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Table 5 Intraclass correlations (ICC) according to zygosity and estimates of genetic and environmental effects for the five lower order sub-scales that compose the cooperativeness 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
Cooperativeness 0.59 0.40 .38 .21 .41
[.52, .65] [.32, .48] [.19, .57] [.04, .37] [.36, .47]
(CO1) social acceptance vs. social Intolerance 0.40 0.22 0.42 0.00 0.58
[.32, .48] [.12, .31] [.20, .49] [.00, .18] [.51, .66]
(CO2) empathy vs. social disinterest 0.41 0.25 0.30 0.10 0.60
[.31, .47] [.16, .34] [.06, .47] [.00, .29] [.53, .68]
(CO3) helpfulness vs. unhelpfulness 0.35 0.20 0.27 0.07 0.66
[.27, .43] [.11, .29] [.03, .42] [.00, .27] [.58, .74]
(CO4) compassion vs. revengefulness 0.51 0.36 0.36 0.17 0.47
[.44, .58] [.27, .44] [.16, .56] [.00, .33] [.41, .55]
(CO5) integrated conscience vs. self-serving advantage 0.34 0.16 0.33 0.00 0.67
[.25, .42] [.06, .25] [.11, .41] [.00, .18] [.59, .75]
  1. MZ monozygotic, DZ dizygotic