title: Comparison of articulation severity ratings of s and r by lower-, middle-, and upper socioeconomic groups.
mesh_terms: D000162:Acoustics; D000704:Analysis of Variance; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007087:Illinois; D007600:Judgment; D008297:Male; D010465:Perception; D012959:Socioeconomic Factors; D013064:Speech Disorders / Q000175:diagnosis / Q000453:epidemiology*