Dynamic social network analysis of a brief alcohol intervention trial in heavy-drinking college students shows spillover effects.
alcohol use
brief alcohol intervention
social network
spillover effect
Journal
Alcohol, clinical & experimental research
ISSN: 2993-7175
Titre abrégé: Alcohol Clin Exp Res (Hoboken)
Pays: United States
ID NLM: 9918609780906676
Informations de publication
Date de publication:
19 Jan 2024
19 Jan 2024
Historique:
revised:
28
11
2023
received:
21
06
2023
accepted:
29
11
2023
medline:
19
1
2024
pubmed:
19
1
2024
entrez:
19
1
2024
Statut:
aheadofprint
Résumé
Heavy-drinking college students tend to have close social networks, and there is theoretical and empirical support for the idea that behavior change can spread through those networks via close ties. The objective of this research was to determine whether intervention-induced behavior change in a subset of heavy drinkers in a sociometric (whole) college class-year social network is transmitted to other heavy drinkers in the network, resulting in reduced behavioral risk and change in network ties. We conducted a controlled trial in which most of a first-year college class (N = 1236; 56.9% female) was enrolled, with alcohol use and social network ties measured early in each of three semesters. Following a baseline assessment, the network was divided into two groups, brief motivational intervention (BMI) and natural history control (NHC) according to dormitory residence location. A subset of heavy drinkers in each group was selected, and those in the BMI group received an in-person intervention. Using stochastic actor-oriented modeling, we found a significant tendency for participants in the BMI group to shed ties with individuals with similar drinking behaviors between the first and second semesters, relative to the NHC group. Furthermore, heavy drinkers with reciprocal ties to intervention recipients in the BMI group showed a significant reduction in drinks per week. Individual alcohol interventions appear to have effects both on behavior and network connections among individuals who did not receive the intervention. Continued research is needed to identify the optimal conditions for the diffusion of behavior change.
Sections du résumé
BACKGROUND
BACKGROUND
Heavy-drinking college students tend to have close social networks, and there is theoretical and empirical support for the idea that behavior change can spread through those networks via close ties. The objective of this research was to determine whether intervention-induced behavior change in a subset of heavy drinkers in a sociometric (whole) college class-year social network is transmitted to other heavy drinkers in the network, resulting in reduced behavioral risk and change in network ties.
METHODS
METHODS
We conducted a controlled trial in which most of a first-year college class (N = 1236; 56.9% female) was enrolled, with alcohol use and social network ties measured early in each of three semesters. Following a baseline assessment, the network was divided into two groups, brief motivational intervention (BMI) and natural history control (NHC) according to dormitory residence location. A subset of heavy drinkers in each group was selected, and those in the BMI group received an in-person intervention.
RESULTS
RESULTS
Using stochastic actor-oriented modeling, we found a significant tendency for participants in the BMI group to shed ties with individuals with similar drinking behaviors between the first and second semesters, relative to the NHC group. Furthermore, heavy drinkers with reciprocal ties to intervention recipients in the BMI group showed a significant reduction in drinks per week.
CONCLUSIONS
CONCLUSIONS
Individual alcohol interventions appear to have effects both on behavior and network connections among individuals who did not receive the intervention. Continued research is needed to identify the optimal conditions for the diffusion of behavior change.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIAAA NIH HHS
ID : K01AA025994
Pays : United States
Organisme : NIAAA NIH HHS
ID : R01AA023522
Pays : United States
Informations de copyright
© 2023 Research Society on Alcohol.
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