An item would be considered extremely difficult if it had a difficulty
index of
a. .99
b. .50
c. .01
d. none of these, since item difficulty is not a quantified value.
c
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When Peterson and Peterson demonstrated the decay of short-term memory over a delay, why did they ask people to count backward by threes during the delay?
a. To develop procedural memory b. To increase chunking c. To increase depth of processing d. To prevent rehearsal
According to the activation-synthesis theory:
A. dreams reflect unconscious desires and anxieties B. dreams are a continuation of our waking thoughts C. there is no reason to interpret dreams D. it is necessary to dream for our psychological well-being
Ami is looking at a gray house. One wall is in the sun; another wall is in the shade. To
Ami, though, the two walls appear to be the same shade of gray. Ami's perception is an example of a. brightness constancy. b. a perceptual illusion. c. perceptual variance. d. optical distortion. e. haze.
According to Miller, the capacity of short-term memory is roughly __________ items plus
or minus 2. a. 3 b. 5 c. 7 d. 9 e. 12