Table 3 Distribution of the studied cases according to the Standford Binet IQ test (n = 55)

Normal IQ (n = 19):

Group I

Excellent (IQ: 111–120)

1 (1.8%)

Average (IQ: 89–110)

8 (14.5%)

Below average (IQ: 79–88)

10 (18.2%)

Abnormal IQ (n = 36):

Group II

Slow learner (IQ: 68–78)

19 (34.5%)

Mild MR (IQ: 52–67)

13 (23.6%)

Moderate MR (IQ: 36–51)

4 (7.3%)