Fascinating study: sexism increases the likelihood of infidelity.

[Paidiske]

Both Hostile and Benevolent Sexism Predict Men's Infidelity - PubMed

Infidelity has destructive effects on romantic relationships. Several idiographic characteristics or experiences in an intimate relationship have been linked to unfaithfulness. Yet, relatively little research has been paid to investigate how sexist beliefs might sabotage relationships by...

pubmed.ncbi.nlm.nih.gov

Key sentences from the abstract (emphasis mine):
The results showed that men's hostile sexism and benevolent sexism predicted their increased infidelity. In addition, the indirect association between ambivalent sexism (both hostile sexism and benevolent sexism) and infidelity was through the importance placed on power in one's intimate relationship in general.

 

[Gregory Thompson]

Yet, relatively little research has been paid to investigate how sexist beliefs might sabotage relationships by incurring infidelity.