The growing interest in the study of narcissism has resulted in the development of a number of assessment instruments that manifest only modest to moderate convergence. The present studies adjudicate among these measures with regard to criterion validity. In the 1st study, we compared multiple narcissism measures to expert consensus ratings of the personality traits associated with narcissistic personality disorder (NPD; Study 1; N 98 community participants receiving psychological/psychiatric treatment) according to the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; DSM–IV–TR; American Psychiatric Association, 2000) using 5-factor model traits as well as the traits associated with the pathological trait model according to the Diagnostic and Statistical Manual of Mental Disorders (5th ed.;