At what point, numerically, do regular IQ tests, like the WISC-IV or WISC-V start losing their ability to correctly measure very high scores? When should one consider an extended norms test to
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Practice Book for the WISC-V Test: Improve Nonverbal and Processing Speed Skills with 130 Exercises (IQ Tests series): Hampton, Zoe: 9798358344501: Amazon.com: Books
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