Which of the Following Does Not Increase the Strength of the Conditioned

Multiple Choice

Which of the following does not increase the strength of the conditioned response in classical conditioning?

A) increasing the intensity of the unconditioned stimulus
B) always following the conditioned stimulus with the unconditioned stimulus
C) presenting the conditioned stimulus a considerable time before the unconditioned stimulus
D) more pairings of the conditioned and unconditioned stimuli