Skip to main content

Advertisement

Table 4 Intraclass correlations (ICC) according to zygosity and estimates of genetic and environmental effects for the five lower order sub-scales that compose the self-directedness scale of the Temperament and Character Inventory [95 % confidence interval]

From: The genetic and environmental structure of the character sub-scales of the temperament and character inventory in adolescence

  MZ DZ A C E
(n = 423 pairs) (n = 408 pairs) Additive genetics Common environment Unique environment
Self-directedness 0.52 0.36 .29 .22 .49
[.44, .58] [.27, .44] [.09, .50] [.04, .38] [.43, .56]
(SD1) responsibility vs. blaming 0.45 0.21 0.42 0.01 0.57
[.37, .52] [.12, .31] [.19, .50] [.00, .21] [.50, .64]
(SD2) purposefulness vs. lack of goal direction 0.30 0.22 0.16 0.14 0.70
[.21, .38] [.12, .31] [.00, .38] [.00, .31] [.62, .79]
(SD3) resourcefulness vs. inertia 0.40 0.23 0.32 0.07 0.61
[.32, .48] [.13, .32] [.08, .46] [.00, .27] [.54, .69]
(SD4) self-acceptance vs. self-striving 0.48 0.21 0.47 0.00 0.53
[.41, .55] [.11, .30] [.30, .53] [.00, .14] [.47, .60]
(SD5) self-actualizing vs. bad habits 0.33 0.29 0.11 0.23 0.66
[.23, .41] [.20, .38] [.00, .35] [.03, .36] [.58, .75]
  1. MZ monozygotic, DZ dizygotic