Exploring the mechanistic pathways of how social network influences social norms in adolescent smoking prevention interventions

Felipe Montes*, Martha Blanco, Andrés F. Useche, Sharon Sanchez-Franco, Carlos Caro, Lei Tong, Jie Li, Huiyu Zhou, Jennifer M. Murray, Olga L. Sarmiento, Frank Kee, Ruth F. Hunter

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
61 Downloads (Pure)


We know little about how smoking prevention interventions might leverage social network structures to enhance protective social norms. In this study we combined statistical and network science methods to explore how social networks influence social norms related to adolescent smoking in school-specific settings in Northern Ireland and Colombia. Pupils (12–15 years old) participated in two smoking prevention interventions in both countries (n = 1344). A Latent Transition Analysis identified three groups characterized by descriptive and injunctive norms towards smoking. We employed a Separable Temporal Random Graph Model to analyze homophily in social norms and conducted a descriptive analysis of the changes in the students’ and their friends’ social norms over time to account for social influence. The results showed that students were more likely to be friends with others who had social norms against smoking. However, students with social norms favorable towards smoking had more friends with similar views than the students with perceived norms against smoking, underlining the importance of network thresholds. Our results support the notation that the ASSIST intervention takes advantage of friendship networks to leverage greater change in the students' smoking social norms than the Dead Cool intervention, reiterating that social norms are subject to social influence.
Original languageEnglish
Article number3017
Number of pages16
JournalScientific Reports
Issue number1
Publication statusPublished - 21 Feb 2023


  • Adolescent
  • Child
  • Friends
  • Humans
  • Peer Group
  • Smoking
  • Smoking Prevention
  • Social Networking
  • Social Norms
  • Students


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