Abstract
High levels of divorce and remarriage within the United States potentially constitute a structural and theoretical problem for the sociobiological tenets of inclusive fitness and paternal investment. The marital histories of many United States men appear to be antithetical to an effective strategy in nurturing their children, i.e., their genes. However, an empirical analysis of marriage, divorce, and fertility by age and gender indicates that these men are following an adequate, if complex, strategy more consonant than dissonant with sociobiological theory.

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