Table 4.
Changes in CPT-II raw and standardized (T) scores
| Statistically rare RAW score changes |
Statistically rare T-score changes |
||
|---|---|---|---|
| Conners’ CPT-II T-Scores |
Expected % (# of participants) |
Observed % (# of participants) |
Observed % (# of participants) |
| Omissions | 10 (3.7) | 59.4 (22***) | 29.7 (11***) |
| Commissions | 10 (3.7) | 0 (0) | 16.2 (6) |
| Variability | 10 (3.7) | 94.6 (35***) | 16.2 (6) |
| Hit Reaction Time | 10 (3.7) | 18.9 (7) | 16.2 (6) |
| Attentiveness | 10 (3.7) | 62.1 (23***) | 29.7 (11***) |
n = 37. Table depicts the expected versus observed proportion of statistically rare changes in CPT-II raw scores and T-scores occurring between Times 1 and 2. For each variable it was expected that 10 of participants (n = 3.7) would generate CPT-II score discrepancies between Times 1 and 2 that exceeded the RCI-derived confidence interval (90). The two columns on the right depict the observed proportions of participants with statistically rare changes in raw score and T-score.
***
χ2 = p <.001. CPT = Continuous Performance Test, Attentiveness = Detectability.