Table 1 Between-group differences in demographic variables, estimated IQ and BMI

Daughters

Age

17.54 (2.34)

16.77 (2.06)

1.55

.18

Education

10.81 (1.31)

10.69 (1.24)

.13

.72

IQ-similarities

10.35 (2.75)

10.84 (2.17)

.62

.38

IQ-block design

10.52 (3.25)

11.22 (2.66)

.88

.35

daughters' BMI

17.92 (1.83)

20.76 (2.64)

25.24

.0001

Mothers

Age

48.47 (5.53)

48.88 (5.53)

.11

.75

Education

14.81 (2.40)

15.81 (1.99)

3.39

.07

IQ-similarities

10.53 (2.11)

11.18 (1.96)

1.66

.20

IQ-block design

10.59 (2.96)

11.27 (2.23)

.78

.38

Fathers

Age

51.03 (5.10)

51.24 (6.20)

.02

.88

Education

15.00 (2.79)

15.72 (2.13)

1.40

.24

IQ-similarities

11.48 (2.00)

11.09 (2.28)

1.28

.27

IQ-block design

11.26 (3.00)

12.12 (2.45)

1.60

.20

Parents' marital status

χ² = 1.37

.50

Married

93.8%

90.9%

Divorced

6.2%

6.1%

Single

.00%

.00%