The double-edged sword of grandiose narcissism: implications for successful and unsuccessful leadership among U.S. Presidents.

Recent research and theorizing suggest that narcissism may predict both positive and negative leadership behaviors. We tested this hypothesis with data on the 42 U.S.

Fearless dominance and the U.S. presidency: implications of psychopathic personality traits for successful and unsuccessful political leadership.

Although psychopathic personality (psychopathy) is marked largely by maladaptive traits (e.g., poor impulse control, lack of guilt), some authors have conjectured that some features of this condition (e.

Assessing the U.S. presidents using the Revised NEO Personality Inventory.

This article describes the use of objective psychological instruments, including the Revised NEO Personality Inventory (NEO PI-R), to assess the personalities of all 41 U.S. presidents to date.

Absence of hostility in outpatients after administration of halazepam--a new benzodiazepine.

A number of benzodiazepine have been shown to increase hostility and aggression. This study examines whether halazepam, a new benzodiazepine structurally very similar to diazepam, is associated with increases in hostility. Fifty-one adult outpatients in a double blind, 6 week study were randomly assigned either halazepam or placebo.