Suchergebnisse

Using the three-dimensional model of executive function and the I3 theory of aggressive behavior, we examined the mediating roles of inhibition, working memory, and cognitive flexibility in the relationship between impulsivity and both proactive and reactive aggression in
adolescents. We recruited 1,462 middle school and high school students in Sichuan Province, who completed the Reactive–Proactive Aggression Questionnaire, the Barratt Impulsivity Scale, the Teenage Executive Function Inventory, and the Cognitive Flexibility Questionnaire. Results showed
that impulsivity was positively correlated with both proactive and reactive aggression, and was negatively correlated with the three subcomponents of executive function. The three-dimensional components of executive function in adolescents were negatively correlated with both proactive and
reactive aggression. Further, impulsivity directly predicted both proactive and reactive aggression. In addition, all three subcomponents of executive function in parallel mediated the relationship between impulsivity and proactive aggression. However, only inhibition mediated the relationship
between impulsivity and reactive aggression. In conclusion, improving executive function may reduce the impact of impulsivity on aggression.

Purpose Based on the perspectives of social capital, image motivation and motivation affordances, this paper explores the direct and moderation effects of different kinds of motivations (i.e. relationship-based motivation, community-based motivation and individual-based motivation) on users' continuous knowledge contributions in social question and answer (Q&A) communities.Design/methodology/approachThe authors collect the panel data of 10,193 users from a popular social Q&A community in China. Then, a negative binomial regression model is adopted to analyze the collected data.Findings The paper demonstrates that social learning, peer recognition and knowledge seeking positively affect users' continuous contribution behaviors. However, the results also show that social exposure has the opposite effect. In addition, self-presentation is found to moderate the influence of social factors on users' continuous use behaviors, while the moderation effect of motivation affordances has no significance.Originality/value First, this study develops a comprehensive motivation framework that helps gain deeper insights into the underlying mechanism of knowledge contribution in social Q&A communities. Second, this study conducts panel data analysis to capture the impacts of motivations over time, rather than intentions at a fixed time point. Third, the findings can help operators of social Q&A communities to optimize community norms and incentive mechanisms.