Comparing social norms for adolescent smoking and vaping behaviours using game theory based experiments and self-reports: insights from the MECHANISMS Study

Jennifer M. Murray*, Erik O. Kimbrough, Erin L. Krupka, Abhijit Ramalingam, Rajnish Kumar, Laura Dunne, Linda Bauld, Olga L. Sarmiento, Laurence Moore, Huiyu Zhou, Felipe Montes, Sharon C. Sánchez-Franco, Shannon C. Montgomery, Christopher Tate, Frank Kee, Ruth F. Hunter

*Corresponding author for this work

Research output: Contribution to journalMeeting abstractpeer-review

Abstract

Background: Many adolescent smoking prevention programs target social norms, typically evaluated with self-report, susceptible to social desirability bias. An alternative approach with limited application in public health is to use experimental norms elicitation methods.

Methods: Using the Mechanisms of Networks and Norms Influence on Smoking in Schools (MECHANISMS) study baseline data, from 12–13 year old school pupils (n=1656) in Northern Ireland and Bogotá, we compare two methods of measuring injunctive and descriptive smoking/ vaping norms. These include: (1) incentivized experiments, eliciting norms using monetary payments; (2) self-report scales. Confirmatory factor analysis (CFA) examined whether the methods measured the same construct. Paths from exposures (country, sex) to norms, and associations of norms with smoking behaviour/intentions were inspected in structural models.

Results: Second-order CFA showed latent variables representing experimental and survey norms measurements were measuring the same underlying construct of anti-smoking/vaping norms. Adding covariates into structural models showed significant paths from country to norms (second-order anti-smoking/vaping norms latent variable: standardized factor loading [β]=0.30, standard error [SE]=0.09, p < 0.001), and associations of norms with self-reported anti-smoking behaviour (β = 0.40, SE = 0.04,p < 0.001), anti-smoking intentions (β = 0.42, SE = 0.06, p < 0.001), and objectively measured smoking behaviour (β = −0.20, SE = 0.06, p = 0.001).Conclusions and implications: We provide evidence for the construct validity of behavioural economic methods of eliciting adolescents moking/vaping norms. These methods seem to index the same underlying phenomena as commonly-used self-report scales. Our research uses innovative, transdisciplinary insights from game theory about norms elicitation that will have future relevance for other health-related behaviours.

Original languageEnglish
Pages (from-to)S145-S146
Number of pages2
JournalInternational Journal of Behavioral Medicine
Volume28
Issue numberSuppl. 1
Publication statusPublished - 05 Jun 2021
Event6th International Congress of Behavioural Medicine 2021 - Glasgow, United Kingdom
Duration: 07 Jun 202111 Jun 2021
https://www.delegate-reg.co.uk/icbm2021/
https://doi.org/10.1007/s12529-021-09997-7

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