Classical conditioning (also known as Pavlovian or respondent conditioning) refers to a learning procedure in which a biologically potent stimulus (e

Classical conditioning (also known as Pavlovian or respondent conditioning) refers to a learning procedure in which a biologically potent stimulus (e.g. food) is paired with a previously neutral stimulus (e.g. a bell). In this photograph a dog is conditioned in the laboratory of Ivan Petrovich Pavlov (1849 - 1936). a Russian physiologist known primarily for his work in classical conditioning. (Photo by: Universal History Archive/Universal Images Group via Getty Images)