Noni is studying the effect of a new antidepressant. She randomly assigns participants with depression to either take the medication or receive a placebo. She then measures the levels of depression in both groups and compares them. This would best be described as which of the following?
A. pretest-posttest control group design
B. one-shot case study
C. true experiment
D. correlational research
Answer: B
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Some psychologists believe that the activity of mirror neurons serve as the biological basis for
A) empathy. B) vanity. C) aggression. D) jealousy.
Heidi has been using psychoactive drugs. She appears extremely alert and euphoric. She sometimes has hallucinations. Her physical and psychological dependence is moderate to high. Which category of psychoactive drugs is Heidi using?
A. CNS stimulating drugs B. CNS depressant drugs C. Hallucinogenic drugs D. Opiates
Brendon reacts negatively to and withdraws from novel stimuli. He could be classified as a(n) __________ child
A) sociable B) shy C) easy D) uninhibited
Which statement best illustrates the concept of craving?
A. A man ingests an aspirin to rid himself of a strong headache. B. A hungry rat presses a lever to obtain a food pellet. C. A rat presses a lever that results in delivery of shock through the floor of the chamber. D. A "free" injection of cocaine reinstates responding for intravenous cocaine in a rat that previously underwent extinction of cocaine response.