Reducing Hazardous Alcohol Use in Social Networks Using Targeted Intervention

Summary

Alcohol use is almost ubiquitous on college campuses and first-year students are at particularly high risk of alcohol-related harm when they first make the transition to college. Peers are important agents in socializing both healthy and unhealthy behaviors, but despite the clear role of peer behavior in the maintenance of college problem drinking, there have been no efforts to measure the effect of individual change on the reduction of alcohol-related risks in the broader student body. That is, despite the importance of social connections for inducing and maintaining alcohol use in youth, intervention approaches have not measured nor capitalized on the potential of social influences for changing this problem behavior. It is essential that we understand the indirect effects of individual interventions and the impact such interventions have on the social structure and social connections. The best way to evaluate such effects is to use a research design that experimentally manipulates drinking using the best available intervention and measures its effects on the social network and its members.

The purpose of this research is to investigate whether using an established individual Brief Motivational Intervention (BMI) administered to a small number of influential network members embedded in a social network significantly reduces heavy drinking and alcohol consequences among close peers who do not receive any intervention. In addition, the investigators will investigate social influence mechanisms of this transmitted effect, investigate how specific types of network connections and relationships moderate the indirect intervention effect, and investigate the effects of the intervention on network position and structure. First-year students at Brown will be enrolled and assessed early in their fall 2016 academic semester. Heavy drinkers in each dormitory who are in the top quartile of betweenness centrality, a social network construct that reflects high connectivity and potential influence, will either receive BMI or serve as controls, according to their dormitory's intervention assignment. All participants will be assessed again 5 and 12 months after baseline to measure changes in behavior and in peer ties. The long-term objective of this research is to understand how peer influences function in social networks in order to leverage those mechanisms to reduce problematic alcohol use in heavy drinking populations.

Conditions

• Alcohol Consumption
• Alcohol Abuse

Interventions

BEHAVIORAL

Single-session alcohol intervention (BMI)

The intervention recipients will receive a 1-hour individual BMI. The BMI will follow the central principles of Motivational Interviewing (MI) and will include all the components determined to be efficacious in existing multi-component BMIs (e.g., personalized feedback on indicators of alcohol-related risk, including signs of alcohol dependence and family history of alcohol risk; normative comparisons of the participant's alcohol consumption with same-sex peers in his/her dorm and throughout campus, and protective behavioral strategies). Additional components will include reviewing the pros and cons of the participant's current pattern of alcohol use, providing estimates of the participant's recent Blood Alcohol Concentration (BAC), and providing information about risks of specific negative outcomes at different levels of drinking. Participants will identify goals for behavior change, and with the counselor will develop a plan to achieve the goals and to address barriers to success.

Sponsors & Collaborators

• Oregon Research Institute

  collaborator OTHER

• Smith College

  collaborator OTHER

• University of Massachusetts, Worcester

  collaborator OTHER

• Brown University

  lead OTHER

Principal Investigators

• Nancy P Barnett, PhD · Brown University

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

PARALLEL

Eligibility

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2016-08-01

Primary Completion

2017-10-31

Completion

2017-10-31