Which of the following is true about the Wechsler tests?
a. The WISC-IV is a downward extension of the WAIS-IV, and the WPPSI-III is a downward extension of the WISC-IV.
b. The three tests are used for individuals aged 2 through 90, based on expected intellectual levels.
c. The tests have been created independently, and have little in common.
d. The tests show little or no correlation with the Stanford-Binet.
Answer: a. The WISC-IV is a downward extension of the WAIS-IV, and the WPPSI-III is a downward extension of the WISC-IV.
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