Voting is often the most public and visible example of mass collective decision-making. But how do we define a collective decision? And how do we classify and e

Every day thousands of decisions are made by all kinds of committees, parliaments, councils and boards by a 'yes-no' voting process. Sometimes a committee can o

Individual decision making can often be wrong due to misinformation, impulses, or biases. Collective decision making, on the other hand, can be surprisingly acc

A study of the classical aggregation problems that arise in social choice theory, voting theory, and group decision-making under uncertainty.

An examination of the phenomenon of social cooperation failure, even amongst a group of rational individuals.