RT Journal A1 Linnoila M, Virkkunen M, Nuutila A, Goodwin FK T1 ERratum corrected JF Archives of General Psychiatry JO Archives of General Psychiatry YR 1989 FD October 1 VO 46 IS 10 SP 960 OP 960 DO 10.1001/archpsyc.1989.01810100102024 UL http://dx.doi.org/10.1001/archpsyc.1989.01810100102024 AB In our article in the March 1987 issue of the Archives,1 a confusing statement appears on pages 242 and 245. It equates Klinefelter's syndrome with XYY chromosome abnormality. The correct statement on both pages should read XYY chromosome abnormality, and Klinefelter's syndrome should be omitted.We apologize for this error that occurred during the editing process and that we did not catch while proofreading the manuscript.