Gender Mix and Team Performance: Differences between Exogenously and Endogenously Formed Teams

We conduct a randomized controlled trial to study the effect of gender composition teams on performance, self-concept, working style, and individual satisfaction in endogenously exogenously formed teams. randomly divide sample high school students into two groups: we assign one group varying using random assignment allow other form freely. find that disproportionately more male-predominant those would be under endogenously-formed gender-biased prefer even ex-post. Our results also show female-predominant under-perform types but these differences disappear when are endogenously-formed.