Aside from the contributions Tolman made to learning theory such as purposive behaviorism and latent learning, he also wrote an article on his view of ways of learning and wrote some works involving psychology, sociology, and anthropology. Tolman was very concerned that psychology should be applied to try to solve human problems, and in addition to his technical publications, he wrote a book called "Drives Toward War". Moreover, in one of his papers, ""A theoretical Analysis of the Relations between Psychology and Sociology"", Tolman takes independent, dependent, and intervening variables under the context of psychology and sociology. Then he puts them together and show the interrelations between the two subjects in terms of variables and research. In another publication, ""Physiology, Psychology, and Sociology"", Tolman takes the three subjects and explains how all three depend or interrelate with each other and must be looked at as a whole. Tolman creates a hypothetical situation and shows the conditions and interrelations between the three subjects in the situation.