What is factor analysis?
a. A method of ranking individuals by their intelligence
b. A statistical procedure that is used to identify which sets of psychological measures are highly correlated with each other
c. The technique of choice for testing fluid intelligence
d. The technique of choice for testing crystallized intelligence
Answer: B
Rationale: Individuals' scores from different measures of vocabulary, reading comprehension, and verbal reasoning might correlate enough to reveal an underlying "language ability" factor.
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_____ refers to the average number of years a person is anticipated to live from birth
a) Birth asphyxia b) Life support c) Life expectancy d) Birth rate
Dr. Puni does not want the participants in his study to be aware of his hypothesis. What will he strive to reduce in his study?
a. margin of error b. divergent validity c. measurement validity d. demand characteristics