Correlations of impulsivity and aggressive behaviours among adolescents in Shanghai, China using bioecological model: cross-sectional data from Global Early Adolescent Study

Adult ADHD predicts intimate partner violence perpetration and victimization irrespective of gender and age

Understanding the determinants of intimate partner violence (IPV) from perpetrator and victim perspectives has become a major objective of behavioral science. Empirical evidence suggests that adults at risk for Attention-Deficit/Hyperactivity Disorder (ADHD), compared to the general population, tend to have more conflictual partnerships, and the presence of ADHD increases the risk of aggressive behavior. Possible influences of gender have not been sufficiently investigated yet. Using data from an anonymous online survey, this study examined the relationship between ADHD and IPV in 316 male and female individuals with (n = 131) and without (n = 185) ADHD. Multiple linear regression analyses showed that adults at risk for ADHD had more frequently become both victims and perpetrators of IPV compared to the healthy control group. ADHD achieved significant incremental variance over gender and age. Thus, the presence of ADHD seems to be an important risk factor for IPV irrespective of gender and age. Accordingly, research and treatment approaches focusing on ADHD must not neglect the risk of IPV among patients but should offer specific psychological support.

Does mindfulness moderate the association between impulsivity and well-being in Lebanese university students?

Limited evidence showed that impulsivity is negatively related to life satisfaction and wellbeing; however, the mechanisms underlying this relationship remain unclear. We aimed through this work to investigate the relationship between impulsivity dimensions and well-being and to explore the moderator role of mindfulness on this relationship in a sample of Lebanese university students. This cross-sectional study was carried out among 363 university students recruited through convenience sampling through several universities in Lebanon's governorates. Higher mindfulness was significantly associated with better wellbeing in the models that considered urgency and sensation seeking as independent variables. A lack of premeditation and a lack of perseverance were both inversely associated with well-being. The interaction lack of perseverance by mindfulness was significantly associated with wellbeing; for students who were low in mindfulness, more lack of perseverance was significantly associated with a lower wellbeing. Our study suggested that mindfulness practice may offer a promising avenue for implementing strategies aiming at improving the well-being of students with high levels of impulsivity.

What does metaphoric language say about aggression? The relationships between metaphoric language, impulsivity, and aggression

Aggressive behavior among adolescents has been identified as a serious worldwide problem, especially when combined with trait impulsivity. This study investigates the impact of an overlooked aspect of language, namely, metaphor comprehension, on impulsivity and aggression in adolescents. A total of 204 adolescents completed self-reported questionnaires assessing impulsivity and aggression and underwent tests assessing familiar and less familiar metaphor comprehension. The findings reveal inverse relationships between metaphor comprehension and both impulsivity and aggression. Regarding aggression, notable distinctions were observed in the correlations between familiar and less familiar metaphors with specific aggression types. Additionally, impulsivity was found to mediate the relationship between the comprehension of familiar metaphors and aggression. These results are elucidated in the context of cognitive and executive functions, emphasizing the significance of considering metaphor comprehension as a cognitive process capable of modulating aggressive behavior.

Attention-deficit/hyperactivity disorder as a risk factor for being involved in intimate partner violence and sexual violence: a systematic review and meta-analysis

BACKGROUND

Intimate partner violence (IPV) and sexual violence (SV) are significant problems world-wide, and they affect women disproportionally. Whether individuals with attention-deficit/hyperactivity disorder (ADHD) are at an increased risk of being involved in these types of violence is unclear.

METHODS

We carried out a systematic review and meta-analysis (PROSPERO registration CRD42022348165) of the associations between ADHD and being the victim or perpetrator of IPV and SV. Ratios of occurrence of violence were pooled in random-effects models and study risk of bias was evaluated using the Newcastle-Ottawa Scale.

RESULTS

A search on multiple databases, carried out on 7 October 2022, yielded 14 eligible studies (1 111 557 individuals). Analyses showed a higher risk of ADHD individuals being involved in IPV as perpetrators (six studies, OR 2.5, 95% CI 1.51-4.15) or victims (four studies, OR 1.78, 95% CI 1.06-3.0). Likewise, individuals with ADHD were at increased risk of being perpetrators (three studies, OR 2.73, 95% CI 1.35-5.51) or victims of SV (six studies, OR 1.84, 95% CI 1.51-2.24). Results were overall robust to different analytical choices.

CONCLUSIONS

Individuals with ADHD are at an increased risk of being involved in cases of violence, namely IPV and SV, either as victims or perpetrators. Although the causal path or mediating variables for these results are still unclear, this increased risk should inform evidence-based psychoeducation with individuals with ADHD, their families, and partners about romantic relationships and sexuality.

Dopamine transporter blockade during adolescence increases adult dopamine function, impulsivity, and aggression

Sensitive developmental periods shape neural circuits and enable adaptation. However, they also engender vulnerability to factors that can perturb developmental trajectories. An understanding of sensitive period phenomena and mechanisms separate from sensory system development is still lacking, yet critical to understanding disease etiology and risk. The dopamine system is pivotal in controlling and shaping adolescent behaviors, and it undergoes heightened plasticity during that time, such that interference with dopamine signaling can have long-lasting behavioral consequences. Here we sought to gain mechanistic insight into this dopamine-sensitive period and its impact on behavior. In mice, dopamine transporter (DAT) blockade from postnatal (P) day 22 to 41 increases aggression and sensitivity to amphetamine (AMPH) behavioral stimulation in adulthood. Here, we refined this sensitive window to P32-41 and identified increased firing of dopaminergic neurons in vitro and in vivo as a neural correlate to altered adult behavior. Aggression can result from enhanced impulsivity and cognitive dysfunction, and dopamine regulates working memory and motivated behavior. Hence, we assessed these behavioral domains and found that P32-41 DAT blockade increases impulsivity but has no effect on cognition, working memory, or motivation in adulthood. Lastly, using optogenetics to drive dopamine neurons, we find that increased VTA but not SNc dopaminergic activity mimics the increase in impulsive behavior in the Go/NoGo task observed after adolescent DAT blockade. Together our data provide insight into the developmental origins of aggression and impulsivity that may ultimately improve diagnosis, prevention, and treatment strategies for related neuropsychiatric disorders.

Family intimacy and adolescent peer relationships: investigating the mediating role of psychological capital and the moderating role of self-identity

According to existing research, family intimacy affects the formation of peer relationships among adolescents; Parent-child relationships may influence children's relationships with peers, but the mechanism of its influence is still unclear due to the uncertainty of its effect. According to the ecological systems theory, this study examines how family intimacy affects adolescent peer relationships through psychological capital and how self-identity moderates this effect. These hypotheses were tested based on a survey of 414 adolescents, which showed that family intimacy positively affects adolescent peer relationships; The relationship between family intimacy and adolescent peer relationships is mediated by psychological capital; Self-identity positively moderates the direct effects of family intimacy and adolescent peer relationships; Self-identity not only positively moderates the direct effect of psychological capital and adolescent peer relationship, but also positively moderates the indirect effect of family intimacy on adolescent peer relationship through psychological capital. This study provides new perspectives on the relevant mechanism of family intimacy and adolescent peer relationships.

Associations between tobacco and alcohol use and aggressive behavior among adolescents in 55 Low- and Middle-Income countries

BACKGROUND

Aggressive behavior has become a serious public health problem among adolescents worldwide. We aimed to assess the associations between tobacco and alcohol use and aggressive behavior among adolescents in 55 Low- and Middle-Income countries (LMICs).

METHODS

Data from 55 LMICs that had done a Global School-based Student Health Survey (GSHS) between 2009 and 2017, comprising 187,787 adolescents aged 12-17 years, were used to examine the associations between tobacco and alcohol use and aggressive behavior.

RESULTS

Among adolescents in the 55 LMICs, the proportion of aggressive behavior was 5.7 %. Compared with none tobacco users, those who used tobacco on 1-5 days (odds ratio [OR] = 2.00, 95 % confidence interval [CI] = 1.89-2.11), 6-9 days (2.76, 2.48-3.08), 10-19 days (3.20, 2.88-3.55), and ≥20 days (3.88, 3.62-4.17) during the past 30 days were positively associated with aggressive behavior. Compared with none alcohol users, those who used alcohol on 1-5 days (1.44, 1.37-1.51), 6-9 days (2.38, 2.18-2.60), 10-19 days (3.04, 2.75-3.36), and ≥20 days (3.25, 2.93-3.60) during the past 30 days were positively associated with aggressive behavior.

LIMITATIONS

Aggressive behavior, tobacco use and alcohol use were assessed by self-reported questionnaires, which might be prone to recall bias.

CONCLUSIONS

Higher amounts of tobacco and alcohol use are associated with aggressive behavior among adolescents. These findings emphasize the need to strengthen tobacco and alcohol control efforts to reduce tobacco and alcohol use targeting adolescents in LMICs.

[Impulsivity and aggression in patients at risk for schizophrenia at the stage of remission after the first depressive episode]

OBJECTIVE

To study the phenomenon of impulsivity, its components and aggression in patients at risk for schizophrenia at the stage of remission after the first depressive episode.

MATERIAL AND METHODS

Forty-eight male patients (mean age 19.4±2.9 years) with the first depressive episode (ICD-10 F32.1, F32.2) with attenuated positive, negative and/or disorganized symptoms were examined. According to the severity of impulsivity, the patients were divided into the clinical group (n=26) with pathological impulsivity and the comparison group (n=27) without it. The control group consisted of 41 mentally healthy young men, students of higher education of 1-3 courses, (mean age 19.7±1.6 years). HDRS, SOPS, SANS, Barratt Impulsiveness Scale (BIS-11) and Buss Perry Aggression Questionnaire (BPAQ) were used. Statistical analysis was carried out using the Statistica 12 software.

RESULTS

The differences between the clinical group and the comparison group were determined by the total score of the subscale of general symptoms of SOPS at admission (53 [41.75; 56] and 45.5 [41.75; 51.25], respectively) (U=187.5; p=0.037) and at discharge (28 [19; 37] and 25 [17.75; 29.25] points respectively) (U=166.5; p=0.012), according to the total HDRS score at admission (35 [31; 38] and 29 [26; 34.25]) (U=191.0; p=0.046). In the clinical group, the motor component of impulsivity and the factor of general impulsivity on the BIS-11 correlated with the severity of aggression on the BPAQ (r=0.395, p<0.05 and r=0.635, p<0.05, respectively). Significant differences were revealed in the clinical group depending on the presence of negative symptoms on the corresponding SOPS subscale according to the total BPAQ score (p=0.01). Correlation analysis showed numerous connections: positive between the total aggressiveness score and the duration of depression (p<0.05), negative between the factors of self-control, consistency, attention, and total scores on the SANS and SOPS (p<0.05).

CONCLUSION

We identify the differences in the structure of impulsivity in patients at risk of developing schizophrenia at the stage of remission after the first depressive state, the comparison group and the control group, as well as the relationship of impulsivity factors with individual clusters of psychopathological disorders.

Not Only Excessive Daytime Sleepiness but Also Depression Symptoms, Chronological Age and Onset-Age Were Associated with Impulsivity in Narcolepsy Type 1 Patients

Objective

To detect the factors associated with total and subscales impulsivity scores in narcolepsy and further explore the non-linear relationship between these factors and impulsivity score.

Methods

One hundred and fifty-eight narcolepsy type 1 (NT1) patients were involved in this cross-sectional study. Patients completed questionnaires evaluating impulsivity symptoms (Barratt impulse scale-11, BIS-11), depression symptoms (Center for Epidemiologic Studies Depression Scale for Children, CES-DC or Self-Rating Depression Scale, SDS) and sleepiness (Epworth Sleepiness Scale, ESS). Parameters from polysomnography and multiple sleep latency test were also collected. Linear regression analysis was performed to detect the factors associated with total and subscales impulsivity scores. Then, generalized additive models and smooth curve fitting were performed to explore the non-linear relationship between chronological age and impulsivity scores.

Results

Factors associated with higher total impulsivity score were higher ESS, older onset and adolescents. Factors associated with higher attentional impulsivity score were higher ESS, older onset and adolescents. Factors associated with higher motor impulsivity score were higher ESS, younger onset and depression symptoms. Factors associated with higher non-planning impulsivity score were adolescents, older onset and depression symptoms. A non-linear relationship between age and impulsivity scores (total impulsivity score, attentional impulsivity score and non-planning impulsivity score) was detected in NT1 patients.

Conclusion

Not only excessive daytime sleepiness but also onset-age, depression symptoms and chronological age were associated with impulsivity in NT1 patients. The non-linear relationship between age and impulsivity scores suggested brain and mental development alterations in NT1 patients.