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How smartphone restrictions in schools can limit adolescent gambling and other risk behaviours

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Author(s): Chen, Szu-Chia ; Huang, Tzu-Fu ; Chang, Kevin ; Chang, Fong-Ching ; Chiang, Shawn C. ; Chiu, Chiung-Hui ; Chen, Ping-Hung ; Miao, Nae-Fang ; Chuang, Hung-Yi

Journal: Computers in Human Behavior

Year Published: 2026

Date Added: April 30, 2026

Schools across the globe are implementing different types of policies on smartphone use. In this study, the researchers propose that under Routine Activity Theory, school policies that restrict smartphone use act as a form of guardianship that reduce opportunities for exposure to online risks and involvement in risk behaviours. A total of 3,158 high school students in Taiwan reported their perceptions of smartphone policies at their schools. They then completed self-report measures on online gambling, loot box engagement, and other risk behaviours and exposures.

Students who perceived their schools had no policies on smartphone use were exposed to online risks to a greater degree, including greater smartphone use, loot box engagement, and online marketing of e-cigarettes and non-alcoholic beer. These students were more likely to engage in risk behaviours like online gambling, cyberbullying, and alcohol and tobacco use. Boys were more likely to gamble online and to engage in other risk behaviours. The findings of this study suggest smartphone policies in schools can protect adolescents from online gambling and other risk behaviours.


Citation: Chen, S.-C., Huang, T.-F., Chang, K., Chang, F.-C., Chiang, S. C., Chiu, C.-H., Chen, P.-H., Miao, N.-F., & Chuang, H.-Y. (2026). Association between school phone restriction policies and adolescents’ cyberbullying, gambling, and substance use behaviors. Computers in Human Behavior, 177, 108898. https://doi.org/10.1016/j.chb.2025.108898

Article DOI: https://doi.org/10.1016/j.chb.2025.108898

Keywords: adolescents ; cell phones ; cyberbullying ; gambling ; high school ; schools ; substance use

Topics: Children and Youth ; Comorbidities ; Priority Populations ; Substance Use

Conceptual Framework Factors:   Psychological - Comorbid Disorders ; Exposure - Accessibility ; Social - Education System ; Social - Social Demographics ; Psychological - Lifespan Development ; Gambling Exposure ; Social Factors

Study Design: Observational: Cross-sectional

Geographic Coverage: Taiwan

Study Population: Adolescents ages 16–18 years currently enrolled in high school in Taiwan (N = 3,158)

Sampling Procedure: Schools were sampled in proportion to their size. A total of 35 schools across six cities and counties in Taiwan were chosen. Three to five classes in each school were randomly selected. Students in these classes were then asked to complete the survey.

Study Funding:

This study was funded by a research grant from Taiwan’s Ministry of Science and Technology.

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