Model fitting results for Trust-in-Others (upper part) and Trust-in-Self (lower part) within an extended twin-family design.

Notes: −2LL = minus 2 log likelihood; par = number of estimated parameters; cs = number of constraints in the model, χ2 = Chi square (difference in −2LL); Δdf = difference in degrees of freedom; p = p-value; AIC = Akaike’s Information Criterion; BIC = Bayesian Information Criterion; DIC = Deviance Information Criterion; O = others; S = self; r(GE) refers to the correlation between A and CT, if CT is eliminated from the model, r(GE) has to be fixed to zero as well; **if A is eliminated from the model, D and r(GE) will be estimated at zero as well. Models in which the effects of D are estimated but the effects of A are fixed to zero are biologically implausible [16], preferred models are printed in bold font.