Competition is often judged by official decision makers, such as judges, juries, and referees. Systematic bias in those judgements, frequently related to social identities, may have undesirable effects. We investigate whether raising awareness can correct or even reverse such bias. We use a...

Competitions often suffer from biased judgments by officials tied to their social identities. In international cricket, home nation umpires favoured home teams, but neutral umpires were introduced successfully to address this bias. However, the COVID-19 pandemic prompted the return of home...