An individual's personality is an aggregate conglomeration of decisions we've made throughout our lives (Bradshaw). There are inherent natural, genetic, and environmental factors that contribute to the development of our personality; however, in the pursuit of a more defined persona, many individuals enroll in courses offered in colleges to further or enhance the image they intend to project to others. These classes assist in identifying your conscious traits and contrasting them with what you intend to exhibit. According to process of socialization, "personality also colors our values, beliefs, and expectations...Hereditary factors that contribute to personality development do so as a result of interactions with the particular social environment in which people live." There are several personality types as Katharine Cook Briggs and Isabel Briggs Myers illustrated in several personalities typology tests. These tests only provide enlightenment based on the preliminary insight scored according to the answers judged by the parameters of the test. Other theories on personality development are Jean Piaget stages of development, and personality development in Sigmund Freud 's theory being formed through the interaction of id, ego and superego.