A laboratory experiment was conducted to investigate the interaction between task incentives and the Type A behavior pattern in determining performance during a task of verbal problem solving. The results indicated that Type A subjects responded more quickly and more frequently than their Type B counterparts. In addition, evidence suggested that a situational characteristic–whether instructions offered a monetary reward or served as an evaluative stressor–affected subjects differently depending on their behavior pattern classification. These findings suggest that Pattern A behavior occurs as a response to challenges signifying the potential for reward as well as a threat of failure. Implications for future research emphasize the need to investigate the characteristics of the situation and the task, as well as the individual.