Table 3 Comparisons of IQ dimensions and neurocognitive tasks, and post-hoc analyses

Wechsler scale

Full scale IQ

101.33

17.895

98.47

16.367

91.58

14.535

4.089

0.129

VCI

104.02

18.503

103.62

18.184

102.26

16.931

0.425

0.809

PRI

103.38

17.308

104.20

16.280

98.89

15.376

1.132

0.568

WMI

94.58

14.094

91.38

13.202

84.89

11.818

6.430

.040*

0.470

0.051

.012*

PSI

98.58

16.354

93.82

15.686

82.68

15.567

10.686

.005*

0.177

.027*

.001**

TMT

TMT A

34.87

14.385

34.71

10.509

47.89

14.476

12.679

.002*

0.601

.002*

 < .001**

TMT B

74.79

26.899

77.67

36.662

96.53

62.180

3.975

0.137

TMT B-A

39.88

21.825

44.78

29.460

58.32

46.386

3.216

0.200

BVN

12–18

Lexical Denomination

89.575

32.721

90.718

14.796

84.379

19.907

3.590

0.166

Forward verbal digit span

93.929

14.038

90.673

18.895

84.311

8.365

8.394

.15*

0.469

.022*

.004*

Backward verbal digit span

99.502

17.606

93.407

12.401

89.432

13.575

6.650

.036*

0.164

0.146

.011*

Corsi Block-tapping test

99.079

17.519

92.021

21.672

90.197

19.117

3.035

0.219

Selective auditory

85.217

26.391

74.838

41.761

75.974

31.133

2.760

0.252

Visual attention

109.187

14.590

107.896

14.331

93.874

28.510

7.984

.018*

0.469

.026*

.005*

Phonemic fluency

100.604

19.661

102.031

18.224

94.689

26.958

2.937

0.230

Categorial fluency

95.542

19.110

95.584

15.670

81.768

16.946

8.714

.013*

0.914

.006*

.007*

Elithorn perceptual maze

97.985

20.333

93.673

25.238

80.605

31.616

2.862

0.239

ROCF

Copy

32.630

4.170

32.468

3.580

30.579

4.605

4.72

0.94

Drawing from memory

22.100

6.434

22.521

6.994

17.289

6.449

8.57

.014*

0.753

.005*

.009*