A. Persistent difficulty with speech sound production that interferes with speech intelligibility or prevents verbal communication of messages B. Causes limitations in effective communication that interfere with social participation, academic achievement, or occupational performance C. Onset in the early developmental period
A. Persistent difficulties in acquisition and use of language across modalities (spoken, written, sign, or other) due to deficits in comprehension or production, including reduced vocabulary, limited sentence structure, and impairments in discourse B. Language abilities substantially and quantifiably below expected for age, resulting in functional limitations in effective communication, social participation, academic achievement, or occupational performance C. Onset in the early developmental period
Hearing impairment (audiological assessment essential); Structural abnormality (cleft palate, macroglossia); Neurological cause (dysarthria - acquired; consistent articulation errors)
Hearing impairment (always exclude - audiological assessment essential); Intellectual disability (language consistent with overall cognitive level); ASD (social communication deficits; RRBs present)