Edward Thorndike's classic article 'A Proof of the Law of Effect' outlining the notion that a behavioral response is strengthened in the presence of a satisfying after-effect stimulus was published as a special paper in the journal Science.

Thorndike's ideas concerning the "law of effect" played an important role in the development of learning theory, most notably as a foundation for B.F. Skinner's work on operant conditioning.

See following link to learn all about the fascinating history of psychology.

History of Psychology