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. Author manuscript; available in PMC: 2015 Mar 20.
Published in final edited form as: J Child Psychol Psychiatry. 2013 Nov 21;55(9):1033–1041. doi: 10.1111/jcpp.12171

Table 1.

Descriptive statistics and covariance matrix for CAI Coherence for MZ and DZ twins

MZ
DZ
Twin 1 Twin 2 Twin 1 Twin 2
Descriptive statistics
Mean 5.15 5.17 5.22 5.20
SD 1.74 1.77 1.79 1.64
N 288 288 261 261
Covariance matrix
Twin 1 3.02 0.42b 3.22 0.20b
Twin 2 1.28a 3.12 0.59a 2.70
a

Covariance.

b

Correlation.