1. Sigmund Freud
   1. Psychoanalysis
      1. everything has meaning
      2. early development
2. Wilhelm Widst
   1. Father of Psychology
      1. Germany 1849
3. John B. Watson
   1. Behaviorism
4. Abraham Maslow
   1. Humanism
      1. reaction to humanism
5. Max Wertheimer
   1. Gestalt
      1. response to structuralism
      2. whole is greater than its parts
      3. Germany nineteenth century