The association between social class and aggression: A meta-analytic review

RATIONALE

Substantial evidence links social class with aggression. Despite lower social class being recognized as a risk factor for high levels of aggression, the findings of this association have been inconsistent. Some studies have indeed illustrated that a social class level is inversely associated with aggression, while other studies have demonstrated positive or null associations.

OBJECTIVE

To clarify previously inconsistent findings, this meta-analysis assesses the overall magnitude of this relationship and examines the potential moderators.

METHODS

A total of 268 studies met the inclusion criteria, and we used 546 effect sizes in 357 independent samples from these studies. A random-effects meta-analytic model was employed and several moderator analyses were conducted.

RESULTS

Overall, social class shared a small but significant negative relationship with aggression (r = -0.092). Moderator analyses suggested that study-level (e.g., type of study, and national differences), sample-level (e.g., age), class-level (e.g., type, assessment, and source of social class), and aggression-level (e.g., type of aggression) characteristics accounted for heterogeneity in the relationship. Additional analyses also revealed the robustness of these effects with little evidence of publication bias.

CONCLUSIONS

Living in disadvantaged socioecological environments, lower-class individuals may exhibit more aggression to adapt to threats. Moreover, the relationship between social class and aggression is not fixed and can change with specific contexts, and aggression is not an essential feature of a particular social group. This research hopes to inspire future studies to explore the association between social class and aggression more thoroughly. Additionally, it provides insights into how to reduce aggression among lower-class individuals.

Harsh Childhood Discipline and Developmental Changes in Adolescent Aggressive Behavior: The Mediating Role of Self-Compassion

Harsh discipline during childhood (psychological aggression and corporal punishment) has been found to be an early risk factor for adolescent aggressive behavior. However, previous studies have mainly examined the relationship between harsh discipline as a whole and the level of adolescent aggressive behavior. This study investigates the effects of childhood psychological aggression and corporal punishment on the initial levels and rate of change in adolescent aggressive behavior, as well as the mediating role of self-compassion in this relationship. Using cluster sampling, a three-wave follow-up assessment was conducted on 1214 high-school students (60.7% boys; mean age at Wave 1 = 15.46 ± 0.71). The results showed that childhood psychological aggression and corporal punishment had a positive predictive effect on the development level of adolescent aggressive behavior. However, only childhood psychological aggression significantly directly attenuated the decline rate of adolescent aggressive behavior. In addition, both childhood psychological aggression and corporal punishment indirectly affected the initial levels and growth rate of adolescent aggressive behavior through self-compassion. These findings could provide potential targets for prevention and intervention programs aimed at improving aggressive behavior in Chinese adolescents.

The Mediatory Role of Executive Functioning on the Association Between Sleep and Both Everyday Memory and ADHD Symptoms in Children and Youth With Down Syndrome

People with Down syndrome (DS) commonly experience challenges with sleep, executive functioning, everyday memory, and symptoms of attention deficit hyperactivity disorder (ADHD). A path analysis was conducted to determine if executive function mediated the relationship between sleep problems and both everyday memory and ADHD symptoms. Parents of 96 children and youth with DS completed questionnaires related to sleep, executive functioning, everyday memory, and ADHD symptoms. Results showed that executive functioning fully mediated the relation between sleep and both everyday memory and ADHD symptoms. Implications for education and intervention for children and youth with DS are discussed.

Developmental connections between socioeconomic status, self-regulation, and adult externalizing problems

Children from low socioeconomic status (SES) backgrounds are at particularly heightened risk for developing later externalizing problems. A large body of research has suggested an important role for self-regulation in this developmental linkage. Self-regulation has been conceptualized as a mediator as well as a moderator of these connections. Using data from the Child Development Project (CDP, N = 585), we probe these contrasting (mediating/moderating) conceptualizations, using both Frequentist and Bayesian statistical approaches, in the linkage between early SES and later externalizing problems in a multi-decade longitudinal study. Connecting early SES, physiology (i.e., heart rate reactivity) and inhibitory control (a Stroop task) in adolescence, and externalizing symptomatology in early adulthood, we found the relation between SES and externalizing problems was moderated by multiple facets of self-regulation. Participants from lower early SES backgrounds, who also had high heart rate reactivity and lower inhibitory control, had elevated levels of externalizing problems in adulthood relative to those with low heart rate reactivity and better inhibitory control. Such patterns persisted after controlling for externalizing problems earlier in life. The present results may aid in understanding the combinations of factors that contribute to the development of externalizing psychopathology in economically marginalized youth.

The role of self-regulatory control processes in understanding aggressive ideations and behaviors: An experience sampling method study

INTRODUCTION

In this study, we aimed to examine the association between aggressive ideations and aggressive behaviors in everyday life, as well as the role of processes related to self-regulatory control (i.e., self-control, ego depletion, and emotional states), using experience sampling methods (ESM).

METHODS

A total of 62 male adolescents performed a baseline measure of aggression, violent ideations (trait level), and ESM assessments, including four measures per day during nine consecutive days.

RESULTS

At a state level, aggressive ideations were associated with higher negative emotions during the previous day as well as with lower self-control and stronger anger rumination at the moment. Aggressive behaviors were related to higher anger rumination at the moment and to the manifestation of higher intensity of aggressive ideations derived in the previous measure. Higher self-control was related to a lower probability of aggressive behavior.

DISCUSSION

This study highlights the temporal link between aggressive ideations and behaviors in everyday life as well as the role of self-control in understanding aggressivity in the lap of time. Furthermore, we observed that expressions of anger (i.e., reactivity, as well as rumination) were central in the understanding of aggressive ideations and behaviors in the everyday life (i.e., at within-person variability at the state level).

Executive function as a mechanism linking socioeconomic status to internalizing and externalizing psychopathology in children and adolescents

INTRODUCTION

The association between low socioeconomic status (SES) in childhood and increased risk for psychopathology is well established, but the mechanisms explaining this relationship are poorly understood. Here, we investigate the potential role of difficulties in executive functioning (EF) as a mechanism linking childhood and adolescent SES with externalizing and internalizing psychopathology.

METHODS

We examined whether difficulties with EF mediated the association between SES and externalizing and internalizing psychopathology in two cross-sectional samples of children and adolescents (Study 1: N = 94, ages 6-18, 51.1% male; Study 2: N = 259, ages 8-16, 54.1% male) from diverse SES backgrounds in the United States. EF was measured through behavioral tasks and parent-reported behavioral regulation (BR).

RESULTS

In both samples, children and adolescents from lower SES families were more likely to experience both externalizing and internalizing psychopathology than youth from more advantaged backgrounds and exhibited greater EF difficulties - they had lower performance on a task measuring inhibitory control and lower parent-rated BR. Reduced inhibitory control and BR, in turn, were associated with higher externalizing and internalizing psychopathology. In Study 1, difficulties with BR mediated the association of low-SES with both externalizing and internalizing psychopathology. In Study 2, low inhibitory control mediated the association between low-SES and externalizing psychopathology. These findings largely persisted after adjusting for exposure to violence, a form of adversity that is common in children from low-SES backgrounds.

CONCLUSIONS

These findings suggest that reduced EF may be an underlying mechanism through which low-SES confers risk for psychopathology in children and adolescents.

Is Attitudinal Acceptance of Violence a Risk Factor? An Analysis of Domestic Violence Against Women in Pakistan

Violence against women (VAW) is a grave problem in Pakistan, and women from all socioeconomic groups are vulnerable to domestic violence in varying degrees. It is argued that patriarchal definition of gender roles may reinforce the internalized inferiority of women. So, it may not be a mere coincidence that a large number of women in Pakistan justify VAW for various reasons. The objectives of this article are threefold: (a) to identify the drivers of VAW, (b) to see if women's attitudinal acceptance of violence is causally linked with observed violence against women, and (c) to see if attitudinal acceptance of violence mediates between the socioeconomic status of women and observed violence. We used data from the Pakistan Demographic and Health Survey (PDHS) 2012-13. The sample consisted of 3,265 ever married women aged between 15 and 49 years who were interviewed for domestic violence. We used multivariate logit regression analysis to identify the drivers of VAW and used the Karlson-Holm-Breen (KHB) method for mediation analysis. We found that women's attitudinal acceptance of violence, their childhood experience of violence in their parental household, the education of both husband and wife, and some occupation types significantly predicted their experience of spousal violence. In addition, we found that women's attitudinal acceptance of violence mediated the relationships between socioeconomic factors (education and wealth status) and VAW. The significance of the study lies in the fact that it highlights the need to modify the perceptions of violence through change in educational policy. Among multiple other factors, an increase in the economic status of women is an effective hedge against the risk of spousal violence.

Reading Deficits, Executive Functions, and Social Adjustment Problems: Direct and Mediated Relations

The main objective of the present study was to examine the direct and indirect relations between reading deficits, executive functions, and social adjustment problems in a sample of 210 adolescents. Results demonstrated significant positive correlations between reading deficits, executive function deficits, and social adjustment problems. Furthermore, the findings from two multimediation models indicated that, of three behavioral regulation deficits, inhibition, and, of five metacognitive deficits, initiate and working memory were significant mediators of the reading deficit-social adjustment problem association. We conclude that specific executive function deficits explain the association between reading deficits and social adjustment problems. Implications of the current findings are discussed along with suggestions for interventions to improve reading abilities and executive functions to make adolescents better able to adjust in their social context.

Executive functions, parental punishment, and aggression: Direct and moderated relations

The main focus of the current study was to assess whether executive functions (EFs) moderate the effect of parental punishment on adolescent aggression. The sample were 370 participants (53% girls, 47% boys) enrolled at secondary and higher secondary levels and ranged in age between 13-19 years (M = 15.5, SD = 1.3). Participants were assessed on a self-report measure of aggression and two punishment measures, in addition to a demographic sheet. Then, they were individually assessed on four tests taken from the Delis-Kaplan Executive Functions System (D-KEFS) namely Trial Making Test (TMT), Design Fluency Test (DFT), Color Word Interference Test (CWIT), and Card Sorting Test (CST) to assess cognitive flexibility, nonverbal fluency, inhibition, and problem-solving ability, respectively. Correlation coefficients indicated that all four executive functioning measures and the two punishment measures were significantly correlated with aggression. Moderation analysis indicated that all EFs moderated the relationship between physical punishment and aggression, and only inhibition and problem-solving ability, but not cognitive flexibility and nonverbal fluency, moderated the relations between symbolic punishment and aggression. The findings support the hypothesis that EFs are protective personal factors that promote healthy adolescent adjustment in the presence of challenging environmental factors.

Adolescent Aggression as Predicted from Parent-Child Relationships and Executive Functions

Previous research has emphasized the role of parent-child relationships (PCRs) in child and adolescent development. The present study extends the previous findings by examining the direct and mediated relationship between PCRs, executive functioning (EF), and adolescent aggression. Five hundred twelve adolescents of South Asian ethnic background, enrolled at the secondary and higher secondary levels (aged 13-19 years; 50% boys), participated in the study. The Parent-Child Relationship Scale (Rao, 2000), Aggression Scale (Mathur & Bhatnagar, 2004), and four tests from the Delis-Kaplan Executive Function System (Delis, Kaplan, & Kramer, 2001) were administered to measure the perceived quality of PCR, level of aggression, and EF, respectively, in participants. Pearson correlation coefficients revealed that perceived PCRs were related to EF and adolescent aggression among South Asian youth. Furthermore, multiple regression analyses using Baron and Kenny's (1986) guidelines showed that the influence of PCRs on aggression was partially mediated by EF The findings suggest that PCRs and EF can be important factors to focus on in interventions aimed at preventing adolescent aggression in society.