NPR recounts how a modest scientific conclusion about classical music's effect on spatial reasoning led to a nation obsessed with making their unborn babies listen to Mozart. "The newest issue of the journal Intelligence has the largest review ever of research on the so-called Mozart Effect, the popular idea that listening to classical music can enhance the intelligence of people in general and babies in particular. The review is titled 'Mozart Effect, Schmozart Effect,' which should give you some idea of its conclusion: there ain't no such thing."