Research Shows That People Are More Likely to Donate to a Public

Multiple Choice

Research shows that people are more likely to donate to a public good after group discussion, and less likely to donate money if discussion is not permitted. Why does communication lead to an increase in donations?

A) The group members are able to form a norm regarding appropriate behavior.
B) The group members come to an understanding regarding deviations from the norm.
C) The group members promise to stick to the norm.
D) All of the above