Studies of parenting of infants use varying methods. We report a comparison of parenting measures in a large set of adoptive parents of infants from three sources: coded observation, interviewer ratings, and parental self-reports. We give special attention to the latter two because they are practical for large scale studies and clarify their utility for characterizing unique dimensions of parenting. We used exploratory and confirmatory factor analyses to delineate three dimensions of parenting: vexed, hostile, and supportive/engaged using self-reported and interviewer ratings of parenting. Results were consistent with the broader parenting literature, and although dimensions were source-specific, structural equation models validating domains against correlates of parenting including parent and child problematic functioning and observationally-coded ratings of parenting revealed cross-source correlations. This evidence suggests that self-reported and interviewer ratings of parenting capture important but distinguishable aspects of parenting, and supports the use of these easily obtainable measures.