What is the theory Steven Reiss developed and tested?

Steven Reiss developed the Reiss Motivation Profile, a theory that identifies 16 basic desires that motivate human behavior. His research posits that these desires, such as power, independence, and curiOSity, are universal but vary in intensity among individuals. By assessing these motivations, the profile aims to provide insights into personal behavior, decision-making, and interpersonal relationships, ultimately helping individuals understand themselves and others better. Reiss's work emphasizes the importance of intrinsic motivations in shaping human actions.