title: An opportunity to refine our understanding of "response shift" and to educate researchers on designing quality research studies: response to Ubel, Peeters, and Smith.
authors.affiliation: Outcomes Research Branch, Applied Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, EPN 4088, 6130 Executive Blvd., MSC 7344, Bethesda, MD 20892-7344, USA. reeveb@mail.nih.gov
authors.forename: Bryce B
authors.initials: BB
authors.lastname: Reeve