What evidence did Spearman cite to support his concept of a "g" factor in intelligence?
A) Mean performance on IQ tests rises until age 14-20, and then begins to decline.
B) Changes in the instructions can alter the mean performance of various groups.
C) Mean performance on IQ tests has been rising from one generation to the next.
D) Most people who do well on one intellectual task do well on others tasks also.
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A) the
Q5: If a psychologist wanted to test Spearman's
Q6: According to Raymond Cattell, the "g" factor
Q7: Suppose someone demonstrated that there are several
Q9: Which of the following has been proposed
Q10: The main evidence for the existence of
Q11: When Spearman described the "g" factor in
Q12: One possible explanation for Spearman's "g" factor
Q13: Charles Spearman inferred the existence of a
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