Mike and Jeff are brothers who have just moved with their parents into a beautiful old house. Mike soon discovers that if he flushes the toilet while Jeff is taking a shower, it will cause the water in the shower to become scalding hot. Naturally, Jeff screams as his reflexes cause him to leap backward in pain. After Mike has repeated this procedure several times, Jeff has begun to twitch
involuntarily every time he hears any toilet flush. In this example, the sound of the flushing toilet would be the
a. conditioned response (CR).
b. conditioned stimulus (CS).
c. unconditioned response (UR).
d. unconditioned stimulus (US).
B
Psychology
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Which of the following aspects is critical the experimental but not correlational design?
A) the ability to test predictions. B) the use of variables. C) the use of operational definitions. D) random assignment.
Psychology
Most people have difficulty actually recognizing the correct image of the Lincoln penny. The most likely cause of this problem is _______________
a) interference b) memory trace decay c) encoding failure d) repression
Psychology