This study compares the contribution of emotional intelligence (EQ) versus cognitive intelligence (IQ) to efficacy for team work (ETW). Management students working in self-managing teams completed 2 measures of both EQ (Scutte and Baron-EQI) and IQ (Wonderlic and Watson-Glaser). The Williams T2 test was used to test for significant differences in correlations between EWT and both EQ and IQ. Hierarchical regression was used to test whether EQ remains a significant predictor of ETW after controlling for IQ, and whether EQ moderates the relationship between IQ and ETW. Both IQ and EQ are statistically significant predictors of ETW, but EQ is a more significant predictor than IQ, and remains significant after controlling for the influence of IQ. EQ does not moderate the relationship between IQ and efficacy for team work.