本研究旨在了解唐氏症青少年的性社會行為，並與非唐氏症同儕進行比較。研究對象主要來個臺灣地區特殊/啟智學校中度知障學生，共計國中及高職部124名。採配對分組方式(主要是依智商、性別及教育程度變項進行配對)，其中一半是唐氏症學生組(DS)，另一半是非唐氏症中度智障學生組(ND)。採用自編的「圖書性知識量表」、「圖書性社會行為量表」，以及「圖書性社會興趣量表」，進行蒐集資料。透過SPSS套裝軟體鎔行分析，結果發現：(1)性知識方面，唐氏症學生和其他中度智障同儕程度相當；女生雖有優於男生的趨勢，但未達顯著水準；性知識程度與教育程度有關，即高職生優於國中生；(2)性社會行為方面，唐氏症青少年的兩性互動經驗顯著較ND組頻繁，且男生亦女生積極，但此結果與教育程度關無；此外，在互動對象上，ND組只限於家人、同學、親友及熟識，而DS組則擴及於陌生人；(3)性社會興趣方面，唐氏症學生的與非唐氏症組相同；性別上，男興趣高於女生；另外教育程度也有關聯，即高職生的興趣高於國中生。

　　　　　The main purpose of the present study was to investigate the socio-sexual behaviors of adolescents and thereby compare details of the targeted behaviors of those with down syndrome and with their matched counterparts without Down syndrome. Participants came from day schools around Taiwan, were screened by the following criteria: (a)with moderate mental retardation, and (b)at the high school level, assigned either DS group or ND group based on their IQs and educational levels. Three Instruments were used in the study, developed by the researcher, and characterized by illustrations and drawings, including (a) The Illustrated Sex Knowledge Questionnaire, (b)The Illustrated Socio-Sexual Behavior Questionnaire, and (c) The Illustrated Socio-Sexual Interest Questionnaire. Some of the findings were interesting, such as (a)both groups were comparable in their sec knowledge scores, with no gender difference; (b) The DS group were far more active in their socio-sexual behaviors than their counterparts, with a gender difference; and (c) in terms of socio-sexual interest, no difference was found between groups. Implications were further discussed.