, Volume 78, Issue 1, pp 5-13
Date: 17 Oct 2012

In memoriam, J. Douglas Carroll 1939–2011

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John Douglas Carroll, widely regarded as a leading psychometrician and mathematical psychologist of the last four decades, and one of the founding fathers of classification as an interdisciplinary methodological field, passed away at the age of 72 on Tuesday, June 7, 2011, at Overlook Hospital in Summit, NJ. He is survived by his wife of 46 years, Sylvia B. Carroll, and two sons, Steven D. Carroll of Saratoga Springs, New York, and Gregory A. Carroll of Columbus, Ohio, as well as by his daughter-in-law, Maria Ryan Carroll, and two grandchildren, Jenny Morgan Ryan and Bradley Ryan Carroll.

Gifted people learn rapidly. Born on January 3, 1939, in Philadelphia, Pennsylvania, Doug Carroll finished his undergraduate studies with honors at the University of Florida in August 1958, with comajors in Mathematics and Psychology, at the age of nineteen. He was elected to Phi Beta Kappa, and won an Educational Testing Service Psychometric Fellowship to Princeton University, where he received his M. ...

My thanks are due to Sylvia Carroll for providing me with some crucial biographical details, and for stimulating me to write this obituary.