Sex differences on the WISC-IV in Taiwan and Germany

The sex differences on the standardization sample of the Wechsler Intelligence Scale for Children - Fourth Edition (WISC-IV) in Taiwan (N = 968, age 6-16, 49.9% female) are reported for the Full Scale IQ, the four Index IQs and the subtests and compared with those in the German standardization sample. There was no statistically significant difference in the Full Scale IQ in either Germany or Taiwan. Sex differences were very small in both samples, but their direction in the four Index IQs and the subtests was generally similar in the two samples notably in the higher scores obtained by males on the Verbal Comprehension Index IQ and the Perceptual Reasoning Index IQ and the higher score obtained by females on the Processing Speed Index IQ. Relative to females, males obtained higher scores in the German sample than in the Taiwan sample. In the Taiwan sample, males had greater variance than females on 16 measures and females had greater variance than males on three measures.