關係專屬性投資對台灣代工廠商而言是個重要議題，但過去研究大多從經濟理性探討忽略社會因素。本研究應用制度理論中模仿同形之觀點，認為次數基礎、特徵基礎與結果基礎的模仿因子，分別對關係專屬性投資有明顯的影響。此外，當廠商面臨較大績效期望落差時，為降低決策制訂過程之不確定性並提升其正當性，廠商會強化其模仿同形之行為。藉由161份台灣代工廠商之問卷調查，實證結果支持了模仿同形與關係專屬性投資之關聯性。

Relationship-specific investments (RSIs) are an important issue for Taiwanese OEM/ODM suppliers. Prior researches on this issue have primarily focused on economic rationality and overlooked sociological approaches. This study uses mimetic isomorphism perspectives and argues that frequency-based, trait-based and outcome-based mimetic factors each have important influences on the RSIs decision. Further, when firms face with greater performance aspiration gap,in order to reduce the uncertainty and enhance the legitimacy of decision-making processes, firms may enhance their mimetic isomorphism behavior. Using a sample of 161 Taiwanese OEM/ODM suppliers, we find empirical support for our developed theory.