<p>Group behavior cannot always be understood solely by examining the actions of individual members. Some approaches have focused on how group behavior emerges from the interactions and learning processes of individuals—that is, on the mechanisms that produce collective outcomes from individual contingencies. In this article, we take a complementary perspective: rather than analyzing how groups emerge from individuals, we examine how the behavior of groups themselves, treated as systems, can be shaped by reinforcement contingencies at the level of the group. In other words, we ask how groups can learn through consequences. To address this question, we summarize and extend core principles of behavior analysis—particularly operant conditioning—and apply them directly to group behavior. Although related ideas have appeared in the literature on metacontingencies and group contingencies, our framework differs in that it shows how the analytic tools traditionally used to study individual behavior can be systematically extended to groups, offering a coherent and testable foundation for the experimental analysis of group behavior.</p>