Tell any group of people that stepparents are about one hundred times more likely to fatally abuse their children than are "true" parents and you can't expect an easy audience-especially if you suggest that the key factor could just be the lack of a genetic relationship. So the questions rained down thick and fast on Canadian psychologists Martin Daly and Margo Wilson when they floated these conclusions (gleaned from their twenty years of research) at a Darwin Seminar at the London School of Economics. The questions were as varied as the audience of scientists, historians, undergraduates, and interested passersby that these provocative seminars invariably attract.
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