Society Best predictor of divorce? Age when couples cohabit, study says.

A new study suggests the age when couples start cohabiting – whether married or unmarried – correlates with divorce rates, adding new nuance to studies about cohabitation and marriage.

J Pat Carter/AP

For years, social scientists have tried to explain why living together before marriage seemed to increase the likelihood of a couple divorcing. Now, new research released by the nonpartisan Council on Contemporary Families gives an answer: