Psychometric properties are described for an inventory that measures the daily rewards and worries that parents experience as their sons and daughters transition to adulthood. In a series of 4 studies involving 847 respondents, we explored and confirmed the factor structure of the Transition Daily Rewards and Worries Questionnaire (TDRWQ) in a sample that included transitioning individuals with and without disabilities. The final questionnaire includes 28 items in 4 factors: Positive Future Orientation, Community Resources, Financial Independence, and Family Relations. Evidence of acceptable internal and test-retest reliability is presented, as is discriminant and convergent validity. The TDRWQ should enhance the quantitative approach to understanding parental reactions as sons and daughters make the transition to adulthood.