What type of conditioning pairs a neutral stimulus with a reflex response?

The type of conditioning that pairs a neutral stimulus with a reflex response is classical conditioning.

In this process, an initially neutral stimulus is paired with an unconditioned stimulus that naturally produces a reflex. Food, for example, naturally causes a dog to salivate. If a bell or metronome repeatedly accompanies the food, the sound can eventually trigger salivation by itself. The formerly neutral cue has become a conditioned stimulus, and the learned reaction is a conditioned response.

Russian physiologist Ivan Pavlov made the phenomenon famous through experiments on dogs while studying digestion. He presented his findings on conditioned reflexes in the late 19th and early 20th centuries, helping establish a foundation for modern learning theory.

Classical conditioning differs from operant conditioning. Classical conditioning links stimuli to largely automatic responses, while operant conditioning changes the future frequency of a behavior through its consequences, such as rewards or punishment. Imprinting is a specialized early-life learning process, and habituation is a reduced response after repeated harmless exposure.