The following information should have been included in the author acknowledgment of “Conceptualization, Measurement, and Application of Quality of Life for Persons With Intellectual Disabilities: Report of an International Panel of Experts,” by Robert L. Schalock, Ivan Brown, Roy Brown, Robert A. Cummins, David Felce, Leena Matikka, Kenneth D. Keith, and Trevor Parmenter (Mental Retardation, Volume 40, Number 6, p. 470: “This paper was prepared for the World Health Organization as part of the International Association for the Scientific Study of Intellectual Disabilities (IASSID) Workplan. The authors alone are responsible for the opinions expressed in the paper.”