Importance Cognitive deficits are a key feature of risk for psychosis. Longitudinal changes in
cognitive architecture may be associated with the social and occupational functioning in
young people. Objectives To examine longitudinal profiles of cognition in individuals at
ultrahigh risk (UHR) for psychosis, compared with healthy controls, and to investigate the
association of cognition with functioning. Design, Setting, and Participants This study has a
multiple-group prospective design completed in 24 months and was conducted from …

Reports an error in" Longitudinal cognitive changes in young individuals at ultrahigh risk for
psychosis" by Max Lam, Jimmy Lee, Attilio Rapisarda, Yuen Mei See, Zixu Yang, Sara-Ann
Lee, Nur Amirah Abdul-Rashid, Michael Kraus, Mythily Subramaniam, Siow-Ann Chong and
Richard SE Keefe (JAMA Psychiatry, 2018 [Sep], Vol 75 [9], 929-939). In the Demographics
paragraph of the Results section a parenthetical phrase indicated “17 nonconverters” and
“156 converters.” The numbers should have been reversed to “17 converters” and “156 …