Potential follow-up increases private contributions to public goods

Area of Science:

• Social Psychology
• Behavioral Economics
• Political Science

Background:

• Individuals are more likely to contribute to public goods when their actions are observable.
• Private and impersonal solicitations (e.g., mail, email) often lack mechanisms to increase contribution observability.

Purpose of the Study:

• To test an intervention that subtly increases the observability of public goods contributions in private solicitations.
• To evaluate the effectiveness of perceived observability on voter turnout.

Main Methods:

• A large-scale field experiment with 770,946 participants was conducted.
• Participants received get-out-the-vote letters with a variation: some included a message about a potential post-election call to inquire about their voting experience.
• This message aimed to increase the perceived observability of voting behavior.

Main Results:

• The intervention, which increased perceived observability, significantly enhanced the impact of the get-out-the-vote letters.
• The effect of this observability intervention surpassed the impact of a typical get-out-the-vote letter.
• This demonstrates a powerful method for increasing public goods contributions.

Conclusions:

• Subtly increasing the perceived observability of contributions is a highly effective strategy for promoting public goods provision.
• This technique can be widely applied to various private solicitation contexts, such as charitable giving and civic engagement.
• The findings have significant implications for designing more effective public policy interventions.