The primary purpose of a factor analysis is to
a. determine the relationship between variables.
b. reduce a larger set of variables to a smaller composite set.
c. insure that proper inferences are being made.
d. determine the degree of non-association between variables.
b
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Indicate whether the statement is true or false
Which of the following is true about the neural control of waking?
A. The cortex must begin the waking process and send signals to lower brain areas that are involved in arousal. B. The brain stem must begin the waking process and send signals to higher brain areas that are involved in arousal. C. The midbrain, by itself, controls the waking process. D. There are arousal centers in both the brain stem and the forebrain that coordinate waking with other brain areas.
_____ is an emotion evoked by sympathy for another.
A. egoism B. empathy C. altruism D. voyeurism
Which statement about the perceptual narrowing effect is true?
A) Babies are not sensitive to speech sounds, but they become so over time. B) Human babies cannot discriminate individual faces of humans or monkeys. C) Six-month-olds can detect rhythmic changes in both Western and non-Western melodies. D) After exposure to Western music, 12-month-olds become aware of changes in non-Western rhythms