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Peer Influences in Alcohol and Sexual Violence Among Marines Dyads

Examining Peer Influences in Alcohol and Sexual Violence Among Marines Using a Dyadic Multimethod Approach

Who can join

Ages 21 and older · Men · Healthy volunteers welcome

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.

About the study

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.

What is being tested

• Sexual Imposition Task (other)

Sponsor: Georgia State University · Participants: 320 · Started: Mar 18, 2026

Contact the study team

• Amanda K Gilmore, PhD · Phone: (404) 413-2000

Official record on ClinicalTrials.gov — NCT07256275

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.