Table 2 Social Cognitive Theory construct mapping for the SHED-IT interventions
Intervention component | Group allocation | SCT construct | Behaviour change techniques |
|---|---|---|---|
| Â | Â | Â | * Provide information about behaviour-health link |
| Â | Â | * Observational learning | * Use of identifiable role model to model positive behaviours |
WL DVD | Resources/Online | * Outcome expectations | * Verbal persuasion from credible information source |
| Â | Â | * Behavioural capability | * Prompt self-monitoring of behaviours |
| Â | Â | * Self-efficacy | * Prompt specific goal setting |
| Â | Â | Â | * Information on consequences |
| Â | Â | * Behavioural capability | * Provide information about behaviour-health link |
| Â | Â | * Outcome expectations | * Facilitate mastery by encouraging gradual behaviour change |
WL Handbook | Resources/Online | * Perceived barriers | * Prompt self-monitoring of behaviours |
| Â | Â | * Goal setting & intention | * Prompt specific goal setting (implementation intention) |
| Â | Â | * Self-efficacy | * Barrier identification |
WL Support Book | Resources/Online | * Self-monitoring * Goal setting * Goal setting * Social support * Intentions * Self-efficacy | * Prompt specific goal setting * Prompt self-monitoring and recording of behaviours (weight chart, waist chart, step count chart, healthy lifestyle diary) * Identification of social support strategies & encourage WL strategies that involve the support of others * Identification of social support strategies & encourage WL strategies that involve the support of others |
Self-monitoring items (kJ counter book, pedometer, tape measure) | Â | * Self-monitoring | * Facilitate self-monitoring of behaviours |
| Â | Resources/Online | * Goal setting | * Prompt specific goal setting (implementation intention) |
| Â | Â | * Self-monitoring | * Prompt self-monitoring of behaviour |
Access to study website & website user guide | Online only | * Behavioural capability | * Prompt goal setting |
| Â | Â | * Goal setting | * Increase knowledge and skills relating to key WL behaviours |
| Â | Â | * Self-efficacy | * Detailed instruction of essential website features |
| Â | Â | * Social support | * Provide information about behaviour-health link |
| Â | Â | * Behavioural capability | * Provide social support and general encouragement |
7 individualised feedback sheets | Online only | * Outcome expectations | * Prompt self-monitoring |
| Â | Â | * Self-efficacy | * Prompt review of goals & social support strategies |