Aggressive Behavior最新文献

Few studies have distinguished and compared the relationships and pathways between peer acceptance, peer rejection, friendship quality, self-concept, and victimization, as well as their interactions with classroom characteristics. This study aimed to address this gap by examining these relationships over 1 year, focusing on the roles of collective efficacy and self-concept at both the classroom and individual levels. A sample of 1053 elementary school students in grades 4–6 across 36 classes completed questionnaires, and a multilevel moderated mediation model was constructed. After controlling for gender and grade, the study found: (1) The association between friendship quality and victimization was the strongest, followed by peer acceptance and peer rejection, with no significant difference between the latter two. (2) Peer acceptance was related to victimization entirely through self-concept, while peer rejection was directly related to victimization. Friendship quality was primarily related to victimization directly rather than through self-concept. (3) Collective efficacy was negatively related to victimization and moderated the relationships between peer rejection, friendship quality, and victimization. Higher collective efficacy reduced the association between peer rejection and victimization but diminished the protective effect of friendship quality on victimization. This study not only clarified the specific roles and pathways of peer acceptance, peer rejection, and friendship quality in relation to victimization but also highlighted the protective role of peer interactions at the classroom level, enhancing our understanding of victimization dynamics.

Sensory processing of communication stimuli is essential for the survival of organisms across all evolutionary branches. Multimodal signaling, the use of multiple sensory systems is crucial in this process, but little is known about the relative importance of different senses used during aggression. We used the African cichlid fish, Astatotilapia burtoni, to test how visual and chemosensory signals in male–male interactions influence behavior. Males of this species exist in a dominance hierarchy, where brightly colored dominant individuals aggressively defend territories for reproductive activities. Focal males were presented with visual and chemosensory signals from other males either alone (unimodal) or together (bimodal). We found that vision is necessary for males to engage in aggressive behaviors such as frontal displays, lateral displays, and border fights. While chemical signals alone did not evoke aggressive behaviors, we find slight reductions of some aggressive behaviors when bimodal stimuli are provided. This study is the first to examine how visual–chemosensory signaling impacts male–male aggressive behavior in A. burtoni and provides insight on how these signaling modalities mediate territorial interactions.

The general aggression model (GAM) suggests that cyber-aggression stems from individual characteristics and situational contexts. Previous studies have focused on limited factors using linear models, leading to oversimplified predictions. This study used the light gradient boosting machine (LightGBM) to identify and rank the importance of various risk and protective factors in cyber-aggression. The SHAP (SHapley Additive exPlanations) technique estimated each variable's predictive effects, and two-dimensional partial dependence (PD) Plots examined interactions among predictors. Among 30 potential factors, the top five were attitudes toward violence, revenge motivation, anti-bullying attitudes, moral disengagement, and anger rumination. PD analysis showed significant interactions between protective factors (anti-bullying attitudes and moral reasoning) and risk factors (attitudes toward violence, revenge motivation, moral disengagement, and anger rumination). High scores on protective factors mitigated the impact of risk factors on cyber-aggression. These findings support and expand GAM, offering implications for reducing cyber-aggression among Chinese college students.

Adolescent dating violence (ADV) research has neglected the environmental factors at play in contexts of perpetration. This study, conducted in Chile, investigated the socio-cognitive processes inherent to the relationship between child abuse and ADV perpetration by examining the association between child abuse, impulsivity, reactive aggression, proactive aggression, attitudes that rationalize or justify ADV, and actual ADV perpetration. Data were collected from 655 adolescents using self-reported measures of child abuse, impulsivity, reactive and proactive aggression, attitudes justifying ADV, and ADV perpetration using structural equation modeling. Having experienced child abuse predicted higher levels of impulsivity, which in turn predicted higher levels of aggressive traits, both for reactive and proactive aggression. Proactive aggression predicted higher levels of ADV perpetration, whereas reactive aggression did not. While we did not find that child abuse predicted a greater propensity for ADV, nor that such a disposition indicated a higher level of proactive aggression by influencing ADV perpetration, we did find that a positive attitude toward ADV predicted a higher frequency of ADV perpetration. Our results suggest that the socio-cognitive process underlying ADV involves automatic and complex processes stemming from child abuse, thus linking environmental and individual factors.

Cyber aggression is prevalent among emerging adults and is associated with a range of mental and behavioral issues. One particularly concerning outcome is the widespread presence of suicidal ideation in this group, which poses a significant threat to their life. However, the specific impact of cyber aggression on suicidal ideation and the longitudinal mechanisms remains unclear. Hence, this study sought to address these gaps by applying the general aggression model (GAM). The investigation utilized three-wave longitudinal data with 6-month intervals from a large sample of Chinese emerging adults (N = 1568; 54.7% female; M_age = 19.70 [SD = 1.44], ranging from 17 to 26 years). The random-intercept cross-lagged panel model (RI-CLPM) was employed to explore the roles of depressive symptoms and nonsuicidal self-injury (NSSI) between cyber aggression and suicidal ideation at both the between- and within-person levels. The findings indicated that, at the between-person level, there were trait-like associations between depressive symptoms and cyber aggression, NSSI, and suicidal ideation. At the within-person level, cyber aggression exhibited unidirectional positive cross-lagged effects on depressive symptoms and NSSI, and could subsequently indirectly lead to suicidal ideation via the contemporaneous associations from depressive symptoms and NSSI to suicidal ideation. These results not only align with GAM but also shed light on the underlying mechanisms linking cyber aggression to suicidal ideation. Also, the findings underscore the significance of maintaining a positive network environment for the well-being of all internet users even cyber aggression perpetrators.