Our results based on interaction effect analysis show that the percentage of variance accounted for by mood and personality is twice as high in the IBMT group as in the RT group. In the RT group the only predictor of improved creative performance is lower extraversion either by itself or in interaction with tension/anxiety. While in the IBMT group several negative moods alone or in interaction with lower extraversion influence TTCT score. The IBMT individuals having both higher introversion levels and higher vigor levels responded more favorably to the short-term IBMT in improving creative performance. Better response to training by more introverted individuals may be a common effect since it is found in both groups. We speculate that introversion may be a personality trait indicating readiness to engage in training that influences creative performance. Future research should explore this relationship.