Understanding the Benefit-Cost Relationship in Long-standing Community-based Participatory Research (CBPR) Partnerships: Findings from the Measurement Approaches to Partnership Success (MAPS) Study.

As part of the Measurement Approaches to Partnership Success (MAPS) study, we investigated the relationship between benefits and costs of participation in long-standing community-based participatory research (CBPR) partnerships using social exchange theory as a theoretical framework. Three major findings were identified: (1) the concept of benefits and costs operating as a ratio, where individual benefits must outweigh costs for participation, applies to early stages of CBPR partnership formation; (2) as CBPR partnerships develop, the benefits and costs of participation include each other's needs and the needs of the group as a whole; and (3) there is a shift in the relationship of benefits and costs over time in long-standing CBPR partnerships, in which partners no longer think in terms of costs but rather investments that contribute to mutual benefits.