA2-IR and higher RC levels. The effect of IR on CVD mortality was predominant (HR 1.32, 95%CI 1.18-1.48) and decreased at older ages (HR 0.934, 95%CI 0.918-0.959) compared to RC (HR 0.983, 95%CI 0.952-1.014). Higher risk of CVD mortality was observed in individuals with IR but normal RC (HR 1.37, 95%CI 1.25-1.50) and subjects with IR and high RC (HR 1.24, 95%CI 1.13-1.37), but not in subjects without IR but high RC. In mediation models, HOMA2-IR accounted for 78.2% (95%CI 28.11-98.89) of the effect of RC levels on CVD mortality.

CONCLUSIONS

Our findings suggest that RC potentiates the risk of CVD mortality through its effect on whole-body insulin sensitivity, particularly among younger individuals.

Discrimination and Perceived Cultural Mismatch Increase Status-Based Identity Uncertainty

Periods of social mobility, such as attending college, can challenge one's status-based identity, leading to uncertainty around one's status in society. Status uncertainty is associated with poorer well-being and academic outcomes. Little is known, however, about what experiences lead to status uncertainty. The current longitudinal study investigated discrimination experiences and cultural mismatch as predictors of status uncertainty. We propose that discrimination indirectly predicts increased status uncertainty by increasing perceived cultural mismatch with the university. Participants were Latinx college students, all of whom were low-income and/or first generation to college. Discrimination experiences were measured at the end of participants' first year. Cultural mismatch and status uncertainty were measured at the end of Year 2. Status uncertainty was measured again at the end of Year 3. Results indicated that students who experienced more frequent discrimination felt more cultural mismatch 1 year later, and, in turn, reported increased status uncertainty over the following year.

The Gap Between Us: Income Inequality Reduces Social Affiliation in Dyadic Interactions

In this investigation, we tested the hypothesis that increased income inequality between individuals will reduce social affiliation within dyadic interactions. In three experiments, we examined the effects of income inequality on key indices of affiliation using semi-structured interactions. In the first two experiments, a participant and confederate were randomly assigned to a low- or high-power role and compensated mildly or extremely unequally. In Experiment 3, inequality and inequity were orthogonally manipulated to determine whether inequality's social consequences are moderated by the fairness of the income distribution. We demonstrated that greater inequality produced more negative emotional responses, reduced desire for closeness, and harsher evaluations of one's partner, regardless of one's power role and the equitability of the income distribution. We also obtained evidence that greater inequality reduces behavioral warmth, although this effect was less consistent. Our results begin to unpack the psychological processes through which income inequality worsens societal well-being.

Smile dynamics: A comparative study of Fijians and NZ Europeans

BACKGROUND

The Fijian 'Bula Smile' is often described as the world's friendliest; however, its description remains anecdotal.

OBJECTIVE

This study aimed to describe and compare the dynamics of Fijians' smiles with those of New Zealand Europeans.

METHODS

An observational study was conducted on two ethnic groups, Fijians (FJ; N = 23) and New Zealand Europeans (NZ; N = 23), age- and gender-matched. All participants were asked to watch amusing videos, and their reactions were video recorded. The videos were analysed by software to assess the frequency, duration, intensity and genuineness of smiling episodes. Based on the Facial Action Coding System, Action Unit 6 (AU6-cheek raiser), Action Unit 12 (AU12-lip corner puller) and Action Unit 25 (AU25-lips apart) were assessed. Data were analysed by generalised linear models after adjusting for personality traits.

RESULTS

Fijians smiled longer than New Zealand Europeans (+19.9%; p = .027). Mean intensity of AU6 (+1.0; 95%CIs = 0.6-1.5; p < .001), AU12 (+0.5; 95%CIs = 0.1-0.9; p = .008) and AU25 (+22.3%; 95%CIs = 7.3%-37.3%; p = .005) were significantly higher in FJ group than the NZ group.

CONCLUSION

Smiling features of Fijians and New Zealanders showed objective differences, the most distinctive being a higher activation of the Duchenne's marker (AU6) in the Fijian group, which is regarded as a sign of smile genuineness.

Personality, self-knowledge, and meat reduction intentions

OBJECTIVE

Meat consumption has a host of serious negative consequences for nonhuman animals, underprivileged humans, and the natural environment. Several interventions have been developed to encourage meat reduction but to relatively limited effect. There is also a range of established predictors of meat consumption, but much less is known about the factors that predict intentions to reduce meat consumption. The goal of this study was to determine the roles of personality and self-knowledge in meat reduction intentions.

METHOD

In this set of three preregistered studies, we tested brief interventions to encourage meat reduction intentions and examined personality predictors of intentions to reduce meat consumption.

RESULTS

We found no evidence that brief interventions with or without a self-knowledge component had a meaningful effect on changing meat reduction intentions. However, we found robust evidence for relatively small associations between intending to eat less meat and high Openness to Experience, high Emotionality, and perceiving meat reduction as moral behaviors.

CONCLUSION

Individual differences may be a more influential predictor of meat reduction intentions than brief interventions. Implications for promoting meat reduction are discussed.

The happy personality revisited: Re-examining associations between Big Five personality traits and subjective well-being using meta-analytic structural equation modeling

OBJECTIVE/BACKGROUND

Using meta-analytic structural equation modeling (MASEM), we examined the link between Big Five personality traits and subjective well-being (SWB), operationalized as three separate components and as a latent factor indicated by life satisfaction (LS), positive affect (PA), and negative affect (NA). PA and NA were assessed based on frequency of a broad range of affective experiences, rather than intensity of high arousal affective experiences, thus excluding studies using the Positive and Negative Affect Schedule.

METHOD

35 samples were included, encompassing 22,135 participants from 14 countries, in which all eight variables were assessed.

RESULTS

Correlations among personality traits were moderate, on average, and the latent SWB factor had strong loadings from all three components. Personality traits together explained substantial variance in LS, PA, and NA, and in the latent SWB factor, with unique predictive effects on the latent factor from each personality trait except openness. Associations between personality traits and SWB components were fully accounted for by a latent SWB factor, with one exception: A specific association was found between neuroticism and unique variance in NA.

CONCLUSIONS

The present findings provide new insights concerning the notion of a 'happy personality' in showing that Big Five personality traits have unique associations with an underlying sense of SWB.

Narcissistic personality disorder in the ICD-11: Severity and trait profiles of grandiosity and vulnerability

Modern diagnostic and classification frameworks such as the ICD-11 and DSM-5-AMPD have adopted a dimensional approach to diagnosing personality disorder using a dual "severity" and "trait" model. As narcissistic personality has historically struggled to be adequately captured in dominant diagnostic systems, this study investigated the utility of the new ICD-11 framework in capturing diverse narcissistic expressions. Participants were mental health clinicians (N = 180, 67% female, age = 38.9), who completed ratings of ICD-11 personality severity, trait domains and a clinical reflection for two hypothetical case vignettes reflecting either prototypical "grandiose" or "vulnerable" narcissism. The majority of clinicians (82%) endorsed a diagnosis of personality disorder for both grandiose and vulnerable vignettes. Discriminant elements of personality impairment included rigid, unrealistically positive self-view, low empathy and high conflict with others for grandiosity, and incoherent identity, low self-esteem and hypervigilant, avoidant relations with others for vulnerability. Regarding trait profile, grandiose narcissism was predominately dissocial whereas vulnerable narcissism was primarily associated with negative affectivity and detachment. Qualitative responses highlight distinct clinical themes for each presentation. These findings suggest that clinicians using the ICD-11 framework are able to identify common core elements of personality dysfunction in grandiose and vulnerable narcissism while also recognizing their distinctive differences.

Do Parents' Internal Processes and Feelings Contribute to the way they Report Their Children's Mental Difficulties on the Strength and Difficulties Questionnaire (SDQ)?

The way parents report their child's emotional and behavioral difficulties is important both for identifying the child's needs, diagnosis, and prevention. This study examined to what extent parents' internal processes predict the way in which parents report their child's emotional and behavioral difficulties on the SDQ, as mediated by parental feelings. Parents of children who were referred to a community mental health clinic completed a self-report questionnaire including the following scales: adulthood attachment style, self-regulation difficulty, personal well-being, self-compassion parental feelings, and their child's emotional-behavioral difficulties. Study findings indicated that parents' internal processes do not directly predict parents' report of their children's mental difficulties on the SDQ, only when mediated by parental feelings. These findings highlight the significance of parental feelings in reporting children's behavioral and emotional difficulties. It also contributes to the body of knowledge concerning the importance of caring for parents' needs and feelings and overall parenthood.

Convergence of Age Differences in Risk Preference, Impulsivity, and Self-Control: A Multiverse Analysis

OBJECTIVES

Numerous theories exist regarding age differences in risk preference and related constructs, yet many of them offer conflicting predictions and fail to consider convergence between measurement modalities or constructs. To pave the way for conceptual clarification and theoretical refinement, in this preregistered study we aimed to comprehensively examine age effects on risk preference, impulsivity, and self-control using different measurement modalities, and to assess their convergence.

METHODS

We collected a large battery of self-report, informant report, behavioral, hormone, and neuroimaging measures from a cross-sectional sample of 148 (55% female) healthy human participants between 16 and 81 years (mean age = 46 years, standard deviation [SD] = 19). We used an extended sample of 182 participants (54% female, mean age = 46 years, SD = 19) for robustness checks concerning the results from self-reports, informant reports, and behavioral measures. For our main analysis, we performed specification curve analyses to visualize and estimate the convergence between the different modalities and constructs.

RESULTS

Our multiverse analysis approach revealed convergent results for risk preference, impulsivity, and self-control from self- and informant reports, suggesting a negative effect of age. For behavioral, hormonal, and neuroimaging outcomes, age effects were mostly absent.

DISCUSSION

Our findings call for conceptual clarification and improved operationalization to capture the putative mechanisms underlying age-related differences in risk preference and related constructs.

Elevated perceived stress in university students due to the COVID-19 pandemic: Potential contributing factors in a propensity-score-matched sample

OBJECTIVE

Onset of the Coronavirus Disease 2019 (COVID) pandemic has increased students' perceived burdens. The current study aimed to examine COVID-related changes and to identify potential factors that contribute to students' stress.

METHOD

Adopting a cross-sectional cohort-study design, we examined perceived stress and depressive and anxiety symptoms with a specific focus on the role of study-related variables such as perceived study-related demands, study-related resources, academic procrastination, and stress-enhancing beliefs. Two cohorts (Npre-COVID = 2,175; NCOVID = 959) were recruited at the same university and matched with regard to their propensity score (age, gender, semester).

RESULTS

Compared with the pre-COVID cohort, university students in the COVID cohort reported more perceived stress, more depressive and anxiety symptoms, more academic procrastination due to fear of failure, more stress-enhancing beliefs, more distress due to the housing situation, and more perceived study-related challenges (Cohen's d = 0.15-0.45). A stepwise regression analysis identified depressive symptoms, procrastination due to fear of failure, general self-efficacy, increased study demands, perceived difficulties with self-organized learning, distress due to housing, and stress-enhancing beliefs as predictors of perceived stress in the COVID cohort.

DISCUSSION

Findings suggest that the switch to online-only education increased the study-related burden for students, primarily due to exams being replaced by a greater amount of regular coursework and imposing demands on self-organized learning. Possibly, stress-enhancing beliefs and procrastination due to fear of failure might have been elevated due to less opportunity for social referencing and lack of felt social support by peer students.

CONCLUSION

Experienced increased burden in students during the COVID pandemic was mostly accounted for by a lack of perceived individual resources rather than by an increase in objective study-related demands.

Values and National Identification in Minority and Majority Youth: Longitudinal Multi-Study Findings

Collective identification is vital for adolescents, fostering well-being and connection, but scant attention has been given to drivers of national identification and their contextual variations in youth. To address this, two longitudinal studies examined how values, as guiding goals defining what individuals consider important in their lives, relate to the trajectory of national identification in majority and minority youth. Study 1 (N = 568; Mage = 16.24, SD = 0.71) and Study 2 (N = 678; Mage = 13.78, SD = 0.73) focused on majority youth (Jewish-Israelis), while Study 2 also included minority (Arab citizens of Israel). The findings highlight values as important motivators of national identification over time. Conservation values, emphasizing the preservation of the status quo and a preference for stability, were prominent motivators for the majority of adolescents. In contrast, power values, which center around climbing the social ladder and accumulating wealth, held greater significance among their minority counterparts; however, both sets of values correlated with increased national identification. The discussion touches on motivations underlying national identification, their contextual diversity, and implications for future studies.