Table 3.
Frequency statistics for self-reports: number of participants responding at each point of each scale.
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mental demand | 0 | 1 | 3 | 8 | 11 | 8 | 12 | 4 | 5 | 4 | 0 |
| Temporal demand | 0 | 0 | 4 | 4 | 4 | 25 | 5 | 5 | 5 | 3 | 1 |
| Performance | 1 | 0 | 0 | 2 | 2 | 3 | 8 | 11 | 11 | 8 | 10 |
| Effort | 0 | 0 | 2 | 7 | 3 | 3 | 15 | 16 | 5 | 5 | 0 |
| Frustration | 2 | 8 | 9 | 8 | 7 | 8 | 3 | 6 | 3 | 2 | 0 |
| KSS | — | 0 | 14 | 12 | 16 | 3 | 8 | 2 | 1 | 0 | — |
| Following coworker | 0 | 0 | 0 | 1 | 0 | 1 | 3 | 9 | 16 | 14 | 12 |
| Coworking history | 40 | 4 | 1 | 1 | 0 | 2 | 0 | 2 | 1 | 1 | 4 |
Self-report items include the Finnish translation of NASA-TLX questionnaire (excluding the ‘Physical demand’ item), rows 1–5; and the Karolinska Sleepiness Scale (KSS), row 6. Participants also reported their common collaboration history (Coworking history) and the collaboration effort during the session (Following coworker), rows 7–8. All the TLX responses were given in 11-point scale from 0 being very low to 10 being very high except “How well did you perform?” (Performance) ranged from 0 failure to 10 perfect. KSS was reported in normal 9-point scale from 1 being extremely alert to 9 extremely sleepy. The coworking history scale ranged from 0 being no collaboration to 10 very much collaboration.