Table 4.
Frequency of PSD features.
| Feature | App with feature | % apps with feature |
|---|---|---|
| Reduction | 26 | 86.7% |
| Tunneling | 11 | 36.7% |
| Tailoring | 12 | 40.0% |
| Personalization | 16 | 53.3% |
| Self-monitoring | 21 | 70.0% |
| Simulation | 1 | 3.3% |
| Rehearsal | 12 | 40.0% |
| Total primary task support features across all apps | 99 | |
| Praise | 7 | 23.3% |
| Rewards | 7 | 23.3% |
| Reminders | 15 | 50.0% |
| Suggestion | 16 | 53.3% |
| Similarity | 5 | 16.7% |
| Liking | 6 | 20.0% |
| Social role | 2 | 6.7% |
| Total dialogue support features across all apps | 58 | |
| Social learning | 3 | 10.0% |
| Social comparison | 2 | 6.7% |
| Normative influence | 1 | 3.3% |
| Social facilitation | 5 | 16.7% |
| Cooperation | 0 | 0% |
| Competition | 0 | 0% |
| Recognition | 0 | 0% |
| Total social support features across all apps | 11 | |
| Trustworthiness | 7 | 23.3% |
| Expertise | 7 | 23.3% |
| Surface credibility | 10 | 33.3% |
| Real-world feel | 1 | 3.3% |
| Authority | 2 | 6.7% |
| Third party endorsements | 0 | 0% |
| Verifiability | 0 | 0% |
| Total credibility support features across all apps | 27 |