Table 4.
Mean percentages of correct, incorrect, and “timed out” responses made for each NANA task in each of the three testing periods of study 2
| Period 1 | Period 2 | Period 3 | Friedman χ2 (d.f. = 2) | ||
|---|---|---|---|---|---|
| Mean (range) | Mean (range) | Mean (range) | |||
| Shopping List Task | |||||
| Mean % of correct responses | 98.36 (71–100) | 98.13 (86–100) | 98.37 (90–100) | 1.96, p = .38 | |
| Mean % of incorrect responses | 1.42 (0–22) | 1.23 (0–7) | 1.39 (0–10) | 0.56, p = .77 | |
| Mean % of timed out trials | 0.22 (0–7) | 0.64 (0–13) | 0.25 (0–2) | 2.48, p = .33 | |
| Squares Task | |||||
| Mean % of correct responses | 99.55 (89–100) | 99.89 (97–100) | 99.51 (96–100) | 5.69, p = .056 | |
| Mean % of incorrect responses | 0.42 (0–11) | 0.08 (0–2) | 0.34 (0–3) | 4.00, p = .13 | |
| Mean % of timed out trials | 0.04 (0–1) | 0.04 (0–1) | 0.15 (0–4) | 0.67, p > .99 | |