There is controversy over how team member heterogeneity influence on team performance. This research would address this question, using transactive memory as mediator. By dividing team member heterogeneity into demography heterogeneity and knowledge heterogeneity, this research would (1) prove transactive memory is playing a mediator role between heterogeneity and group performance; (2) suggest that demographic heterogeneity would negatively affect group performance, while knowledge heterogeneity would positively influence group performance.
