ABSTRACT
After writing books about dreams, everyday errors (now known as Freudian slips), and jokes, Freud wrote his 1905 book, Three Essays on the Theory of Sexuality. Beginning with sexual perversions and the role of sexuality in hysteria and neurosis, he went on in this book to forge a revolutionary account of developmental psychology in terms of oral, anal, and genital precursors in infancy and early childhood of adult psychology.
