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Peer Influences in Alcohol and Sexual Violence Among Marines Dyads

Sponsor: Georgia State University • ClinicalTrials.gov ID: NCT07256275

Registry updated: 2026-09-15

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Description

The goal of this experimental study is to examine the complex and multifaceted influence of peers on alcohol-involved sexual violence perpetration (ASVP) in U.S. Marine Corps (USMC) men. The specific aims are: Aim 1: Use ecological momentary assessment (EMA) to examine event-level effects of one's own alcohol use, peer alcohol use, and injunctive norms on ASVP intentions among dyads of Marine men who drink together (n=160 dyads; 320 total participants). Aim 2: Examine the individual and peer effects on ASVP behavior in an experimental paradigm with a gender x confederate (potential victim) intoxication status design. In-the-moment dyad-peer verbalized encouragement for ASVP ("go cues") will be assessed by qualitatively coding verbalizations during the interaction. Aim 3: Examine modifiable risk factors on ASVP intentions in vivo (Aim 1; EMA) and ASVP behavior in vitro (Aim 2; experiment) settings. Participants will complete: 1) an individual orientation session with informed consent, baseline assessment, and EMA demo; 2) 14 days of EMA completed individually; and 3) a dyadic session to complete an experimental paradigm via videoconferencing. All study procedures will be completed in off-duty time as to not interfere with military duties.

Interventions

Sexual Imposition Task (Other)
Dyads will complete the Sexual Imposition Task and will be randomly assigned to have the individual opportunity to perpetrate sexual violence against another Marine who is (1) a sober man, (2) a sober woman, (3) an intoxicated man, or (4) an intoxicated woman.

Eligibility criteria

Inclusion Criteria: * Men * Aged 21 or older * Currently serving in the United States Marine Corps (USMC) * Marine dyads must have engaged in heavy episodic drinking (≥5 drinks in less than two hours) together at least twice in the past month * Marine dyads must rate their peer at a minimum of "somewhat important" on the Important People Interview. Exclusion Criteria: * The only exclusion criteria is not meeting inclusion criteria.

Conditions

Peer Influence Alcohol-Involved Sexual Violence Perpetration

Locations

Georgia State University — Atlanta, Georgia, United States

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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