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This study has benefited greatly from the advice of three anonymous referees and the support of Anne Hopton, Speech and Language therapist, who also carried out the reliability ratings.
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Williams, T.I. Brief report: Vocabulary development in an autistic boy. J Autism Dev Disord 23, 185–191 (1993). https://doi.org/10.1007/BF01066427
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DOI: https://doi.org/10.1007/BF01066427