Table 2:
Children’s performance on various metrics from different versions of the GNG/CPT task
| GNG/CPT Task version | ||||
|---|---|---|---|---|
| 1. 3 – 4 years (n = 134) |
2. 5 – 6 years (n = 135) |
3. 7+ years (n = 183) |
p | |
| GNG Phase | ||||
| M (range) Accuracy | .82 [.45, .98] |
.80 [.46, .98] |
.73 [.41, .98] |
<.001 |
| M (range) d’ | 1.84 [−.53, 3.79] |
1.68 [.04, 3.79] |
1.24 [−.07, 3.99] |
<.001 |
| M (range) Commission errors | .33 [.00, 1.00] |
.28 [.00, .70] |
.33 [.00, .72] |
.05 |
| M (range) Omission errors | .14 [.00, .67] |
.17 [.00, .67] |
.25 [.01, .71] |
<.001 |
| M (range) RT | 792.65 [469, 1171] |
497.70 [365, 638] |
356.57 [256, 433] |
<.001 |
| M (range) RT Variability | 254.80 [119, 430] |
119.64 [75, 186] |
76.73 [41, 115] |
<.001 |
| CPT Phase | ||||
| M (range) Accuracy | .81 [.28, 1.00] |
.87 [.61, 1.00] |
.83 [.62, .98] |
<.001 |
| M (range) d’ | 2.23 [−.61, 4.12] |
2.36 [.35, 4.35] |
1.74 [−.43, 3.97] |
<.001 |
| M (range) Commission errors | .18 [.00, .96] |
.07 [.00, .42] |
.07 [.00, .33] |
<.001 |
| M (range) Omission errors | .22 [.00, 1.00] |
.27 [.00, .95] |
.44 [.00, .96] |
<.001 |
| M (range) RT | 904.17 [418, 1301] |
570.95 [443, 665] |
405.68 [278, 490] |
<.001 |
| M (range) RT Variability* | 234.72 [0, 497] |
97.56 [41, 200] |
63.58 [5, 196] |
<.001 |
*
3 children who completed Version 1, 1 child who completed Version 2 and 2 children who completed Version 3 were missing RT variability scores due to insufficient responses in this phase of the task.