This interactive article from the Why Files reports on a recent study by Daniela O'Neill, professor of psychology at the University of Waterloo in Ontario, which examined the relationship between language ability and skills in mathematics. The author discusses the findings and points to some interesting directions for further investigation. In particular, "the study suggested that certain narrative skills could predict math skills on a later test, but it did not explain the relationship." The full article on the study is in a journal First Language, which is available only by subscription.