Are stepparents more likely to kill their children?
Whereas young children incurred about seven times higher rates of physical abuse in step-plus-genetic-parent home than in two-genetic-parent homes, the differential in fatal abuse was on the order of 100-fold.
Source: “Violence Against Stepchildren” from Current Directions in Psychological Science (June 1996)
This is a well documented phenomenon known as The Cinderella Effect. It’s been called “one of the poster-children of evolutionary psychology.”
Join over 151,000 readers. Get a free weekly update via email here.