Contributions
- He transformed psychology in American from abstract science to what it is today.
- He directly influenced the movement know as Functionalism with the publication of
his monumental Principles of Psychology. The work removed psychology from its
traditional place as a branch of philosophy and established it among the laboratory
sciences.
- Theory of consciousness
- Studied a wide range of consciousness, and did not draw a fixed line between
abnormal and normal experiences.
- Theory of emotions (James-Lange theory of emotions)
- An emotion depends on feedback from one’s own body.
- Pragmatism
- The theory that truth is always tested by its consequences