當今企業在競爭日趨激烈且動態的環境下經常難以保有持續性競爭優勢；組織必須不斷地主動出擊、快速且準確地因應外部環境變動，並且積極回應對手的競爭行動，才能積小勝為大勝，維持本身的市場地位。尤其，如何在高度不確定性且資訊有限的條件下，制定有效的策略決策更是每家企業需要深思的課題。
本研究運用高層理論(upper echelons theory)，探討執行長與高階經營團隊的關係品質對決策共識的影響，以及決策共識在執行長與高階經營團隊關係品質及決策品質之間所扮演的中介角色；同時，本研究也檢視競爭張力這個動態競爭理論中的重要變數對執行長與經營團隊關係品質及決策共識關係的干擾效果。本研究分析單位為廠商層次，研究母體為台灣經濟新報中的上市、櫃與興櫃公司，研究樣本包含148家企業、377位高階主管。研究方法採用驗證性因素分析檢視整體理論模式的配適性，並且利用層級迴歸分析檢視假說的顯著性。分析結果顯示，整體理論模式具有良好的配適度，研究假說也大多獲得支持。更明確地說，良好的執行長與經營團隊關係品質有助於提升團隊的決策共識，同時決策共識在執行長與高階經營團隊關係品質及決策品質之間具有部分中介效果。至於干擾作用，研究結果顯示，雖然競爭張力整體的干擾效果不顯著，但在「高競爭張力組」競爭張力確實存在負向的干擾效果。
本研究具有重要的理論意涵。首先，以往高層理論大多將經營團隊視為一個整體，本研究則將執行長此一角色從中獨立出來，更細緻的探討經營團隊成員彼此間的互動過程。其次，以往研究並未將動態競爭觀點中的競爭變數視為一個干擾變數，本研究藉由檢視競爭張力的干擾效果，不僅延伸了動態競爭理論的範疇，也有效結合了高層理論及動態競爭觀點這兩個重要的策略管理論點。第三，藉由同時檢視決策共識與決策品質，本研究也擴大了策略選擇觀點的理論內涵。此外，本研究也具有豐富的實務意涵。最終也討論了研究限制與未來研究方向

Nowadays, competition is becoming increasingly intense and dynamic, making it difficult for firms to sustain competitive advantages. . In order to maintain their market position, firms need to unceasingly act and respond to the environmental and competitive challenges. As a result, how firms can make quality decisions under competitive pressure becomes a critical issue.
This study employs the upper echelons theory to examine the effect of CEO-TMT exchange quality on decision quality through the mediation of decision consensus and the moderation of competitive tension. The unit of analysis is at the firm level. Research sample was collected from 377 executives in 148 firms listed in the database of Taiwan Economic Journal (TEJ). Confirmatory Factor Analysis (CFA) and hierarchical regression were employed to test the overall fitness of the theoretical model and the hypothesized relationships, respectively. Analytical findings show that the theoretical model fits with the data very well, and most of our hypotheses are supported. Specifically, CEO-TMT exchange quality is found to be positively related with the decision consensus, which in turn can advance decision quality. Decision consensus also partially mediates the relationship of CEO-TMT exchange quality and decision quality. Although the moderating part of competitive tension was not supported, competitive tension indeed exerts a negative moderating effect in the high-tension subgroup.
This study has significant theoretical implications. First, by identifying the CEO from other TMT members, the study can more precisely capture the TMT dynamics and advance the upper-echelons theory. Second, our study first considers competitive tension as a moderator between CEO-TMT exchange and firm strategic decisions, which can advance the competitive dynamics perspective and help integrate the two prominent theories of upper echelons and competitive dynamics in the field of strategic management. Third, an integrated consideration of decision consensus and decision quality, the study advances the strategic choice perspective as well. Moreover, the study has some practical implications. Limitations and future directions are discussed as well.

論文審定書 i
誌謝 ii
中文摘要 iii
Abstract v
目錄 vii
圖次 viii
表次 ix
第一章 緒論 1
第一節 研究背景與動機 1
第二節 研究目的 4
第二章 文獻探討 6
第一節 理論基礎 6
第二節 研究變數 13
第三節 研究假說 19
第三章 研究方法 22
第一節 研究架構 22
第二節 研究樣本 23
第三節 研究假說彙整 28
第四節 變數操作性定義與測量工具 29
第六節 統計分析方法 33
第四章 實證分析與結果 35
第一節 評估資料加總正當性 35
第二節 驗證性因素分析 37
第三節 相關分析 38
第四節 層級迴歸分析 40
第五章 結論與建議 50
第一節 研究結果討論 50
第二節 研究意函 52
第三節 研究限制與未來研究方向 54
參考文獻 56
附錄 研究問卷 65

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