Table 3.

Twin Correlations for Negative Urgency, Negative Affect, and Dysregulated Eating

Variables	MZ twins (N = 237–244)	DZ twins (N = 186–196)	Z	p
Intraclass correlations
Neg. Urgency	.39 (.29, .48)	−.03 (−.17, .12)	4.48	<.001
Neg. Affect	.55 (.46, .64)	.24 (.09, .37)	3.84	<.001
Binge Eating	.42 (.29, .52)	.02 (−.12, .17)	4.28	<.001
Emotional Eating	.41 (.29, .53)	.28 (.13, .42)	1.50	.07
Cross-twin cross-trait correlations
Neg. Urgency-Neg. Affect	.25 (.13, .38)	.07 (−.08, .21)	1.89	.03
Neg. Urgency-Binge Eating	.27 (.15, .39)	.02 (−.11, .15)	2.64	.004
Neg. Urgency-Emotional Eating	.17 (.06, .28)	.08 (−.05, .22)	0.93	.18
Neg. Affect-Binge Eating	.21 (.07, .34)	.14 (.01, .27)	0.73	.23
Neg. Affect-Emotional Eating	.35 (.20, .48)	.29 (.16, .42)	0.67	.25

Note. MZ = monozygotic; DZ = dizygotic. Z = Fisher r-to-z transformation test of equality. p value for one-tailed test examining whether the MZ correlation is larger than the DZ correlation. 95% confidence intervals for correlations presented in parentheses.