monitoring. For mother's negativity and control, primarily nonpassive rGE correlations were suggested (Neiderhiser et al., 2004). (ii) Evocative/reactive rGE can arise when a specific child characteristic elicits a particular response from the environment. For example, aggressive children tend to elicit more negative affect and harsh discipline from their parents (Ge et al., 1996; O'Connor et al., 1998). In a more recent study, using the classical twin design the association between parental criticism and adolescent antisocial behavior was found to be entirely genetically influenced. Approximately half of the genetic contribution to this association was explained by early adolescent aggression. Thus, child aggression seemed to elicit negative parenting followed by adolescent antisocial behavior, indicating an evocative rGE (Narusyte et al., 2006). (iii) Active rGE is defined as the process whereby an individual actively seeks out environmental situations that are more closely matched to the person's genotype. Active rGE has been suggested in adolescent drinking behavior, specifically among girls (Loehlin, 2010). Ifthe assumption of no G × E correlation is violated, heritability estimates for aggressive behavior in twin studies could include both additive genetic effects and the effects of G × E correlation (i.e., heritability estimates are inflated). Apart from these specific examples
