This study assessed the discriminant, criterion and incremental validity of an ability measure of emotional intelligence (EI). College students (N=330) took an ability test of EI, a measure of the Big Five personality traits, and provided information on Life Space scales that assessed an array of self-care behaviours, leisure pursuits, academic activities, and interpersonal relations. Women scored significantly higher in EI than men. EI, however, was more predictive of the Life Space criteria for men than for women. Lower EI in males, principally the inability to perceive emotions and to use emotion to facilitate thought, was associated with negative outcomes, including illegal drug and alcohol use, deviant behaviour, and poor relations with friends. The findings remained significant even after statistically controlling for scores on the Big Five and academic achievement. In this sample, EI was significantly associated with maladjustment and negative behaviours for college-aged males, but not for females. (PsycINFO Database Record (c) 2010 APA, all rights reserved) (journal abstract)