Does mindfulness reduce trolling? The relationship between trait mindfulness and online trolling: The mediating role of anger rumination and the moderating role of online disinhibition

•Trait mindfulness as an inhibitor was significant negatively with online trolling.•Anger rumination as an instigator was significant positively with online trolling.•Anger rumination mediated the associations between trait mindfulness and online trolling.•Online disinhibition moderated the relationship between anger rumination and online trolling.•These findings supported the I3 theory of aggression. Online trolling is a highly prevalent online antisocial behaviour that has recently received increasing attention because of its potentially destructive consequences. The current study aimed to examine whether trait mindfulness was negatively related to online trolling and whether anger rumination mediated this relationship. We further examined whether online disinhibition moderated the direct and indirect relation between trait mindfulness and online trolling. A total of 1303 Chinese college students completed the measurements of trait mindfulness, anger rumination, online disinhibition, and online trolling. Moderated mediation analysis was performed to examine the relationships between these variables. After controlling for sex, the results showed that trait mindfulness was negatively related to online trolling and that this relationship was partially mediated by anger rumination. Moreover, the effect of anger rumination on online trolling was strengthened when online disinhibition was high. This study is a cross-sectional study, and causal inferences cannot be drawn. Individuals with trait mindfulness are less likely to ruminate anger and further express less online trolling. Online disinhibition serves as a risk factor for online trolling. Interventions targeting trait mindfulness, anger rumination, and online disinhibition might aid prevention strategies.