Advantages of the multiple case series approach to the study of cognitive deficits in autism spectrum disorder.

Furthermore, if one defines any performance either above or below two standard deviations of the control mean as unusual for each measure, the difference between the number of “unusual observations” for the ASD group and controls was highly significant (median ASD = 8.0; median controls = 3.0; U = 83.5, p = 0.0004).

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