- Robert Mearns Yerkes: Pioneering Psychologist & Great Ape Research
- Wilhelm Wundt: The Father of Modern Psychology | History & Contributions
- Robert Sessions Woodworth: Pioneering American Psychologist
- Max Wertheimer: Pioneer of Gestalt Psychology | Biography & Impact
- John B. Watson: Founder of Behaviorism - Biography & Impact
- Edward Chace Tolman: Pioneer of Cognitive Psychology
- Louis Leon Thurstone: Pioneer of Psychological Testing
- Lewis Madison Terman: Pioneer of Intelligence Testing | Psychology History
- B.F. Skinner: Behaviorism, the Skinner Box & Its Impact
- Carl Rogers: Biography & Client-Centered Therapy | Psychology Today
- Jean Piaget: A Pioneer in Child Development - Theories & Impact
- Harry and Bonaro Overstreet: Sociological & Philosophical Authors
- The Menninger Family: Pioneers in Psychiatry and Mental Health
- William McDougall: Pioneer of Purposive Psychology | Biography & Impact
- Abraham Maslow: Biography & Humanistic Psychology
- Kurt Lewin: Pioneer of Social Psychology and Field Theory
- Karl Spencer Lashley: Pioneer of Neuropsychology | Biography & Research
- Kurt Koffka: Biography & Contributions to Gestalt Psychology
- Carl Jung: Biography, Analytical Psychology & Collective Unconscious
- Charles Hubbard Judd: Pioneering Educator & Psychologist | Biography
- Ernest Jones: Biography & Contributions to Psychoanalysis
- Joseph Jastrow: Psychologist & Critic of Psychoanalysis | Biography
- Clark Leonard Hull: Pioneering Mathematical Psychology
- Karen Horney: Psychoanalytic Pioneer and Cultural Influences
- Harry Harlow: Pioneering Research on Attachment and Social Behavior
- Erich Fromm: Psychoanalyst & Social Philosopher - Biography & Works
- Anna Freud: Biography & Contributions to Psychoanalysis and Child Psychology
- Hans Eysenck: Biography & Impact on Psychology
- Erik Erikson: Biography & Contributions to Psychology
- Hermann Ebbinghaus: Pioneer of Memory Research | Psychology History
- Edward de Bono: Pioneer of Creative Thinking & Thinking Skills
- Kenneth Bancroft Clark: Psychologist & Civil Rights Pioneer
- James McKeen Cattell: Pioneering Psychologist and Scientific Publisher
- Alfred Binet: Pioneer of Intelligence Testing | History & Impact
- James Mark Baldwin: Psychologist & Pioneer of Child & Social Psychology
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