Cognitive inflexibility in Japanese adolescents and adults with autism spectrum disorders

Table 3 Correlation between intelligence quotient and performance on the Wisconsin Card Sorting Test in subjects with autism spectrum disorders and controls

	ASD (n = 34)						Control (n = 34)
	FIQ		VIQ		PIQ		FIQ		VIQ		PIQ
	r	P value	r	P value	r	P value	r	P value	r	P value	r	P value
CA	0.24	0.18	0.26	0.20	0.15	0.260	0.22	0.220	0.19	0.29	0.20	0.27
TE	-0.26	0.15	-0.19	0.28	-0.31	0.084	-0.30	0.089	-0.28	0.12	-0.25	0.16
%PEM	-0.26	0.14	-0.23	0.20	-0.26	0.140	-0.31	0.082	-0.32	0.073	-0.22	0.22
%PEN	-0.41	0.019a	-0.42	0.015a	-0.32	0.068	-0.31	0.076	-0.28	0.11	-0.27	0.14

^aP < 0.05 vs control, Pearson’s r was used to correlate performance scores with intelligence quotient for each variable. ASD: Autism spectrum disorders; CA: Categories achieved; TE: Total number of errors; %PEM: Percentages of perseverative errors of the Milner type; %PEN: Percentages of perseverative errors of the Nelson type; IQ: Intelligence quotient; FIQ: Full-scale IQ; PIQ: Performance IQ; VIQ: Verbal IQ.