Dr. Welsh is doing experiments using drugs. He is concerned that his subjects will respond to demand characteristics. He may want to control for this by using which of the following?

a. stratification
b. two independent variables
c. a placebo
d. randomization


c

Psychology

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The first items in a long list of items to be remembered are usually remembered better than items in the middle of the list. This is explained by the

A) law of effect B) recency effect C) primacy effect D) continuity effect

Psychology

Phencyclidine was developed as an anesthetic but abandoned for clinical use in humans because it ______.

A. destroys serotonergic neurons in the hindbrain B. causes permanent memory loss, even at low doses C. wasn't a strong enough anesthetic to be effective D. produces schizophrenic symptoms

Psychology

If you were to rank reinforcement schedules by responding rates, which one of these would be on the top?

A. Continuous B. Fixed interval C. Variable ratio D. Variable interval

Psychology

The relatively effortless processing of social information in a non-conscious and unintentional way is known as ________

A) supraliminal processing B) rational introspection C) automatic processing D) interpersonal dialog E) planned behavior

Psychology