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. Author manuscript; available in PMC: 2012 Sep 17.
Published in final edited form as: Am Nat. 2011 May;177(5):605–616. doi: 10.1086/659629

Table 2.

Correlations between family members for each trait after controlling for age and sex effects.

BMI Height Education Income Religiosity Attitudes Neuroticism Extraversion Psychoticism Harm
Avoidance
Novelty
Seeking
Reward
Dependence
Persistence
MZF twins   .69 (.01) .84 (.01) .64 (.01) .32 (.03) .62 (.01) .64 (.01)   .42 (.02)   .45 (.02) .35 (.02)   .42 (.02)   .40 (.02)   .37 (.02)   .35 (.02)
MZM twins   .71 (.02) .87 (.01) .69 (.02) .47 (.04) .62 (.02) .59 (.02)   .36 (.03)   .51 (.03) .37 (.03)   .44 (.03)   .40 (.03)   .37 (.03)   .35 (.03)
DZF twins   .37 (.03) .48 (.02) .47 (.02) .32 (.05) .50 (.02) .51 (.02)   .17 (.03)   .17 (.03) .23 (.03)   .14 (.03)   .12 (.03)   .16 (.03)   .14 (.03)
DZM twins   .41 (.04) .41 (.04) .48 (.03) .28 (.06) .50 (.04) .48 (.04)   .10 (.05)   .17 (.05) .19 (.05)   .15 (.05)   .12 (.05)   .13 (.05)   .11 (.05)
DOS twins   .25 (.03) .47 (.02) .41 (.02) .10 (.04) .39 (.03) .40 (.03)   .12 (.03)   .14 (.03) .09 (.03)   .11 (.03)   .14 (.03)   .08 (.03)   .10 (.03)
Parents   .18 (.03) .22 (.03) .44 (.02) .70 (.01) .62 (.02)   .10 (.03)   .09 (.03) .14 (.03)   .06 (.03)   .09 (.03)   .08 (.03)   .08 (.03)
Partners   .12 (.02) .20 (.02) .45 (.01) .08 (.02) .73 (.01) .62 (.01)   .06 (.02)   .04 (.02) .16 (.02)   .03 (.02)   .04 (.02)   .02 (.02)   .03 (.02)
Father-daughter   .20 (.03) .39 (.02) .26 (.02) .46 (.02) .39 (.02)   .14 (.03)   .19 (.02) .04 (.03)   .15 (.03)   .21 (.03)   .14 (.03)   .09 (.03)
Mother-daughter   .20 (.02) .46 (.02) .25 (.02) .46 (.02) .43 (.02)   .16 (.02)   .18 (.02) .11 (.02)   .14 (.02)   .13 (.02)   .16 (.02)   .08 (.02)
Father-son   .15 (.04) .42 (.03) .26 (.03) .47 (.02) .41 (.02)   .15 (.03)   .17 (.03) .13 (.03)   .11 (.03)   .16 (.03)   .12 (.03)   .11 (.03)
Mother-son   .17 (.03) .44 (.02) .19 (.03) .43 (.02) .39 (.02)   .10 (.03)   .16 (.03) .07 (.03)   .08 (.03)   .14 (.03)   .10 (.03)   .09 (.03)
Father-son’s partner −.02 (.07) .15 (.04) .15 (.03) .34 (.03) .24 (.04)   .07 (.06)   .07 (.05) .09 (.05)   .03 (.06) −.01 (.05) −.01 (.05)   .10 (.06)
Mother-son’s partner   .05 (.05) .10 (.05) .15 (.03) .32 (.03) .24 (.04)   .06 (.06) −.06 (.05) .11 (.05)   .01 (.05)   .00 (.05)   .06 (.05)   .03 (.05)
Father-daughter’s partner   .06 (.04) .13 (.04) .22 (.03) .40 (.02) .21 (.03) −.03 (.05)   .00 (.04) .01 (.04)   .02 (.05) −.01 (.04)   .01 (.05) −.03 (.04)
Mother- daughter’s partner   .06 (.03) .11 (.03) .19 (.03) .35 (.02) .23 (.03)   .01 (.04)   .03 (.04) .07 (.04) −.02 (.04)   .01 (.04)   .04 (.04)   .02 (.04)
MZF twin-cotwin’s M partner   .09 (.03) .18 (.03) .38 (.02) .05 (.03) .45 (.02) .37 (.02)   .01 (.03)   .04 (.03) .07 (.03)   .04 (.03)   .07 (.03)   .01 (.03)   .03 (.03)
MZM twin-cotwin’s F partner   .10 (.04) .18 (.03) .33 (.02) .06 (.04) .43 (.03) .42 (.03)   .03 (.05)   .03 (.05) .09 (.05)   .02 (.05)   .09 (.05)   .01 (.05)   .03 (.05)
DZF twin-cotwin’s M partner   .04 (.05) .11 (.04) .27 (.03) .06 (.04) .39 (.02) .32 (.03) −.01 (.05) −.03 (.05) .02 (.05) −.01 (.05) −.03 (.05) −.10 (.05) −.04 (.05)
DZM twin-cotwin’s F partner −.03 (.06) .23 (.07) .31 (.03) .08 (.05) .40 (.04) .32 (.05)   .15 (.07) −.03 (.06) .02 (.07)   .00 (.07) −.12 (.06)   .00 (.07)   .08 (.06)
DZM twin-OS cotwin’s M partner   .02 (.08) .21 (.06) .31 (.04) .06 (.05) .34 (.04) .34 (.05) −.03 (.07) −.06 (.06) .04 (.07)   .02 (.07) −.09 (.07) −.05 (.07)   .06 (.07)
DZF twin-OS cotwin’s F partner   .11 (.06) .10 (.05) .32 (.03) .02 (.06) .26 (.03) .34 (.05)   .06 (.07) −.09 (.06) .18 (.06)   .10 (.06)   .01 (.06) −.04 (.06)   .03 (.06)

Note: Values in parentheses are standard errors. Correlations between partner of twin 1 and partner of twin 2 are presented in Table 4.

M = male, F = female, OS = opposite-sex, MZ = monozygotic, DZ = dizygotic.

These correlations are used in the test of social homogamy.