Cinderella effect

In evolutionary psychology, the Cinderella effect is the phenomenon of higher incidence of different forms of child abuse and mistreatment by stepparents than by biological parents. It takes its name from the fairy tale character Cinderella, which is about a girl who is mistreated by her stepsisters and stepmother. Evolutionary psychologists describe the effect as a byproduct of a bias towards kin, and a conflict between reproductive partners of investing in young that are unrelated to one partner.

This article is about parenting. For the effect with the same name in semiconductors, see floating body effect. For the effect in sports, referring to a Cinderella team, see Flutie effect.
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