The present study investigates associations between relationship-specific childhoodexperiences and relationship functioning in adulthood. According to Rusbults investmentmodel, relationship commitment (i.e., the intention to remain in a relationship and arespective long-term orientation) is one of the best predictors of relationship quality andstability. Commitment is a function of relationship satisfaction, the quality of alternatives, andinvestments. Adult attachment (i.e., attachment anxiety and avoidance) has additionally beenshown to significantly predict commitment. The present study examined the role ofretrospectively measured parenting behaviour and lessons about commitment in the predictionof commitment in adulthood, and whether these associations are mediated by adult attachment,satisfaction, alternatives, and investments. 761 participants (639 women and 122 men) agedbetween 18 and 50 years with an average relationship duration of 4.22 years completed a selfadministeredonline-questionnaire. Path analyses reveal that commitment was stronger themore lessons about dedication to the partner and the less lessons about impermanence ofrelationships were remembered. Attachment avoidance, satisfaction, alternatives, andinvestments turned out to significantly mediate the association between lessons aboutdedication to the partner and commitment. Additionally, commitment was stronger the morerejection and punishment by the father was remembered. Remembered emotional warmth wasassociated with greater attachment security in adulthood, whereas overprotection by themother had an adverse effect on commitment. The results are discussed in the light ofattachment and interdependence theory and related research.