Learning Objective:

Understand the principles of classical conditioning and identify examples in physiological and behavioral contexts.

Classical conditioning is a type of associative learning in which a neutral stimulus (NS) becomes associated with a stimulus that naturally elicits a response, called the unconditioned stimulus (UCS). After repeated pairings, the neutral stimulus becomes a conditioned stimulus (CS), capable of eliciting a conditioned response (CR) similar to the original unconditioned response (UCR).

Key Components:

• Unconditioned Stimulus (UCS): Naturally triggers a response (e.g., food).
• Unconditioned Response (UCR): Natural reaction to UCS (e.g., salivation).
• Neutral Stimulus (NS): Initially does not trigger the UCR (e.g., bell).
• Conditioned Stimulus (CS): Former NS that now triggers the response after learning (e.g., bell).
• Conditioned Response (CR): Learned response to CS (e.g., salivation at the bell).

Classic Examples:

Pavlov’s Dogs:

Pavlov’s Dog — It shows the two stages of classical conditioning: first, the dog gets food after the bell, then the dog salivates with the bell alone.

Chemotherapy-Induced Nausea:

Activity