Externalizing Behavior Problems and Discipline Revisited: Nonlinear Effects and Variation by Culture, Context, and Gender

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Abstract
Debate continues regarding the magnitude and importance ofparenting effects on the development of children's externalizing behavior problems, in spite of the evidence that environments (as well as genes) contribute to individual differences in these behaviors. Research has demonstrated an association between harsh physical discipline and child aggression and conduct problems, a likely causal mechanism that probably operates as a shared environmental factor. We offer four hypotheses about the relation between discipline practices and child externalizing problems that may resolve some debate and help lead toward a more comprehensive understanding of how and when discipline practices will make a substantial difference: 1. The association between discipline and child aggression includes a nonlinear component. 2. The parent behavior-child behavior link varies across cultural groups. 3. Parental discipline effects on children vary according to the context of the broader parent-child relationship. 4. The discipline effect is maximized in same-gender parent-child dyads. Discussion focuses on the role of children's mental representations of discipline experiences as a mediator of discipline effects, and research implications with respect to sampling, measurement, and analytic strategies are noted.