The Oxford Handbook of Parenting and Moral Development provides a collection of state-of-the-art theories and research on the role that parents play in moral development. Contributors who are leaders in their fields take a comprehensive, yet nuanced approach to considering the complex links between parenting and moral development.

There are three concerns regarding Rachlin's altruism model. First, proximal causal mechanisms such as those identified by cognitive neuroscientists and behavioral neuropharmacologists are not emphasized. Second, there is a lack of clear testable hypotheses. And third, extreme forms of altruism are emphasized rather than common forms. We focus on an overarching theme – proximal mechanisms of individual differences in altruism.