In the original article titled “Heritable Variations in Gray Matter Concentration as a Potential Endophenotype for Psychopathic Traits” published in the April 2010 issue of JAMA Psychiatry, then Archives of General Psychiatry (2010;67[4]:406-413. doi:10.1001/archgenpsychiatry.2010.20), the first author’s name was misspelled. The correct spelling is Fruhling V. Rijsdijk, not Rijsdijsk. This article was corrected online.