The cultural stereotype of infidelity is well entrenched: The lousy, cheating husband who destroys his family makes frequent appearances in the advice columns of women's magazines and is a stock character (usually played opposite a vulnerable Valerie Bertinelli-type) in made-for-TV movies.

Yet the problem of female infidelity is equally serious, particularly when it results in the birth of a child. When a woman strays, how can a man know if the child is really his? Maury Povich has made paternity testing a staple of his TV...