Purposive behaviorism is a branch of psychology that was introduced by Edward Tolman. It combines the objective study of behavior while also considering the purpose or goal of behavior. Tolman thought that learning developed from knowledge about the environment and how the organism relates to its environment. Tolman’s goal was to identify the complex cognitive mechanisms and purposes that guided behavior. His theories on learning went against the traditionally accepted stimulus-response connections (see classical conditioning) at this time that were proposed by other psychologists such as Edward Thorndike. Tolman disagreed with Watson’s behaviorism, so he initiated his own behaviorism, which became known as purposive behaviorism.