本研究主要在調查臺灣中部地區學齡前唐氏症兒童語言發展情形，並探討唐氏症兒童語言發展與其他行為發展的相關性。以中部地區30位學齡前唐氏症兒童為對象，使用「中國學齡前兒童行為發展量表」為研究工具。唐氏症兒童開始口語的年齡平均是第26個月，開始走路在第23個月。學齡前唐氏症兒童在語言理解方面以能理解簡單句子比例最高，語言表達方面以能表達字彙、短句為最多。構音異常的比例為93.3%( 以歪曲音最多)，音聲異常比例為26.7%。整體而言，各項行為發展(包括粗動作等8項) 只有精細動作發展一項未達確定遲緩標準，其他均確定遲緩，其中又以溝通表達、概念理解、人際社會行為三項最為嚴重。溝通表達與其他發展(除一般發展外) 均有相關，其中與精細動作及概念理解的相關性很高。
This study was to investigate the language development of preschoolers with Down's syndrome in the middle Taiwan and to explore the correlation between the language development and other behavioral developments. Thirty preschoolers with Down's syndrome in the middle Taiwan were included in this study and the "Scale of Behavioral Development of Preschoolers in China" were used as the main instrument. The subjects started to speak first word in the 26th month and started to walk in the 23rd month. In language comprehension, most of the preschoolers with Down's syndrome could understand the simple sentences. Basic vocabulary and short words are most common in their language expression. The abnormaliyt rate of sound structure was 93.3% (distorted sound largely), while the abnormality rate of tone was 26.7%. As a whole, only fine motor did not fulfil the standard of retard among all behavioral developments (including gross motor totally in eight categories), while the others were seen with distinctive slowness, particularly in communicative expressions, comprehension of concept and social behavior in human relations. The communicative expression and other developments (excluding developments in general) were significantly correlated, and there was a closed relation between expression with fine motor and comprehension of concept therein.
