本研究旨在探討運用替代性溝通系統搭配證據本位策略的使用藉以提升多重障礙幼兒溝通表達能力之成效。採單一受試跨行為多基準線設計，研究對象為一位五歲兩個月多重障礙幼兒。研究的介入方法為替代性溝通系統及證據本位策略的使用，目標行為為個案溝通能力與不適切行為的表現。以自編溝通行為紀錄表，針對介入進行前、中、後進行資料蒐集並將所得資料量化後，進行目視法分析以評估其介入成效。研究結果顯示替代性溝通系統介入後，溝通行為有進步但其資料不穩定。此外，介入前後可觀察到因溝通問題所產生不適切行為有降低的情形。

The purpose of this study was to utilize the alternative communication system with evidence-based strategies to promote communication and expression abilities for a child with multiple disabilities. This study used single-subject multiple baseline across behaviors design. The participant was a five-year two months old child with multiple disabilities. The intervention was utilized alternative communication system and evidence-based strategies, and the targeted behaviors were the communication abilities and inappropriate behaviors. Data collection has been used self-made communication behavior record form throughout implementing this study, and the visual analysis has been used to analyze the outcomes of intervention. The results revealed that alternative communication system might improve communication behaviors, but the effects were not stable. In addition, we found that this intervention can reduce inappropriate behaviors caused by communication problems.