Discrepant Drinking and Partner Violence Perpetration Over Time in Lesbians' Relationships

Area of Science:

• Psychology
• Sociology
• Public Health

Background:

• Intimate partner violence (IPV) is a significant issue in relationships.
• Research on IPV in same-sex relationships, particularly female couples, is less extensive than in heterosexual relationships.
• The role of alcohol use, specifically discrepancies in consumption, as a risk factor for IPV in same-sex female couples requires further investigation.

Purpose of the Study:

• To examine the relationship between discrepant alcohol use and the perpetration of intimate partner violence (IPV) in same-sex female couples.
• To determine if differences in alcohol consumption predict subsequent psychological or physical aggression.
• To assess if psychological or physical aggression predicts subsequent differences in alcohol use.

Main Methods:

• Longitudinal study design with data collected at baseline, 6 months, and 12 months.
• Participants were self-identified lesbian women recruited from market research firms.
• Data collected included self-reported alcohol use (own and partner's) and perpetration of psychological and physical aggression.

Main Results:

• Discrepant drinking significantly predicted the subsequent perpetration of psychological aggression.
• Discrepant drinking did not predict the subsequent perpetration of physical violence.
• Both psychological and physical aggression predicted subsequent discrepant drinking patterns.

Conclusions:

• Differences in alcohol use are a risk factor for relationship aggression in same-sex female couples, mirroring findings in heterosexual relationships.
• The bidirectional relationship between alcohol use discrepancies and aggression suggests a potential cycle of conflict.
• Findings highlight the importance of addressing alcohol use patterns in interventions aimed at preventing IPV in same-sex female relationships.