Epidemiological surveys, in the US and Canada, estimated the prevalence of<unk>  in five-year-olds at around 7%. However, neither study adopted the stringent "discrepancy" criteria of the Diagnostic and Statistical Manual of Mental Disorders or ICD-10;<unk>  was diagnosed if the child scored below cut-off on standardized language tests, but had a nonverbal IQ of 90 or above and no other exclusionary criteria.
Specific language impairment
Nonverbal learning disorder
Language delay
Mixed receptive-expressive language disorder
Global perceptions of autism
Speech and language impairment
Language disorder
Global developmental delay