Under Which of the Following Circumstances Is an Animal Most

Multiple Choice

Under which of the following circumstances is an animal most likely to display a strong conditioned response to a stimulus?

A) The stimulus is always followed by the unconditioned stimulus, and the unconditioned stimulus is never presented at other times.
B) The stimulus is always followed by the unconditioned stimulus, and the unconditioned stimulus is frequently presented at other times.
C) The stimulus is sometimes followed by the unconditioned stimulus, and the unconditioned stimulus is frequently presented at other times.
D) The stimulus is never followed by the unconditioned stimulus.