When an experiment has shown that an independent variable is a cause of a phenomenon, what is the most reasonable conclusion one should draw?
a. The hypothesis has been proven correct.
b. The scientific question has been answered once and for all.
c. There is evidence that supports the hypothesis, though multiple experiments and methods are still needed.
d. There is some evidence for an association, but one should be cautious about drawing causal conclusions.
Answer: C
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Currently, most psychotherapists describe themselves as being:
a. humanistic in their orientation to therapy b. client centered in their orientation to therapy c. eclectic in their orientation to therapy d. biomedically oriented in their therapy
The environmental hypothesis on IQ is supported by data showing that
a. there are consistent and stable racial group differences. b. embryonic stem-cell implants can boost IQ performance. c. children with superior genotypes earn high IQ scores. d. African-American children adopted by middle-class Caucasians show strong gains in IQ.
Most hair cells communicate by releasing the excitatory neurotransmitter a. acetylcholine
b. glutamate. c. GABA. d. norepinephrine.
During adolescence, negative crisis resolution results in the continuance of a sense of:
a. ego despair b. role confusion c. guilt d. shame and doubt