. Author manuscript; available in PMC: 2017 Mar 6.

Published in final edited form as: Child Dev. 2016 Jun 13;87(6):1940–1955. doi: 10.1111/cdev.12561

Table 4.

Twin Similarity in Temperament Profile Membership and Factor Score

Twin Profile Concordance			MZ			DZ

Regulated, Typical Reactive			Twin 2			Twin 2

			0	1		0	1

	Twin 1	0	195 (67%)	6 (2%)	0	265 (56%)	38 (8%)
	Twin 1	1	7 (2%)	83 (29%)	1	41(9%)	132 (28%)

Well-Regulated, Positive Reactive			Twin 2			Twin 2
			0	1		0	1
	Twin 1	0	169 (58%)	21 (7%)	0	282 (59%)	59 (12%)
	Twin 1	1	18 (6%)	83 (29%)	1	66 (14%)	69 (15%)

Regulated, Surgent			Twin 2			Twin 2
			0	1		0	1
	Twin 1	0	206 (71%)	18 (6%)	0	338 (71%)	57 (12%)
	Twin 1	1	19 (7%)	48 (16%)	1	59 (12%)	22 (5%)

Dysregulated, Negative Reactive			Twin 2			Twin 2
			0	1		0	1
	Twin 1	0	252 (87%)	6 (2%)	0	343 (72%)	46 (10%)
	Twin 1	1	7 (2%)	26 (9%)	1	34 (7%)	53 (11%)

Twin Intraclass Correlations for Factor Score			.81			.40

Note: MZ = monozygotic, DZ=dizygotic.