Codependency-typified by extreme reliance on relationships, particularly wi
th exploitive individuals, as a means of personal fulfillment-is a personal
ity syndrome believed to develop, in part, from dysfunctional parenting. Ba
sed on this characterization, it was reasoned that codependency would be as
sociated with inadequate parental bonding. It was also reasoned that codepe
ndent persons would be more attentive and responsive to an exploitive than
to a nurturant other, whereas the opposite was expected for noncodependent
persons. Support was found for both of these predictions: Questionnaire dat
a revealed an association between codependency and high maternal control an
d/or low maternal care. In a laboratory procedure modeled after Lyon and Gr
eenberg (1991), high and low codependents evidenced predicted, markedly dif
ferent changes in mood as a function of whether they received positive or n
egative feedback from either an exploitive or a nurturant source. Evaluatio
ns of the source differed similarly. Based on these results, a model for un
derstanding codependent persons' persistence in abusive relationships is pr
oposed.