Table 3.
Descriptive data for the Memory for Intentions Screening Test (N = 67).
| MIST variable | Mean | SD | Median | IQR | Range |
|---|---|---|---|---|---|
| Summary score | 43.1 | 4.8 | 42.0 | 39.0, 48.0 | 30.0, 48.0 |
| Time-based | 6.7 | 1.2 | 7.0 | 6.0, 8.0 | 4.0, 8.0 |
| Event-based | 7.6 | 0.6 | 8.0 | 7.0, 8.0 | 6.0, 8.0 |
| Verbal | 7.5 | 0.8 | 8.0 | 7.0, 8.0 | 4.0, 8.0 |
| Action | 6.9 | 1.1 | 7.0 | 6.0, 8.0 | 5.0, 8.0 |
| 2-min | 7.8 | 0.7 | 8.0 | 8.0, 8.0 | 4.0, 8.0 |
| 15-min | 6.6 | 1.3 | 7.0 | 6.0, 8.0 | 3.0, 8.0 |
| Total errors | 1.3 | 1.3 | 1.0 | 0.0, 2.0 | 0.0, 5.0 |
| PM errors | 0.3 | 0.6 | 0.0 | 0.0, 1.0 | 0.0, 2.0 |
| TS errors | 0.3 | 0.6 | 0.0 | 0.0, 1.0 | 0.0, 3.0 |
| LC errors | 0.6 | 1.0 | 0.0 | 0.0, 1.0 | 0.0, 4.0 |
| LT errors | 0.1 | 0.4 | 0.0 | 0.0, 0.0 | 0.0, 2.0 |
| PLO errors | 0.0 | 0.0 | 0.0 | 0.0, 0.0 | 0.0, 0.0 |
| R errors | 0.0 | 0.0 | 0.0 | 0.0, 0.0 | 0.0, 0.0 |
| Recognition | 7.8 | 0.5 | 8.0 | 8.0, 8.0 | 6.0, 8.0 |
| Retrieval index | 1.2 | 1.1 | 1.0 | 0.0, 2.0 | −1.0, 3.0 |
| Distractor words | 20.5 | 7.7 | 18.0 | 16.0, 26.0 | 10.0, 42.0 |
| 24-hour probe | 0.7 | 0.9 | 0.0 | 0.0, 2.0 | 0.0, 2.0 |
Note. IQR = interquartile range; LC = loss of content; LT = loss of time; MIST = Memory for Intentions Screening Test; NR = no response; PLO = place losing omission; R = random; SD = standard deviation; TS = task substitutions.