Table 1 Descriptive statistics of the academic measures and IQ per dataset.

From: Investigating the association between variability in sulcal pattern and academic achievement

  

Arithmetic ability

Symbolic number ability (reaction time)

Symbolic number ability (accuracy)

Reading ability

IQ (WISC-III or Raven)

Polspoel et al.64

M

100.6

778.3

98.1

61.8

44.2

SD

16.9

123.5

1.9

10.5

10.7

Minimum

73.0

567.7

93.1

39.0

24.0

Maximum

136.0

1058.89

100.0

90.0

69.0

Bellon et al.62

M

99.6

761.6

96.2

60.0

36.4

SD

19.1

127.3

2.5

11.9

7.8

Minimum

65.0

561.9

91.7

37.0

14.0

Maximum

142.0

1088.42

100.0

87

49.0

Both datasets

M

100.1

769.5

97.2

60.9

40.1

SD

17.9

125.0

2.4

11.2

10.0

Minimum

65.0

562.0

91.7

37.0

14.0

Maximum

142.0

1077.4

100

90.0

69.0