A ventriloquist is able to convince you that words are coming
from his dummy's mouth because the dummy's mouth movements match the timing of the words actually coming from the ventriloquist. The ventriloquist is making use of the perceptual principle of
a. continuation.
b. figure-ground.
c. closure.
d. contiguity.
ANSWER: d
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The preschool years largely encompass what Erikson called the __________ stage
a) self-concept b) autonomy versus shame c) individualistic orientation d) initiative versus guilt
You recently completed a psychology experiment on campus in this little room the size of a
closet which was stuffy and warm. Your task was to sit in front of single computer screen displaying a simulated airplane cockpit and detect when a warning light flashed. When finished, the experimenter told you she was studying how people miss warning lights and that she will apply the results to airline pilots? What is the problem with this type of research with regard to external validity? A) Results may not apply to airline pilots because the experiment and airplane environments are so different. B) The warm room was an extraneous variable so the researcher cannot make cause-and-effect conclusions. C) The warm room was an nuisance variable so the researcher cannot make cause-and-effect conclusions. D) Results may not apply to airline pilots because of temporal generalization.