Machiavellianism and Intimate Partner Violence Perpetration: A Systematic Review and Meta-Analysis.

This systematic review and meta-analysis estimated the size of the relationship between Machiavellianism and intimate partner violence (IPV) perpetration. Further, we explored whether the strength of this relationship varied depending on IPV type (i.e., physical, psychological, sexual, and cyber), and perpetrator gender. Systematic searches of Medline Complete, PsycInfo, Scopus, and Web of Science databases were conducted on July 4, 2023. Studies were included if they were a peer-reviewed published paper or unpublished dissertation, in English, included a measure of Machiavellianism and IPV perpetration, and reported the relationship between these variables. Study quality was assessed using the AXIS tool. Nineteen studies ( N  = 9,464) were included in a random-effects meta-analysis revealing a significant, weak, positive correlation between Machiavellianism and IPV perpetration ( r  = .16, 95% CI [0.11, 0.21], p  < .001). Machiavellianism had a significant, weak, positive relationship with cyber ( r  = .25, 95% CI [0.17, 0.32], p  < .001), psychological ( r  = .20, 95% CI [0.15, 0.24], p  < .001), and sexual IPV ( r  = .10, 95% CI [0.02, 0.19], p  = .020). No significant relationship was found for physical IPV. There was no significant difference in the strength of the relationship between women and men. These findings are limited by the measures being self-report, heterogeneity across studies, and the cross-sectional nature of the included studies which limits the understanding of causal pathways. Nonetheless, this meta-analysis shows a link between Machiavellianism and IPV perpetration, and future research should examine how this knowledge may be used to reduce IPV perpetration.