| A | B |
| Wilhelm Wundt | set up the first psychological laboratory, trained subjects in introspection |
| William James | published psychology's first textbook: The Principles of Psychology, created functionalism |
| Max Wertheimer | Founding Gestalt psychologist |
| Sigmund Freud | created psychoanalytic theory |
| John Watson | main proponent of behaviorism, performed Little Baby Albert experiment |
| B.F. Skinner | behaviorist, expanded the ideas to include reinforcement |
| Abraham Maslow | humanist (hierarchy of needs) |
| Carl Rogers | humanist (unconditional positive regard) |
| Mary Whiton Calkins | Functionalist, became president of the APA |
| G. Stanley Hall | first president of the APA |
| Jean Piaget | Cognitive developmental theory, our cognitions developing stages as we mature |
| Socrates | Ancient Greek philosopher, who along with his student Plato, concluded the mind is separable from the body(continues after the body dies) and that knowledge is innate. |
| Aristotle | Student of Plato, disagreed with Plato and Socrates, he believed that knowledge was NOT innate and instead grows from experience. |
| John Locke | Argued that the mind at birth is a "tabula rasa" or blank state, therefore there are no innate ideas. Establishes Empericism |
| Edward B. Titchener | Student of Wilhelm Wundt, he started the psychological school of structuralism which focused on introspection |
| Margaret Floy Washburn | The first woman to receive a psychology Ph.D; synthesized animal behavior research in "The Animal Mind", |
| Stanley Milgram | His experiment taught us that about 2/3rds of us could be convinced by an authority figure to kill on command. |
| Philip Zimbardo | His experiment supported the hypothesis that "A bad place creates bad people." |
| Sir Francis Bacon | Founded the Scientific Method |