Standardized Tests and the Diagnosis of Speech Sound Disorders

Abstract

Purpose The purpose of this tutorial is to provide speech-language pathologists with the knowledge and tools to (a) evaluate standardized tests of articulation and phonology and (b) utilize criterion-referenced approaches to assessment in the absence of psychometrically strong standardized tests. Method Relevant literature on psychometrics of standardized tests used to diagnose speech sound disorders in children is discussed. Norm-referenced and criterion-referenced approaches to assessment are reviewed, and a step-by-step guide to a criterion-referenced assessment is provided. Published criterion references are provided as a quick and easy resource guide for professionals. Results Few psychometrically strong standardized tests exist for the evaluation of speech sound disorders for monolingual and bilingual populations. The use of criterion-referenced testing is encouraged to avoid diagnostic pitfalls. Discussion Speech-language pathologists who increase their use of criterion-referenced measures and decrease their use of standardized tests will arrive at more accurate diagnoses of speech sound disorders.