Table 2.

Global integration task results by group: M (SD)

	ASD (N = 26)	Control (N = 30)	t	p	Cohen’s δ
Fragmented Picture-Completion Task
Frame number for correct detection (max = 8)	5.35 (0.50)	5.14 (0.45)	1.64	.053c	0.45
Total number of incorrect responses	2.73 (2.68)	1.67 (1.97)	1.71	.09	0.46
Response time for correct detection (s)	24.9 (2.6)	23.4 (2.4)	2.31	.01c	0.61
Im/possible Figures Taska
Sensitivity A′	0.85 (0.15)	0.90 (0.12)	1.65b	.049c	0.23d
Response bias B″	0.28 (0.67)	0.29 (0.63)	0.01b	.99	0.001d
Possible figures proportion of correct detections	0.84 (0.19)	0.91 (0.13)	1.32b	.09c	0.18d
Impossible figures proportion of correct detections	0.74 (0.21)	0.80 (0.22)	1.48b	.07c	0.20d
Response time for possible figures (s)	1.87 (0.60)	1.97 (0.85)	0.05b	.48c	0.01d
Response time for impossible figures (s)	2.35 (0.84)	2.36 (1.02)	0.25b	.40c	0.03d

^aASD n = 25, control n = 28

^bMann–Whitney U tests, z-scores

^cOne-tailed tests

^dNonparametric effect size index $\mathit{\gamma }=\frac{Z}{\sqrt{N}}$