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Decisions are often made by heterogeneous groups of individuals, each withdistinct initial biases and access to information of different quality. We showthat in large groups of independent agents who accumulate evidence the first todecide are those with the strongest initial biases. Their decisions align withtheir initial bias, regardless of the underlying truth. In contrast, agents whodecide last make decisions as if they were initially unbiased, and hence makebetter choices. We obtain asymptotic expressions in the large population limitthat quantify how agents' initial inclinations shape early decisions. Ouranalysis shows how bias, information quality, and decision order interact innon-trivial ways to determine the reliability of decisions in a group.

Fast decisions reflect biases, slow decisions do not