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Psychology

The Dynamics of Collective Action in Charity and Volunteering

Quick fact

In a classic social dilemma experiment, people contributed about 40-60% of their endowment to a public good in one-shot anonymous interactions, far more than the zero predicted by pure self-interest—a result attributed to social norms and reciprocity.

Why this is interesting

We all know it feels good to help, but why do some people donate huge sums while others offer nothing? And why do we contribute more when others are watching?