Research has found significant relations between attachment to parents and psychosocial adjustment. This study explored parental attachment and psychosocial adjustment during emerging adulthood with romantic competence and relationship satisfaction as mediators. In a sample of 188 emerging adult college students, results revealed that mother and father attachment uniquely predicted greater life satisfaction and less distress. Regression analyses showed that romantic competence predicted better psychosocial adjustment, controlling for attachment style and mutuality, and significantly mediated, along with relationship satisfaction, the link between mother attachment and psychosocial adjustment. Additionally, patterns of secure parental attachment, when compared with avoidant or ambivalent attachment, were associated with better psychosocial adjustment. Clearly, secure attachment provides a template for successful romantic relationship development and thereby contributes to greater psychosocial adjustment.