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Table 2 Distribution of IQ scores on the full and sub-scales of the WISC-IV (N = 30)

From: Effect of a classroom-based intervention on the social skills of pupils with intellectual disability in Southwest Nigeria

WISC scales Mean scaled score Mean IQ score Maximum score Minimum score
Full IQ 19.5 ± 7.9 44.0 ± 4.6 56 40
Verbal comprehension index 5.2 ± 2.1 50.3 ± 5.1 61 45
Working memory index 3.0 ± 1.4 52.2 ± 3.3 65 50
Perceptual reasoning index 8.9 ± 4.4 56.7 ± 8.8 79 45
Processing speed index 3.2 ± 1.8 53.7 ± 5.2 70 50