One of the largest interest groups in the United States is the American Association for Retired Persons (AARP). Some members of this organization do not agree with all the goals pursued by the organization, but they contribute money to it anyway because they receive many benefits by being AARP members. For example, AARP members receive discounts at restaurants and hotels. By offering these exclusive benefits to members to entice them to contribute, the AARP is using to help solve its collective action problem.

Selective incentives

Explanation:

Selective incentives are private goods made available to people on the basis of whether they contribute to a collective good. The concept of selective incentive is important for focusing attention on the factors besides the group goal that affect people's desire to participate in social movements.

experiments.

surveys.

questionnaires.

interviews.

case studies.

participant and non-participant observation.

observational trials.

studies using the delphi method.

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