Table 8.

Classification of behavior change techniques (BCTs) in wearable activity trackers [70].

Behavior Change Technique (BCT)	Presence in Trackers
Self-monitoring of activity levels	✓(All)
Goal setting	✓(6/7)
Feedback on performance	✓(All)
Social support	✓(All)
Reviewing past successes	✓(All)
Setting physical activity goals	✓(6/7)
Focusing on past and future performances	X
Teaching prompts and cues	X
Instructing on how to perform a behavior	X
Barrier identification or problem solving	X
Setting graded tasks	X
Prompting generalization of a target behavior	X
Environmental restructuring	X
Agreement on behavioral contract	X
Use of follow-up prompts	X
Prompt identification as a role model	X
Prompt anticipated regret	X
Fear arousal	X
Prompt self-talk	X
Prompt use of imagery	X
Relapse prevention or coping planning	X
Stress management or emotional control training	X
Motivational interviewing	X
General communication skills training	X