Of the following, ______ has the highest degree of external validity.
A. a laboratory experiment
B. participant observation
C. structured interviews
D. an experiment using naturalistic observation methods
Ans: B
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Odors trigger firing of receptor neurons in the olfactory membrane high in each nostril
Indicate whether the statement is true or false
Which of the following is the best formulated hypothesis?
a. A psychologist wonders if caffeine affects attention. b. Does caffeine affect attention? c. If caffeine is ingested, attention will be enhanced. d. Caffeine and attention: a relationship?