When a US repeatedly elicits a UR, the repeated presentation of the US produces a gradual decline in the magnitude of the UR. Eventually, the UR may fail to occur.

When a US repeatedly elicits a UR, the repeated presentation of the US produces a gradual decline in the magnitude of the UR. Eventually, the UR may fail to occur.

• A. Habituation
• B. Elicited
• C. Stimulus Class
• D. Backward Conditioning

Answer: (A)

Habituation is the gradual decrease in a response to a repeated stimulus. When the unconditioned stimulus is presented again and again, the magnitude of the unconditioned response diminishes until it may no longer occur. This reflects non-associative learning, where the organism gets used to the stimulus and stops reacting as strongly. It’s different from conditioning processes, since no new CS–US relationship is formed. Sensitization would be the opposite pattern—response increases with repetition.

Habituation is the gradual decrease in a response to a repeated stimulus. When the unconditioned stimulus is presented again and again, the magnitude of the unconditioned response diminishes until it may no longer occur. This reflects non-associative learning, where the organism gets used to the stimulus and stops reacting as strongly. It’s different from conditioning processes, since no new CS–US relationship is formed. Sensitization would be the opposite pattern—response increases with repetition.