Table 2 Abused children’s IQ and behavior problems (n = 265)

Maternal minor physical abuse

 Yes

105.30 ± 11.64

100.77 ± 11.48

50.92 ± 10.25

51.31 ± 9.36

50.23 ± 8.74

49.99 ± 10.60

51.20 ± 10.89

50.54 ± 10.44

 No

106.71 ± 12.62

101.30 ± 11.40

47.85 ± 8.76

48.35 ± 7.97

49.56 ± 7.84

47.58 ± 9.31

48.62 ± 8.80

50.64 ± 10.16

 Cohen’s d

0.12

0.05

0.32*

0.34*

0.08

0.24^†

0.26^†

0.01

Paternal minor physical abuse

 Yes

105.327 ± 11.83

100.29 ± 11.44

49.31 ± 10.09

51.69 ± 9.52

49.61 ± 8.54

48.73 ± 9.94

51.65 ± 9.00

49.77 ± 9.62

 No

106.23 ± 12.11

101.36 ± 11.33

49.49 ± 9.37

48.50 ± 8.00

50.19 ± 8.16

48.92 ± 10.17

48.72 ± 10.93

51.30 ± 10.80

 Cohen’s d

0.08

0.09

0.02

0.37*

0.07

0.02

0.30^†

0.15

Maternal severe physical abuse

 Yes

103.24 ± 12.52

99.74 ± 11.60

50.96 ± 9.82

51.35 ± 8.75

51.85 ± 10.20

50.96 ± 11.59

50.59 ± 9.70

52.50 ± 9.25

 No

106.93 ± 11.91

101.47 ± 11.37

48.84 ± 9.53

49.31 ± 8.77

49.25 ± 7.50

48.05 ± 9.36

49.66 ± 10.05

49.96 ± 12.78

 Cohen’s d

0.31^†

0.15

0.22

0.23

0.32^†

0.29^†

0.09

0.25

Paternal severe physical abuse

 Yes

106.19 ± 12.09

101.05 ± 11.73

49.21 ± 9.03

52.32 ± 9.69

52.16 ± 10.40

48.82 ± 9.92

51.63 ± 10.63

52.23 ± 12.02

 No

105.96 ± 12.19

101.03 ± 11.35

49.42 ± 9.83

49.03 ± 8.37

49.19 ± 7.41

48.76 ± 10.07

49.35 ± 9.69

50.08 ± 9.65

 Cohen’s d

0.02

0.001

0.02

0.38^*

0.36^†

0.007

0.23

0.21