Then I read a section in one of the books that featured a long line of photos of a woman making various expressions—transitioning slowly from a sad face to an angry one. A study at the University of Wisconsin showed these pictures to children who had not experienced abuse, then to children who had. The abused kids thought that more of these photos presented an angry threat than the children from normal homes did. They were hyperalert to even the smallest twinges in facial expressions.
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