Structural Equation Models in Human Behavior Genetics

Abstract

That IQ is a highly heritable trait has been widely reported. Rather less well known are recent reports in major scientific journals such as those announcing that the heritability of controllable life events is 53 percent among women and 14 percent among men (Saudino et al. 1997), while the heritabilities of inhibition of aggression, openness to experience, and right-wing authoritarianism are respectively 12, 40, and 50 percent (Pedersen et al. 1989; Bergeman et al. 1993; McCourt et al. 1999). It seems that milk and soda intake are in part heritable, but not the intake of fruit juice or diet soda (de Castro 1993).