Social cognitive factors related to physical activity and sleep hygiene behaviours
| Construct | Items | Response anchors |
| Physical Activity | ||
| Self-efficacy | 10 | (1) not at all confident (5) extremely confident |
| Perceived behavioural capacity | 3 | (1) never (5) always |
| Outcome expectations | 5 | (1) strongly disagree (7) strongly agree |
| Outcome expectancies | 5 | (1) not at all important (4) extremely important |
| Environment | 3 | (1) strongly disagree (5) strongly agree |
| Social support | 2 | (1) strongly disagree (5) strongly agree |
| Goals | 2 | (1) no, not really (7) strongly intend; and (1) not at all motivated (7) extremely motivated |
| Action planning | 4 | (1) no detailed plans (7) detailed plans |
| Sleep Hygiene Behaviours (k=9) | ||
| Self-efficacy | 9 | (1) not at all confident (5) extremely confident |
| Perceived behavioural capacity | 9 | (1) never (5) always |
| Outcome expectations | 9 | (1) strongly disagree (7) strongly agree |
| Outcome expectancies | 9 | (1) not at all important (4) extremely important |
| Environment | 9 | (1) strongly disagree (5) strongly agree |
| Social support | 9 | (1) strongly disagree (5) strongly agree |
| Goals | 9 | (1) no, not really (7) strongly intend and |
| Action planning | 9 | (1) no detailed plans (7) detailed plans |
Each item per construct will refer to one of nine different sleep hygiene behaviours.