We experimentally investigate information aggregation through majority voting when some voters are biased. In such situations, majority voting can have a 'dark side', i.e. result in groups making choices inferior to those made by individuals acting alone. We develop a model to predict how two...

We experimentally investigate information aggregation through majority voting when some voters are biased. In such situations, majority voting can have a "dark side", that is, result in groups making choices inferior to those made by individuals acting alone. In line with theoretical...