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Edward Thorndike

Behavioral Psychology

American psychologist whose doctoral research on cats escaping puzzle boxes, published as Animal Intelligence in 1898, founded the experimental study of animal learning and produced the Law of Effect: a response followed by a satisfying outcome is strengthened, one followed by discomfort is weakened. Thorndike spent most of his career at Teachers College, Columbia University, extending his connectionist account of learning to human education and mental testing, and his stimulus-response framework became a direct forerunner of B.F. Skinner's operant conditioning and behaviorism generally.

Facts
Birth YearSourced to the subject's own account
1874 1
Death YearSourced to the subject's own account
1949 1
Nationality / CultureSourced to the subject's own account
American 1
Defining ContributionSourced to the subject's own account
The Law of Effect and the puzzle-box method, founding experimental studies of animal learning and anticipating operant conditioning. 1
Notable WorkSourced to the subject's own account
Animal Intelligence (1898) 1
Connections

Associated With

Halo Effect, Psychological Phenomena

Thorndike's 1920 officer-rating study first documented the effect.

Studies Conducted

Source SimplyPsychology: Edward Thorndike

Theories and Concepts Developed

Law of Effect, Theories and Concepts

Edward Thorndike formulated the law of effect from his puzzle-box experiments with cats, establishing that responses followed by satisfying consequences are more likely to be repeated.

In the Other Atlases
Sources
1. SimplyPsychology: Edward Thorndike
Simply Psychology
  • Edward Thorndike: The Law of Effect, biography section
    Edward Lee Thorndike was born on August 31, 1874, in Williamsburg, Massachusetts, the son of a Methodist minister.
  • Edward Thorndike: The Law of Effect, Law of Effect section
    Responses that produce a satisfying effect in a particular situation become more likely to occur again in that situation, and responses that produce a discomforting effect become less likely to occur again in that situation.
  • Edward Thorndike: The Law of Effect, publication section
    His doctoral dissertation, Animal Intelligence (1898), reported the puzzle-box experiments described above.
  • Studies Conducted: Thorndike's Puzzle Box Experiments, Edward Thorndike: The Law of Effect, puzzle box section
    The experiments proved that animals, in this case, cats, don't learn through sudden moments of 'insight' or human-like reasoning.
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