surprising finding from quantitative genetics is that many environmental measures widely used in the behavioural sciences show genetic influence (Jaffee & Price, 2007; Kendler & Baker, 2007). This finding suggests that people create their own experiences in part for genetic reasons, known as genotype-environment correlation because it refers to experiences that are correlated with genetic propensities. In addition, the effects of the environment can depend on genetics and the effects of genetics can depend on the environment, called genotype-environment interaction, genetic sensitivity to environments. Investigating the developmental interface between nurture and nature requires the incorporation of specific measures of the environment to assess nurture and will be greatly enhanced by including specific genes to assess nature (Caspi, Sugden, Moffitt, Taylor, Craig et al., 2003).
