164 Chapter 6 Table 6.1 Demographics and clinical data Total Males Females Gender differences 1 Mean (SD) n = 107 n = 48 n = 59 Age 48 (5.50) 50 (5.97) 47 (4.75) .005 Autism spectrum traits 2 54.25 (10.48) 57.92 (11.01) 51.27 (9.08) <.001 Trait empathy 3 Empathic concern 18.08 (4.92) 15.79 (4.29) 19.95 (4.63) <.001 Perspective taking 17.27 (4.54) 15.94 (4.67) 18.36 (4.15) .006 WAIS-IV 4 Block design 10.92 (3.16) 11.73 (3.09) 10.23 (3.09) .020 Vocabulary 11.68 (2.49) 11.73 (2.60) 11.64 (2.60) .857 Average score 11.30 (2.15) 11.73 (2.28) 10.93 (1.99) .071 Note. WAIS-IV, Wechsler Adult Intelligence Scale IV (Wechsler, 2012). 1 p-values were obtained using independent samples t-test comparisons between males and females. 2 Autism spectrum traits were assessed with the 28-item version of the Autism-spectrum Quotient (AQ-short; Hoekstra et al. (2011)). 3 Trait empathy was assessed with the Interpersonal Reactivity Index (IRI; De Corte et al. (2007)). 4 Data on intellectual functioning (WAIS-IV) were missing or unreliable for 11 participants resulting in n = 96 for this measure.
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