If it doesn't help, it doesn't hurt? Information elaboration harms the performance of gender-diverse teams when attributions of competence are inaccurate.

Information elaboration-the act of exchanging, discussing, and integrating information and perspectives through verbal communication-tends to be considered as the silver bullet that drives the performance of diverse teams. We challenge this notion by proposing that the effect of information elaboration on team performance depends on the accuracy of within-group competence attributions, i.e. the extent to which attributions of task competence among team members correspond with members' actual task competence. We argue that information elaboration may actually harm performance when within-group competence attributions are inaccurate, given that in such teams decisions are likely to be based on suggestions from members who have much influence but little competence. We conducted an experiment with 97 gender-heterogeneous teams working on gender-typical problems and coded their interactions. Our findings support our hypotheses that members who are perceived as more competent are more influential in the information elaboration process, and that information elaboration harms performance when competence attributions are not accurate. In contrast to our expectations, pro-diversity beliefs did not mitigate this negative effect of inaccurate competence attributions. We argue that this speaks to the robustness of our findings regarding the detrimental effects of information elaboration when competence attributions are inaccurate.