The composition of normative groups and diagnostic decision making: shooting ourselves in the foot.

  title={The composition of normative groups and diagnostic decision making: shooting ourselves in the foot.},
  author={Elizabeth D. Pe{\~n}a and Tammie J. Spaulding and Elena Plante},
  journal={American journal of speech-language pathology},
  volume={15 3},
PURPOSE The normative group of a norm-referenced test is intended to provide a basis for interpreting test scores. However, the composition of the normative group may facilitate or impede different types of diagnostic interpretations. This article considers who should be included in a normative sample and how this decision must be made relative to the purpose for which a test is intended. METHOD The way in which the composition of the normative sample affects classification accuracy is… 

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