Table 1.

Correlations and descriptives for study variables

	Correlation with DASa	Mean	SD	Within Trait Twin Correlations		Cross Trait, Within Twin Correlations				Cross Trait, Cross-Twin Correlations
				MZ	DZ	MZ		DZ		MZ		DZ
						T1	T2	T1	T2	T1-T2	T2-T1	T1-T2	T2-T1
Relationship Satisfaction (DAS)
Raw Scale Score	-	44.64	6.08	-	-	-	-	-	-	-	-	-	-
Z-score composite	-	0.00	7.25	0.19	0.02	-	-	-	-	-	-	-	-
Postive Emotionality	0.23	122.77	13.14	0.49	0.16	0.29	0.25	0.35	0.19	0.10	0.18	0.06	−0.11
Well-being	0.38	56.25	7.51	0.37	0.24	0.43	0.40	0.40	0.32	0.14	0.23	0.03	−0.07
Social Potency	0.04	44.44	8.86	0.53	0.18	0.04	0.09	0.19	0.04	−0.01	0.05	0.10	−0.19
Achievement	0.09	51.78	8.00	0.46	0.19	0.12	0.06	0.17	0.09	0.09	0.09	−0.01	−0.10
Social Closeness	0.23	54.87	8.35	0.40	0.23	0.24	0.24	0.18	0.18	0.11	0.11	0.10	−0.03
Negative Emotionality	−0.33	78.33	13.33	0.43	0.21	0.35	0.30	0.19	0.31	0.18	0.09	0.02	0.04
Stress Reaction	−0.27	39.49	9.25	0.37	0.15	0.29	0.25	0.22	0.32	0.09	0.01	−0.01	0.02
Alienation	−0.29	29.11	7.86	0.44	0.22	0.30	0.29	0.19	0.27	0.23	0.10	0.07	−0.05
Aggression	−0.27	30.25	7.47	0.49	0.25	0.32	0.23	0.20	0.16	0.19	0.14	−0.10	0.07
Constraint	0.12	144.99	15.10	0.45	0.28	0.08	0.06	0.19	0.01	0.07	0.03	−0.08	0.08
Control	0.15	52.78	7.36	0.26	0.16	0.14	0.09	0.16	0.11	0.10	0.03	−0.13	0.14
Harm Avoidance	0.06	52.32	10.97	0.49	0.26	−0.01	0.04	0.04	−0.03	0.03	0.02	0.03	0.07
Traditionalism	0.09	52.95	7.03	0.59	0.49	0.07	0.08	0.22	0.02	0.02	−0.02	0.00	−0.05
Absorption	−0.03	37.92	9.35	0.44	0.11	−0.03	0.00	−0.04	0.07	−0.00	−0.07	−0.02	−0.02

Note. The correlations in the first column are given for the Relationship Satisfaction (Dyadic Adjustment Scale, DAS) z-score composite sum and the raw personality scale scores from the Multidimensional Personality Questionnaire (MPQ). For the 11 MPQ primary scales, Means and SDs are for the raw scores, ranging from 18–72. Scores for Positive Emotionality, Negative Emotionality, and Constraint are optimally weighted composites of raw primary-scale scores derived from factor analysis. Sample size for the correlations with relationship satisfaction, means and SDs is 1629 (from 676 MZ and 381 DZ twin pairs). Twin correlations (N=572) are Pearson correlations, using the age- and gender-regressed z-score for Relationship Satisfaction and the age- and gender-regressed z-scores for all 14 personality scales; these z-scores are used in the biometric moderation models. T1-T2 indicates Twin 1’s DAS score and Twin 2’s personality score, and T2-T1 indicates Twin 2’s DAS score and Twin 1’s personality score. Note than twin correlations for Negative Emotionality and its subscales are positive, because they have been reversed for use in the biometric moderation models, but should be interpreted in the same direction as shown in the first column.

^aSignificant correlations shown in bold. Correlations > .06 significant at p<.01; correlations > .09 significant at p<.0001.