A punishment or reward will be more effective if it is costly for the person imposing it.
If the costs of punishing or rewarding someone are high, it will have a greater effect on group cooperation.
These are the findings of a study carried out by Daniel Balliet, FEB researcher Laetitia Mulder and Paul van Lange.
Their paper entitled Reward, punishment, and cooperation:
A meta-analysis
is soon to be published in Psychological Bulletin, and is the new FEB Publication of the Month.
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