Journal
SUICIDE AND LIFE-THREATENING BEHAVIOR
Volume 40, Issue 6, Pages 612-619Publisher
WILEY
DOI: 10.1521/suli.2010.40.6.612
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Elevated impulsivity is thought to facilitate the transition from suicidal thoughts to suicidal behavior Therefore, impulsivity should distinguish those who have attempted suicide (attempters) from those who have only considered suicide (ideators-only) This hypothesis was examined in three large nonclinical samples (1) 2,011 military recruits, (2) 1,296 college students, and (3) 399 high school students In sample 1, contrary to traditional models of suicide risk, a unidimensional measure of impulsivity failed to distinguish attempters from ideators-only In samples 2 and 3, which were administered a multidimensional measure of impulsivity (i e, the UPPS impulsive behavior scale, Whiteside & Lynam, 2001), different impulsivity-related traits characterized attempters and ideators-only Whereas both attempters and ideators-only exhibited high urgency (the tendency to act impulsive in the face of negative emotions), only attempters exhibited poor premeditation (a diminished ability to think through the consequences of one's actions) Neither attempters nor ideators-only exhibited high sensation seeking or lack of perseverance Future research should continue to distinguish impulsivity-related traits that predict suicide ideation from those that predict suicide attempts, and models of suicide risk should be revised accordingly
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