雖然許多研究係使用科技接受模型，討論人們接受新資訊通訊科技之行為，並使用採用意願構念，去解釋消費者的科技採用行為，但不同於工作場合之使用者，消費者在採用新科技時，必須自己負擔金錢成本去購買新科技產品，不過只有少數的研究，討論消費者採用意願與購買意願之異同。本研究從過去有關科技採用行為之文獻中，分析整理出消費者在評估購買新科技產品過程中，有三個關鍵因素，分別為認知有用性，認知易用性與認知愉悅性，會正向影響消費者的採用意願，並進而形成購買意願；但同時有兩個關鍵因素，分別為認知風險性與認知支出性，會負向影響消費者的購買意願。本研究採取問卷調查法之實證研究，以PDA行動電話為問卷標的，經過結構方程模式統計分析後發現，認知有用性與愉悅性，對於消費者的採用意願，會產生較為顯著且正向的影響；而認知風險性與支出性，對於消費者的購買意願，會產生較為顯著且負向的影響。本研究建議，同時使用採用意願與購買意願，做為消費者採用新科技模式之依變項，較能完整解釋消費者之行為。本研究結果，不但延申科技接受模型之應用，並針對消費者採用新資訊通訊產品之行為，提供更為深入而有用的模型。

Although many studies have applied the technology acceptance model (TAM) to discuss human adoption of information and communication technologies (ICTs) and use the construct of behavioral intention to explain consumers’ adoption behavior, few have investigated the distinction between adoption intention and purchase intention. Unlike the user’s technology acceptance behavior in the workplace, consumers have to personally purchase the product in order to experience an ICT innovation. This study applies the structural equation model to test hypotheses about PDA phones and finds that adoption and purchase intentions are distinct, and they have different antecedents. While perceived usefulness and enjoyment have more significant effects on adoption intention, perceived risk and expense have more significant effects on purchase intention. The adoption intention widely used in TAM studies is not enough to explain consumers’ adoption behavior. The results of this paper extend TAM studies and offer more insight into consumers’ adoption behavior regarding ICT products.

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