Understanding Human Nature

A complete university textbook that walks through every major personality theory, from Freud and the neo-Freudians to humanistic, trait and cognitive approaches. It also shows how culture, religion and non-Western thought shape our view of personality.

Mark D. Kelland

A classic e-textbook with one clear chapter per thinker: Freud, Jung, Adler, Horney, Erikson, Allport, Maslow, Rogers, Frankl and many more. Each chapter explains the theory in plain language, so it works well as a study guide.

C. George Boeree

Carl Jung's founding work on introversion, extraversion and the four psychological functions of thinking, feeling, sensation and intuition. It is the theory behind the Myers-Briggs types, in the classic English translation by H. Godwin Baynes.

Carl Gustav Jung

An academic study of the person-situation debate: how much of our behavior comes from stable traits and how much from the situation we are in. It reviews the evidence and proposes a way to bring personality and social psychology together.

Barbara Krahé