Table 2.

IQ versus adaptive functioning within each group: paired-samples t-test statistics, p-values and effect sizes.

	ASDf n=75	ASDm n=102	TDf n=87	TDm n=91
	Test statistic, p-value, effect size	Test statistic, p-value, effect size	Test statistic, p-value, effect size	Test statistic, p-value, effect size
IQ vs. Communication	t(74)=−10.3, p<.00001†, d=1.19	t(100)=−14.7, p<.00001†, d=1.46	t(86)=−4.05, p<.0005**, d=0.44	t(90)=−10.0, p<.00001†, d=1.05
IQ vs. Daily Living Skills	t(74)=−9.2, p<.00001†, d=1.06	t(101)=−12.5, p<.00001†, d=1.24	t(86)=−4.61, p<.00005†, d=0.50	t(90)=−9.41, p<.00001†, d=0.99
IQ vs. Socialization	t(74)=−11.2, p<.00001†, d=1.30	t(101)=−14.9, p<.00001†, d=1.48	t(86)=−3.76, p<.0005**, d=0.41	t(90)=−7.47, p<.00001†, d=0.79

SD: standard deviation

^an=101.

^**p<.01

^†p<.0001.