Age at test | |||
---|---|---|---|
8 years | 14–15 years | p | |
*Paired t test. | |||
†Wilcoxon signed rank test. | |||
WISC-R full scale IQ, mean (SD) | 104 (18) | 95 (18) | <0.0001* |
WISC subscales, mean (SD) | |||
Performance IQ | 98 (16) | 95 (21) | NS |
Picture completion | 11 (3) | 9 (3) | <0.0001* |
Block design | 10 (3) | 9 (3) | <0.0001* |
Verbal IQ | 109 (19) | 95 (18) | <0.0001* |
Similarities | 12 (4) | 10 (3) | <0.0001* |
Vocabulary | 12 (3) | 10 (4) | <0.0001* |
VMI, mean (SD) | 42 (28) | 54 (38) | NS |