This research introduces the Reminiscence Functions Scale (RFS), a 43-item questionnaire that can be used to assess reminiscence functions over the lifecourse. Adults (710) ranging in age from 17 to 91 (mean age = 45.76 years) completed a 54-item Reminiscence Functions Scale-prototype measure, the results of which were submitted to a principal components analysis. Results indicated the viability of a 43-item, 7-factor solution with good reliability. Factors were labeled: Boredom Reduction, Death Preparation, Identity/Problem-Solving, Conversation, Intimacy Maintenance, Bitterness Revival, and Teach/Inform. A separate validity study demonstrated the predictive validity of the RFS. Directions for future research are discussed.