Divergent thinking (DT) plays a critical role in many creative efforts. Tests of DT are useful estimates of the potential for creative problem solving. This chapter presents the basics of divergent thinking, covering theoretical support and an overview of the different kinds of DT tests and the various scoring methods. It then reviews the factors that can influence divergent thinking, such as knowledge, expertise, openness to experience, and training. Special emphasis is given to investigations related to DT in organizations. Interestingly, in the organizational studies, certain aspects of divergent thinking stand out more than in other domains. Evaluative and convergent processes, for example, are particularly important. The empirical research on evaluative and convergent processes, as they interact with DT, is reviewed. The distinction between interpersonal and intrapersonal evaluation of ideas is discussed, as are the implications for organizational creativity. Recommendations for further studies on divergent thinking are provided.