Which of the following will lead to the strongest conditioning?
a. The conditioned stimulus and unconditioned stimulus are presented at the same time.
b. The conditioned stimulus is presented just before the unconditioned stimulus.
c. The unconditioned stimulus is presented just before the conditioned stimulus.
d. A second stimulus is presented at the same time as an already existing conditioned stimulus for extra clarity.
Answer: B. The conditioned stimulus is presented just before the unconditioned stimulus.