即時通訊軟體已隨著網路基礎建設佈建成熟及寬頻的普及，成為網路使用族群對外聯繫、交流訊息重要的管道之一，應用的範圍更加延伸至企業內部、商業活動。本研究的目的，主要是從知識分享的觀點，探討在工作職場的情境，個人藉由即時通訊軟體的使用，是否有助於增進工作伙伴彼此間知識分享的成效。由於在現階段企業對於內部使用即時通訊軟體存在著正反兩極化評價，本研究結果可提供管理者對於組織內部是否限制即時通訊軟體的使用，有一個管理上的參考依據。

本研究使用問卷為量測工具，以從事工作任務時會使用即時通訊軟體的工作者為主要研究對象。研究結果顯示，即時通訊軟體「資訊豐富性」、「知識可及性」二知覺特性能直接地對於個體與工作伙伴彼此間知識分享成效有正面性影響；影響主要是在「知識分享滿意度」、「對知識的瞭解程度」、「對知識的運用程度」三方面。在間接性影響方面，即時通訊軟體所具有的「資訊豐富性」、「知識可及性」知覺特性也能降低「傳遞延遲性」、「空間性距離」、「社會性距離」等知識分享障礙，但降低知識分享障礙對分享成效的影響，僅有「社會性距離」對「對知識的瞭解程度」、「對知識的表達程度」有顯著性影響。

由研究結果可知，藉由即時通訊軟體的使用，能直接地增進工作伙伴彼此間知識分享的效率、使知識能有效傳遞；而由降低知識分享障礙間接性對增進知識分享成效的效果較不明顯，且與直接性影響所涉及的影響層面也有所不同。

This study examines the relationship between the perceived characteristics of instant messenger and the barriers of knowledge sharing. Two perceived characteristics are identified from instant messenger related to knowledge sharing such as Information Richness, and Knowledge accessibility. Three types of barriers in the knowledge sharing process such as Postponed transferring, Physical distance, and Social distance are also defined. An empirical study was then conducted to test the relationship between the perceived characteristics of instant messenger and three types of barriers in the knowledge sharing process. In addition, the impacts of barriers on the performance of knowledge sharing were examined.

The result shows that the Information Richness has negative impact on Physical distance, and the Knowledge accessibility has a significant negative impact on Social distance. It also shows that the Social distance is a significant factor influencing the description of knowledge and understanding of knowledge. Besides the result shows that Information Richness and Knowledge accessibility have a significant positive impact on the satisfaction of knowledge sharing, the utilization of knowledge, and the understanding of knowledge.

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