{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T10:28:56Z","timestamp":1790850536356,"version":"4.1.0"},"reference-count":26,"publisher":"Korean Academy of Rehabilitation Medicine","issue":"1","license":[{"start":{"date-parts":[[2021,2,9]],"date-time":"2021-02-09T00:00:00Z","timestamp":1612828800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["e-arm.org"],"crossmark-restriction":true},"short-container-title":["Ann Rehabil Med"],"published-print":{"date-parts":[[2021,2,28]]},"abstract":"<jats:p>Objective To retrospectively review the characteristics of preschool children with speech and language disorders to determine their clinical features and compares the average degrees of language delay based on hospital visit purposes, language developmental delay causes, and maternal language.Methods One thousand one hundred two children (832 males, 270 females) with the chief complaint of language or speech problems who underwent language assessment for the first time were included. Their medical records, including demographic data, language environments, and family history of language problems and other developmental problems, were collected. Furthermore, the results of language and developmental assessments and hearing tests were collected.Results Among the children enrolled in this study, 24% had parental problems and 9% were nurtured by their grandparents. The average degree of language delay did not differ regarding purposes of hospital visits. The average degree of language delay was greatest in children with autism spectrum disorders and least in children with mixed receptive\u2013expressive language disorders. In children with mothers who do not speak Korean as their native language, social quotients in the social maturity scale were less than 70.Conclusion Language environment is an essential factor that may cause speech and language disorders. Moreover, maternal language seems to affect the social quotient of the social maturity scale.<\/jats:p>","DOI":"10.5535\/arm.20129","type":"journal-article","created":{"date-parts":[[2021,2,9]],"date-time":"2021-02-09T06:38:39Z","timestamp":1612852719000},"page":"16-23","update-policy":"https:\/\/doi.org\/10.5535\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["The Clinical Features of Preschool Children With Speech and Language Disorder and the Role of Maternal Language"],"prefix":"10.5535","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5022-6030","authenticated-orcid":true,"given":"Hyeong 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