The question is as horrifying as it is important to ask: Why are a rising number of French women killing their newborn babies? Finding the answer has become a matter of urgency following the discovery on Wednesday of eight infants allegedly smothered to death and buried by their mother in northern France. And with that case marking at least the fifth instance of multiple infanticide reported in France since 2003, it has become vital for the nation to confront the phenomenon that appears to be behind it all: a mental condition known as pregnancy denial.Experts explained those cases as resulting from pregnancy denial, an often misunderstood and minimized condition. According to Michel Delcroix, a former gynecologist who served as a court expert in the Courjault trial and others involving pregnancy issues, pregnancy denial is a quasi-schizophrenic condition in which women either don't realize or cannot accept that they are with child — not even enough to have an abortion. Whether these women are afflicted with the condition before they deliver or as they're suddenly giving birth, Delcroix explains, the psychological denial is so strong that they refuse to believe they're pregnant even when the reality confronts them.