Personality psychology books help answer a simple question: why do people think, feel and act the way they do? These free PDFs take you from Sigmund Freud to the Big Five personality traits.
You'll find university textbooks, clinical guides and founding classics like Carl Jung's Psychological Types, the theory behind the Myers-Briggs types.
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Theories
Personality Theory Books
These personality psychology books explain the big theories, from Freud's psychoanalysis to Jung's psychological types and Alfred Adler's individual psychology. Start with Mark Kelland's textbook if you want the full map in one volume.
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.
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.
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.
Alfred Adler's own introduction to individual psychology, written for general readers. He explains the inferiority feeling, the striving for superiority, birth order and style of life, the ideas that shaped later theories of personality.
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.
Traits are the measurable side of personality, and most researchers today use the Big Five model. Here you'll also find a lesson plan from the American Psychological Association, the VIA character strengths and a classic on temperament.
A brand-new open textbook built around the Big Five personality traits. It covers how the model was discovered, how personality tests are checked for reliability and validity, the person-situation debate and how traits change across life.
A university textbook that opens with personality traits, the Five-Factor Model, stability and personality assessment, then compares classic theorists from Freud and Horney to Rogers and Bandura. Each chapter ends with key vocabulary.
A ready-to-teach unit from the American Psychological Association on personality perspectives, the Big Five traits and personality assessment. It includes lesson plans, class activities and critical-thinking exercises for high school teachers.
A research collection on the 24 VIA character strengths, the positive side of personality traits. The studies look at how strengths like curiosity, kindness and perseverance are measured and how they relate to well-being and work.
Hadassah Littman-Ovadia, Philippe Dubreuil and Maria Christina Meyers (eds.)
Ernst Kretschmer's classic theory of temperament, which linked body types to personality styles. A key historical text for anyone studying how psychologists first tried to classify temperament and character.
Health services like the NHS, Mind and CAMH explain borderline and other personality disorders, the conditions described in the DSM. Several of these guides are written for families and caregivers, not just professionals.
A 150-page practitioner guide on how personality disorders develop, how they are assessed and how staff can build working relationships with people who have them. It covers attachment, trauma, risk and staff well-being.
NHS England and National Offender Management Service
A clear guide for families of people with borderline personality disorder. It explains symptoms, causes and treatments like dialectical behavior therapy, and gives practical advice on communication, crises and caring for yourself.
A handbook written by clinicians and people with lived experience on how to support people with personality disorder in the community. It covers relationships, boundaries, crisis planning and what helps recovery.
A short, plain-language guide to the main types of personality disorder, what may cause them and why the diagnosis is controversial. It includes self-help tips, treatment options and advice for friends and family.
An information pack co-written with service users for people who have, or are exploring, a personality disorder diagnosis. It explains the diagnosis and offers practical skills for managing emotions, with real quotes from lived experience.
That wraps our selection of free personality psychology books in PDF format. To turn these ideas inward, our self-knowledge books pick up where this page ends.
