– Sigmund Freud had a phenomenal mind which laid the foundation of the psychodynamic theory. Freud’s belief that conflict in childhood caused conflict in adulthood was the initial layer of the psychodynamic theory. He pointed out the vitality of successfully completing the stages of development and the detriment that may occur if the stages of development were not successfully completed. Freud’s theory grasped the attention of several other behaviorists who took his lead and edited it to become a generalized theory appealing to almost every aspect of personality and behavioral development. Some of his beliefs were omitted and others were expanded to include an array of explanations of an individual and the reasons why they act, think, and feel as they do.