. Author manuscript; available in PMC: 2016 Mar 3.

Published in final edited form as: Depress Anxiety. 2015 Dec 2;33(3):179–191. doi: 10.1002/da.22455

TABLE 1.

Cross-twin-cross-trait correlations in both groups of twins (MZ and DZ) for each OC dimension

OC dimensions	Zygosity	SP	PD	GAD	BDD	HD
Checking	MZ	0.23	0.21	0.29	0.33	0.15
	DZ	0.16	0.21	0.15	0.07	−0.001
Obsessing	MZ	0.24	0.31	0.34	0.21	0.19
	DZ	0.12	0.09	0.01	0.07	0.01
Washing	MZ	0.23	0.27	0.19	0.23	0.14
	DZ	0.04	0.10	0.10	0.08	0.04
Ordering	MZ	0.16	0.13	0.20	0.19	0.09
	DZ	0.13	0.15	0.18	0.05	0.01

MZ, monozygotic twins; DZ, dizygotic twins; SP, social phobia symptoms, PD, panic disorder symptoms; GAD, generalized anxiety disorder symptoms; BDD, body dysmorphic disorder symptoms; HD, hoarding disorder symptoms.