| By: |
Friederike Mengel (Universidad de Alicante);
Veronika Grimm (Universidad de Alicante) |
| Abstract: |
We experimentally investigate the effect of imperfect separation of groups on
group selection and cooperation in a standard prisoner¿s dilemma environment.
Subjects can repeatedly choose between two groups, where in one of them an
institutionalized norm fosters cooperation. The degree of separation of the
two groups is varied between treatments. We find that both, the share of
participants that choose into the group where the norm is implemented and the
share of participants that cooperate, rise monotonously with the degree of
group separation. Furthermore with higher group separation significantly more
subjects support the enforcement of the norm. |
| Keywords: |
Experiments, Cooperation, Group Selection, Social Norms, Population Viscosity. |
| JEL: |
L13 L23 |
| Date: |
2007–04 |
| URL: |
http://d.repec.org/n?u=RePEc:ivi:wpasad:2007-06&r=evo |