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.