Riding other people's coattails.

Another interesting bit from Psychological Science:

Two laboratory experiments and one dyadic study of ongoing relationships of romantic partners examined how temporary and chronic deficits in self-control affect individuals’ evaluations of other people. We suggest that when individuals lack self-control resources, they value such resources in other people. Our results support this hypothesis: We found that individuals low (but not high) in self-control use information about other people’s self-control abilities when judging them, evaluating other people with high self-control more positively than those with low self-control. In one study, participants whose self-control was depleted preferred people with higher self-control, whereas nondepleted participants did not show this preference. In a second study, we conceptually replicated this effect while using a behavioral measure of trait self-control. Finally, in a third study we found individuals with low (but not high) self-control reported greater dependence on dating partners with high self-control than on those with low self-control. We theorize that individuals with low self-control may use interpersonal relationships to compensate for their lack of personal self-control resources.