Based on the idea of inertia, you might expect that controlling for some aspects of constraint would lower the degree to which cohabitation was associated with aggression; but living together remained associated with aggression with aggressive relationships continuing.
Further, we found that living together was strongly associated with the likelihood that relationships with a history of aggression would continue, even while taking into account measures of constraint, overall relationship quality, and dedication.
And people already at greater risk are more likely to cohabit in the ways associated with the most risk (e.g., with a number of partners and/or before there is a serious, mutual commitment to marriage).
We believe that cohabitation is a particular problem for some people because it increases the odds that a relationship already select for greater risk will continue—or continue longer than it otherwise would have.
What we call dedication often goes by the simple name of “commitment” in much of the literature where commitment is measured relatively well.
and sometimes they reflect options that are limited or have become more so.