According to the DSM-IV, narcissistic personality disorder is defined as a "pervasive pattern of grandiosity (in fantasy or behaviour), need for admiration and lack of empathy, beginning in early adulthood and present in a variety of contexts." (p. 282). Also see the Hypersensitive Narcissism Scale (HSNS), which tests specifically for the covert form of narcissism as identified in the research.
For this scale, please choose the response (A or B) that best describes you. Do not spend too long on each question. The scale is composed of 40 questions and takes less than 10 minutes to complete.
Twenge, J. M., Konrath, S., Foster, J. D., Keith Campbell, W., & Bushman, B. J. (2008). Egos Inflating Over Time: A Cross‐Temporal Meta‐Analysis of the Narcissistic Personality Inventory. Journal of personality, 76(4), 875-902.