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. 2019 May 24;49(4):366–375. doi: 10.1007/s10519-019-09960-z

Table 3.

Trait correlations of family interaction from 12 to 17 years of age and correlations between additive genetic, shared environmental and unique environmental variance components explaining these trait correlations with 95% confidence intervals (CI)

Trait correlation Additive genetic correlation Shared environmental correlation Unique environmental correlation
Trait 1 Trait 2 r 95% CI rA 95% CI % of the trait correlation explained rC 95% CI % of the trait correlation explained rE 95% CI % of the trait correlation explained
Cross-age correlations
 Boys
  Support12 Support14 0.42 0.38, 0.45 0.14 − 0.61, 0.53 9 0.96 0.71, 1.00 77 0.15 0.05, 0.26 14
  Support12 Support17 0.25 0.21, 0.29 0.06 − 0.25, 0.30 9 1.00 0.64, 1.00 85 0.04 − 0.06, 0.15 6
  Support14 Support17 0.41 0.37, 0.44 0.68 0.38, 1.00 56 0.82 0.23, 1.00 41 0.03 − 0.09, 0.14 3
  Tensions12 Tensions14 0.33 0.29, 0.36 0.64 0.22, 1.00 40 0.63 0.36, 1.00 57 0.02 − 0.07, 0.12 3
  Tensions12 Tensions17 0.17 0.13, 0.22 − 0.30 − 1.00, 0.07 − 24 0.52 0.30, 1.00 81 0.14 0.05, 0.22 43
  Tensions14 Tensions17 0.32 0.28, 0.36 0.30 − 1.00, 1.00 16 0.82 0.49, 1.00 58 0.15 0.04, 0.25 26
 Girls
  Support12 Support14 0.39 0.35, 0.43 0.43 0.00, 0.91 29 0.67 0.46, 0.92 66 0.06 − 0.05, 0.16 5
  Support12 Support17 0.28 0.24, 0.32 0.09 − 0.45, 0.94 9 0.78 0.38, 1.00 78 0.10 − 0.01, 0.21 13
  Support14 Support17 0.42 0.38, 0.45 0.34 0.09, 0.59 34 0.97 0.52, 1.00 52 0.17 0.06, 0.26 14
  Tensions12 Tensions14 0.31 0.27, 0.34 0.43 0.00, 1.00 28 0.54 0.26, 0.79 74 − 0.02 − 0.13, 0.09 − 2
  Tensions12 Tensions17 0.19 0.15, 0.23 0.41 0.14, 0.92 38 0.35 0.17, 0.65 75 − 0.06 − 0.16, 0.03 − 13
  Tensions14 Tensions17 0.32 0.28, 0.36 0.14 − 0.77, 0.44 13 0.71 0.45, 1.00 64 0.17 0.07, 0.28 23
Cross-trait correlations
 Boys
  Support12 Tensions12 0.41 0.38, 0.45 0.64 0.29, 0.96 37 0.62 0.46, 0.82 52 0.12 0.02, 0.21 11
  Support14 Tensions14 0.46 0.42, 0.49 0.59 0.10, 1.00 28 0.78 0.53, 1.00 51 0.20 0.10, 0.30 21
  Support17 Tensions17 0.54 0.50, 0.57 1.00 0.71, 1.00 62 0.38 − 0.42, 0.96 8 0.31 0.22, 0.40 30
 Girls
  Support12 Tensions12 0.44 0.41, 0.47 0.98 0.70, 1.00 45 0.51 0.38, 0.62 53 0.02 − 0.07, 0.11 2
  Support14 Tensions14 0.61 0.58, 0.63 0.79 0.49, 1.00 35 0.76 0.59, 0.97 44 0.35 0.26, 0.44 21
  Support17 Tensions17 0.65 0.63, 0.68 0.90 0.68, 1.00 51 0.90 0.56, 1.00 27 0.36 0.28, 0.45 22