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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