In what way do IQ calculations in modern tests differ from those of a century ago?
a. Modern IQ tests are all normed to eliminate cultural bias.
b. Modern tests have abandoned the deviation IQ score.
c. Modern tests no longer use the concept of mental age.
d. Modern tests recognize that the "normal distribution" is a nonexistent hypothetical entity.
Answer is: a. Modern tests no longer use the concept of mental age.
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