Table 5.

Means and SDs of the three age groups in the autism and control groups on the cognitive tests

M + SD	Autism group				Control group
Age group	8–12	13–20	21+	Total	8–12	13–20	21+	Total
Verbal absurdities	8.16 ± 7.7	10.21 ± 4.3	10.85 ± 4.1	9.68 ± 5.7	11.11 ± 2.3	14.16 ± 1.0	13.45 ± 2.9	13.03 ± 2.5
Tower of hanoi	161.31 ±44.5	178.16 ± 73.7	169.0 ± 60.4	169.06 ± 59.4	143.0 ± 51.9	110.12 ± 33.9	106.55 ±44.1	118.8 ±45.2
WCST PE	16.93 ± 12.8	14.84 ± 10.9	16.39 ± 10.4	16.10 ± 11.3	11.84 ± 7.2	7.43 ± 4.9	7.98 ± 5.6	8.91 ± 6.1
Category errors	41.66 ± 22.6	39.53 ± 21.2	40.64 ± 18.7	40.66 ± 20.6	41.61 ± 13.2	28.82 ± 14.6	41.83 ± 29.0	36.69 ± 20.6
HVOT	54.14 ± 6.6	49.26 ± 5.2	51.5 ± 8.3	51.72 ± 7.0	52.58 ± 4.7	47.76 ± 2.9	46.6 ± 3.5	48.83 ± 4.4
Picture absurdities	23.73 ± 2.7	27.42 ± 3.4	26.8 ± 3.2	25.89 ± 3.5	24.79 ± 2.2	28.72 ± 2.0	30.0 ± 2.3	27.94 ± 3.0
TPT	945.78 ± 314.7	790.88 ± 366.2	885.31 ± 543.3	877.71 ± 415.3	916.41 ± 312.0	585.76 ± 177.6	723.34 ± 283.3	726.91 ± 287.7
20 Q	14.14 ± 12	18.89 ± 8.9	16.74 ± 9.9	16.51 ± 10.4	19.47 ± 8.5	23.72 ± 7.3	22.35 ± 7.9	22.03 ± 7.3
Trails B	43.68 ± 27.4	50.89 ± 28.0	77.10 ± 26.3	56.89 ± 30.5	38.37 ± 14.3	39.12 ± 17.6	55.7 ± 14.3	44.08 ± 17.3