work has convincingly demonstrated that the importance of genetic influences on CP change dramatically from childhood through adolescence (Lyons et al. 1995; Burt & Klump, 2009; Burt & Neiderhiser, 2009). It thus stands to reasons that the constituent pieces of these heritability estimates (which include most G × E and rGE; Purcell, 2002) may also shift during this developmental period. Future work should examine more directly the possibility that, much like rGE, G × E may be influenced in meaningful ways by the challenges and experiences characteristic of particular developmental periods.
