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Table 1 Exemplary intervention elements of the mobile phone-based life-skills training

From: Efficacy of a mobile phone-based life-skills training program for substance use prevention among adolescents: study protocol of a cluster-randomised controlled trial

Concept derived from social cognitive theory

Content category

Self-management skills

Social skills

Substance use resistance skills

Outcome expectations

Individually tailored information on pros of using self-management skills to cope with stress.

Tailored information on the pros of applying social skills, e.g., making requests.

Information on pros of resisting alcohol, including social norms within an age- and gender-specific reference group.

Self-efficacy

Videos demonstrating easily applicable strategies to cope with negative emotions.

Contest on creating a bubble text on refusing an unreasonable request within a given situation presented on a picture.

Creation of if-then-plan for resisting invitation for smoking marijuana

Observational learning

Interactive message contest on stress regulation strategies.

Video showing exemplary behaviour on individually poorly developed social skills.

Video podcast showing peer models who successfully refused cigarette smoking.

Facilitation

Creation of if-then-plans for coping with the currently most severely affecting stress situation.

Podcasts introducing conversational skills or strategies for making requests.

Contest on creating a bubble text on refusing an alcoholic drink at a party presented on a given picture.

Self-regulation

Monitoring of and feedback on individual emotions.

Monitoring of and feedback on progress of individual social skills.

Monitoring of and feedback on individual alcohol use.