Table 2

Behavioural concepts and corresponding behaviour change intervention components, mapped to the BCTT

Concept to illicit behaviour changeBehaviour change intervention component developed for the trial*Mapped to the BCTT41
Incentivising behaviours and activities rather than outcomes is more effective for sustained behaviour change than rewarding outcomes33 40 43Enhanced goal setting process, including establishing a ‘big wish’ (the overall outcome), then deciding on small achievable weekly goals which were re-set and stretched each week (with modified SMART goals handout)Goals and planning (1.4 action planning)
Note: 8.3 Habit formation and 8.7 Graded tasks may also apply
Rewards scheme linked to weekly nutrition and exercise goal attainmentReward and threat (10.1 material reward (behaviour)
People are motivated to complete a goal when they can see their progress44Group ‘Goals and Rewards Tracker’Feedback and monitoring (2.5 monitoring of outcomes of behaviour without feedback)
Small and frequent rewards can increase task perseverance44Low-value weekly rewardsReward and threat (10.1 material reward (behaviour)
An implementation intention can help people achieve a goal 45–47Modified ‘Goals and Rewards Contract’ (between parent/carer and child)Goals and planning—(1.8 behavioural contract)
Lucky draw-style rewards may increase effectiveness of incentives17 22 25Prize draw incentive 6 months after community weight management programmeReward and threat—(anticipation of future reward—not categorised by the app used to code)
Text message prompts can improve health behaviours48SMS scheme linked to 6-month prize drawFeedback and monitoring (10.4 social reward)
  • *Corresponds with inputs (material resources) and activities in the logic model.

  • BCTT, Behaviour Change Technique Taxonomy.