"A child is one hundred times more likely to be abused or killed by a stepparent than by a genetic parent, say two scientists in this startling book. Martin Daly and Margo Wilson show that the mistreatment to stepchildren, long a staple of folktales, has a solid basis in fact. Daly and Wilson apply the perspective of evolutionary psychology to investigate why stepparenthood is different from genetic parenthood and why steprelationships succeed or fail."--Jacket.

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