Table 1.
Means of mean reaction times for responses to stimulus 2 (RTR2 in ms) and SE in parenthesis, as a function of group (ASD children vs. control—typically developing children), the relationship between the responses (R1 and R2), and the relationship between the stimuli features (S1 and S2) for shape and color
| Group | Response repeated | Response alternated | Partial repetition costs | ||
|---|---|---|---|---|---|
| Shape repeated | Shape alternated | Shape repeated | Shape alternated | ||
| RTs (ms) | |||||
| ASD | 518 (20) | 649 (24) | 591 (24) | 549 (24) | 86 |
| Control | 576 (20) | 635 (24) | 616 (24) | 568 (24) | 53 |
| Errors (%) | |||||
| ASD | 5.7 (0.8) | 18.1 (1.9) | 14.5 (1.6) | 4.5 (0.8) | 11.2 |
| Control | 1.3 (0.8) | 6.1 (1.9) | 9.6 (1.6) | 1.6 (0.8) | 6.4 |
| Group | Response repeated | Response alternated | Partial repetition costs | ||
|---|---|---|---|---|---|
| Color repeated | Color alternated | Color repeated | Color alternated | ||
| RTs (ms) | |||||
| ASD | 580 (22) | 587 (21) | 575 (24) | 566 (23) | 8 |
| Control | 600 (22) | 611 (21) | 592 (24) | 592 (23) | 5 |
| Errors (%) | |||||
| ASD | 11.4 (1.3) | 12.4 (1.4) | 10.2 (1.2) | 8.7 (1.2) | 1.2 |
| Control | 3.6 (1.3) | 3.8 (1.4) | 7.3 (1.2) | 4.0 (1.2) | 1.8 |
The rightmost column gives the partial repetition costs (see footnote 1), which differed significantly in response-shape between the two groups, p < .005, both in reaction times and error rates