Classical and Operant Conditioning
Classical: Fundamental learning process first dexcribed by Ivan Pavlov. An event that automatically elicits a response is paired with another stimulus event that does not (a neutral stimulus). After repeated pairings, the neutral stimulus becomes a conditioned simulus that by itself can elicit the desired response.
Operant: Fundamental behavioral learning process in which responses are modified by their consequences (reinforcers, punishers, extinction and so on)