Knutsson, Mikael; Martinsson, Peter; Wollbrant, Conny - In: Journal of Economic Behavior & Organization 93 (2013) C, pp. 71-77
We use a natural field experiment to investigate the hypothesis that generosity is partly involuntary, by examining whether individuals tend to avoid opportunities to act generously. In Sweden, new recycling machines for bottles and cans with an option of donating the returned deposit to charity...