. Do these normal findings provide useful diagnostic information? How so? What might be happening with Simon

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 Simon, a 16-year-old male, has always performed adequately in school. This semester his math scores dropped from Bs to Fs, but his other grades have remained Bs. IQ testing with the WAIS-IV revealed that he has an average overall IQ without any major deficiencies. Do these normal findings provide useful diagnostic information? How so? What might be happening with Simon?