Connectionism - Edward Thorndike (1874 - 1949)

Clasicall Conditioning - Ivan Pavlov (1849 - 1936)

Contiguity Theory and One Trial Learning Edwin Guthrie (1886 - 1959)

Sign Learning - Edward Tolman (1886 - 1959)

Drive Reduction Theory - Clark Hull (1884 – 1952)

Operant Conditioning - Burrhus Skinner (1904 - 1990)

Stimulus Sampling Theory William Estes (1919 - )

The Keller Plan - Fred Keller (1899 - 1996)

Programmed Instruction - Burrhus Skinner (1904 - 1990)