WISC-IV Subtest

Groups

AD Group

NC Group

Difference between groups

M

SD

M

SD

t-test

p value

Verbal Comprehension Index^a

101.75

18.90

108.26

11.58

1.30

0.201^c

Perceptual Reasoning Index^a

107.35

15.12

108.58

13.22

0.270

0.789

Working Memeroy Index^a

105.60

16.21

104.95

14.00

−0.134

0.894

Processing Speed Index^a

91.20

13.20

87.95

14.52

−0.733

0.468

Full Scale Index^a

103.10

15.02

104.26

8.96

0.295

0.770^c

Block Design^b

12.15

2.64

11.37

2.60

−0.929

0.359

Similarities^b

12.10

3.07

12.42

2.52

0.355

0.724

Digit Span^b

12.60

3.51

12.21

3.20

−0.361

0.720

Picture Concepts^b

9.45

3.72

11.16

3.27

1.59

0.137

Coding^b

8.30

3.52

6.84

2.73

−1.43

0.159

Vocabulary^b

9.20

4.20

11.05

2.63

1.65

0.107^c

Letter-Number Sequencing^b

9.45

2.60

9.79

2.70

0.400

0.692

Matrix Reasoning^b

11.50

2.80

11.63

3.23

0.136

0.893

Comprehension^b

7.65

3.54

11.26

2.28

3.76*

0.001

Symbol Search^b

8.20

2.66

8.79

2.78

0.676

0.503