It is the influence of personality characteristics affecting our social and occupational choices. The development of personality characteristics occurs not during one but each developmental stage of the lifespan. This book discusses such theories as those belonging to Erik Erikson, Abraham Maslow, Carl Rogers, Sigmund Freud, Erich Fromm, and Gordon Allport, among other theorists. The greatest focus of the book centers on Gordon Allport and Erich Fromm and his humanistic psychoanalysis. Fromm's thesis is that although man is be pulled apart from his union with one another by evolution, he or she continues to possess the power of reason.