RESUMO
OBJECTIVE: Previous studies have shown that the impairment of executive function is positively related to aggression in children and adolescents. What is worth investigating is the moderator of such a relationship so that aggressive behavior can be reduced effectively in those who have executive function problems. The present study examined the association between executive function and two major subtypes of aggression (proactive and reactive aggression) and whether their caregivers' grit (perseverance) moderated such relationship. METHOD: Executive function and reactive and proactive aggression were assessed in 254 children and adolescents aged 8-19 years old, and their caregivers' grit was measured. RESULTS: Results show that caregivers' grit plays a significant role in moderating the relationship between children's executive function and proactive aggression after controlling for the covariates including the children's age, gender, and family income. Specifically, children's executive function became more negatively associated with proactive aggression when caregivers' grit was high while the association was positive when it was low. On the other hand, the association between children's executive function and reactive aggression did not vary across different levels of caregivers' grit. CONCLUSION: These findings suggest that proactive aggression may be reduced in those who have better executive function by enhancing their caregivers' grit, which inform the design of interventions in adjunct with the current approach (e.g., executive function training) to reduce aggression in children and adolescents in the community.
RESUMO
Recent evidence suggests that the effects of meditation practice on affective processing and resilience have the potential to induce neuroplastic changes within the amygdala. Notably, literature speculates that meditation training may reduce amygdala activity during negative affective processing. Nonetheless, studies have thus far not verified this speculation. In this longitudinal study, participants (N = 21, 9 men) were trained in awareness-based compassion meditation (ABCM) or matched relaxation training. The effects of meditation training on amygdala activity were examined during passive viewing of affective and neutral stimuli in a non-meditative state. We found that the ABCM group exhibited significantly reduced anxiety and right amygdala activity during negative emotion processing than the relaxation group. Furthermore, ABCM participants who performed more compassion practice had stronger right amygdala activity reduction during negative emotion processing. The lower right amygdala activity after ABCM training may be associated with a general reduction in reactivity and distress. As all participants performed the emotion processing task in a non-meditative state, it appears likely that the changes in right amygdala activity are carried over from the meditation practice into the non-meditative state. These findings suggest that the distress-reducing effects of meditation practice on affective processing may transfer to ordinary states, which have important implications on stress management.
