THE INFLUENCE OF COGNITIVE-BASED GROUP COMPOSITION ON DECISION-MAKINGPROCESS AND OUTCOME

The effects of cognitive-based group composition on decision-making pr ocess (problem formulation, ideation) and outcome (performance, time-t o-decision) were investigated. Two types of composition based on the M yers-Briggs Type Indicator were compared - a uni-temperament group com position (all sensing-judgers), common among supervisors and managers, and a multi-temperament composition (a sensing-judger, a sensing-perc eiver, an intuitive-thinker, and an intuitive-feeler). While significa nt relationships were found between the process and outcome stages, co gnitive-based group composition generally did not predict the decision making process or outcome variables. A significant interaction between group composition and problem formulation, however, suggests that a m ulti-temperament (heterogeneous) composition can moderate the effect o f problem formulation on performance. The implications of these findin gs for cognitive-based group composition and decision making are discu ssed, along with suggestions for future research.