Adrian Bruhin, Lorenz Götte, Simon Haenni, Lingqing Jiang, 07 September 2015

Evidence suggests that people are more likely to behave in a pro-social way if they are aware of others who behave in such a manner. This column finds evidence for this phenomenon among blood donors. For every unit increase in a donor’s motivation, there is a 44% spillover in motivation to their fellow tenant. There is an overall increase in donation rates due to such a social multiplier of 17.9 percentage points, instead of the 10 percentage points obtained by calling an isolated donor.

Alois Stutzer, 14 November 2008

Alois Stutzer of the University of Basel talks to Romesh Vaitilingam about his research on the impact of material incentives on people’s willingness to give blood – a field experiment offering free lottery tickets or free cholesterol tests to different groups of current and potential donors. The interview was recorded at the annual congress of the European Economic Association in Milan in August 2008.

Nicola Lacetera, Mario Macis, 04 November 2008

Episodes of blood supply shortage are the norm rather than the exception. “Pure” altruism is apparently not enough to guarantee a steady supply of blood, but economic incentives to donate might crowd-out intrinsic motivations. This column presents evidence that blood donors respond to material incentives and public recognition in the way predicted by standard economic theory. Rewarding them could increase blood supply.


CEPR Policy Research