Mean

SD

Range

Skewness

Kurtosis

ω

N

Maternal problems in reciprocal social behavior

13.25

1.84

11 - 23

1.14

5.03

0.54

769

Maternal postpartum depressive symptoms

3.13

3.57

0 - 21

1.99

7.87

0.90

710

Infanile aggression

1.88

1.79

0 - 8

0.96

3.42

0.65

769