Prenuptial Cohabiting Can Spoil Marriage

Couples who shack up before tying the knot are more likely to get divorced than their counterparts who don't move in together until marriage, a new study suggests.

Upwards of 70 percent of U.S. couples are cohabiting these days before marrying, the researchers estimate. The study, published in the February issue of the Journal of Family Psychology, indicates that such move-ins might not be wise.

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Rhoades and her colleagues did telephone surveys with more than 1,000 married men and women between the ages of 18 and 34, who had been married 10 years or fewer. Survey questions included measures of relationship satisfaction, dedication to one another, level of negative communication and sexual satisfaction. To measure the potential of a couple to divorce, participants were asked "Have you or your spouse ever seriously suggested the idea of divorce?"

Those who moved in with a mate before engagement or marriage reported significantly lower quality marriages and a greater potential for split-ups than other couples. For instance, about 19 percent of those who cohabited before getting engaged had ever suggested divorce compared with just 12 percent of those who only moved in together after getting engaged and 10 percent of participants who did not cohabit prior to the wedding bells.

In another study led by Rhoades published in the February issue of the Journal of Family Issues, cohabiting couples ranked a list of reasons for cohabitation. More than 60 percent of participants ranked spending more time together as the number-one reason for moving in, followed by nearly 19 percent who put "it made most sense financially" at the top of their list, and 14 percent ranking "I wanted to test out our relationship before marriage" highest.

Jeanna Bryner is managing editor of Scientific American. Previously she was editor in chief of Live Science and, prior to that, an editor at Scholastic's Science World magazine. Bryner has an English degree from Salisbury University, a master's degree in biogeochemistry and environmental sciences from the University of Maryland and a graduate science journalism degree from New York University. She has worked as a biologist in Florida, where she monitored wetlands and did field surveys for endangered species, including the gorgeous Florida Scrub Jay. She also received an ocean sciences journalism fellowship from the Woods Hole Oceanographic Institution. She is a firm believer that science is for everyone and that just about everything can be viewed through the lens of science.