1.     Paul Ekman




Pioneer in the study of emotions and their relation to facial expressions and has created an “atlas of emotions”.

2.     Phillip Zimbardo




Known for his Stanford prison experiment, which had to shut down. He is also the guy who hosts the Pysch study videos for our .00 experiments.

3.     Phineas Gage




An American railroad construction foreman who survived a rock blasting accident destroying his left frontal lobe which resulted in a change of his personality and behavior.

4.     Raymond Cattell



He is known for his 16 Personality Factors, fluid and crystallized intelligence, and his applications of personality research to psychotherapy and learning theory.

5.     Robert Rosenthal



Studies about self-fulfilling prophecies and explored in a well-known study of the Pygmalion Effect.

6.     Robert Sternberg



Known for his triarchic theory of intelligence and triangular theory of love.

7.     Robert Yerkes




Was a pioneer in the study of human and primate intelligence as well as the social behavior of gorillas and chimpanzees.

8.     Robert Zajonc




Known for his work on social and cognitive processes as well as his experiment on how married couples began to develop similar facial features.

9.     Rosenhan




Known for his Rosenhan experiment, in which it challenged the validity of psychiatry diagnoses.

10.  Rosenthal and Jacobson



Known for the Pygmalion effect, a phenomenon whereby the greater the expectation placed upon people, the better they perform.

11.  Solomon Asch


Gestalt psychologist known for his study in conformity experiments, which demonstrated the influence of group pressure opinions.

12.  Stanley Milgram





Known for his small-world experiment and most known for his Milgram shock experiment.


13.  Stanley Schachter




American psychologist who proposed the two factor theory of emotion, which states that emotion is based on physiological arousal and cognitive label.

14.  Tolman



Most well-known for his studies of learning in rats using mazes, dealing with behavioral psychology.

15.  Walter B. Cannon



Coined the term fight or flight response, a response to a perceived harmful attack, and also expanded on Claude Bernard’s concept of homeostasis.

16.  William James



Cited as one of the founders of functional psychology and known for James-Lange theory of emotion.

17.  William Sheldon




Created the field of somatotype and constitutional psychology that correlated body types with behavior.

18.  Wihelm Wundt



Regarded as the “father of experimental psychology” and was the first person to ever call himself a psychologist.

19.  Wolpe



South African psychiatrist who treated soldiers with post traumatic stress disorder.

20.  Zajonc and Markus



  Known for his work on social and cognitive processes as well as his experiment on how married couples began to develop similar facial features.

21.  John Locke


Known for his idea of tabula rasa, or blank slate, in which Locke believed everyone was born with a “blank slate.”

22.  Rene Descartes



Known for the early modern version of emotions and has been known as “The Father of Modern Philosophy.”

23.  Socrates



Ancient Greek philosopher known for his idea of the Socratic method, answering a question with a question.

24.  Aristotle



Greek philosopher known for his ideas and discoveries of the golden mean and Aristotelian logic.

25.  William Dement



Sleep researcher who founded the Sleep Research Center at Stanford University. He is a leading authority on sleep deprivation.

26.  John Garcia



Most known for his research on taste aversion learning.

27.  Edward Bradford Titchener


Known for structuralism, empathy, and introspection.

28.  Herman won Helmholtz


Known for his mathematics of the eye, theories of vision, and visual perception. Also known for his work in physics, specifically electrodynamics.

29.  Sigmund Freud



Known for psychoanalysis and therapeutic techniques such as free association .