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A conceptual analysis is offered that differentiates four motives for acting for the public good: egoism, collectivism, altruism, and principlism. Differentiation is based on identification of a unique ultimate goal for each motive. For egoism, the ultimate goal is self-benefit; for collectivism, it is to increase group welfare; for altruism, to increase one or more other individuals' welfare; for principlism, to uphold one or more moral principles. Advocates claim that these last three motives cannot be reduced to egoism. Evidence for this claim is limited, however, especially for collectivism and principlism. It is hoped that the conceptual distinctions proposed will permit broader, more precise empirical study of nonegoistic motives for acting for the public good.
C. Daniel Batson (Sat,) studied this question.