Table 2 Behavioral results
From: Impaired neural networks for approximate calculation in dyscalculic children: a functional MRI study
Conditions | Number of trials, Mean (S.D.) | 3rd grade children | 6th grade children | |||
|---|---|---|---|---|---|---|
| Â | Control children | Dyscalculic children | Control children | Dyscalculic children | Control children | Dyscalculic children |
Approximate Calculation | 72.8 (13.2) | 70.2 (12.2) | Â | Â | Â | Â |
Reaction time (ms) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 1659 (660) | 1467 (523) | 891 (352) | 929 (351) |
Accuracy rate (%) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 79.5 (4.9) | 68 (17.0) | 89.5 (4.6) | 86 (9.2) |
Exact calculation | 73.6 (16.1) | 72.2 (14.0) | Â | Â | Â | Â |
Reaction time (ms) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 1707 (763) | 1499 (494) | 768 (370) | 872 (426) |
Accuracy rate (%) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 73.7 (8.2) | 60 (17.2) | 87.9 (8.3) | 84 (10.2) |
Magnitude comparison | 127.3 (15.5) | 121.5 (14.7) | Â | Â | Â | Â |
Reaction time (ms) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 931 (254) | 964 (288) | 702 (176) | 827 (189) |
Accuracy rate (%) | Â | Â | Â | Â | Â | Â |
   Mean (S.D.) |  |  | 97.2 (2.0) | 95 (1.9) | 96.7 (1.3) | 97 (1.6) |