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第三篇 規 劃. 7. 管理者是 決策者 Decision Making. 各節重點. 7.1 描述決策過程的八個步驟. 7.2 解釋管理者做決策的四種方式. 7.3 定義決策及制定情境. 7.4 描述不同的決策模式和影響決策的謬誤. 7.5 確認有效決策的技巧. 7.1. 決策的 程序 The Decision Making Process . 決策 本身 與公司 組織可以做什麼,或能做什麼息息相關 。
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第三篇 規 劃 7 管理者是決策者 Decision Making 各節重點 7.1 描述決策過程的八個步驟 7.2 解釋管理者做決策的四種方式 7.3 定義決策及制定情境 7.4 描述不同的決策模式和影響決策的謬誤 7.5 確認有效決策的技巧
7.1 決策的程序 The Decision Making Process • 決策本身與公司組織可以做什麼,或能做什麼息息相關。 • The decisions play an important role in what an organization has to do or is able to do. • 組織內每個人,無論在哪一個層級或身處何處,皆需要做決策 (decision),也就是需在兩個或多個方案中做選擇。 • Managers at all levels and in all areas of organizations make decision. That is, they make choices. • Problem - an obstacle that makes it difficult to achieve a desired goal or purpose. • Decision - making a choice from two or more alternatives.
步驟1:界定問題 Identifying a Problem • 團隊效能不彰、客戶棄我們而去、所做的計畫不再重要。決 • 策制定的過程從發現問題 (problem) 開始,也就是發現理想 • 情況與現實狀況之間存在了某種差距。 • Your team is dysfunctional, your customers leaving, or your plans are no longer relevant. Every decision starts with a problem, a discrepancy between an existing and a desired condition. • Characteristics of Problems • A problem becomes a problem when a manager becomes aware of it. • There is pressure to solve the problem. • The manager must have the authority, information, or resources needed to solve the problem.
步驟2 :設立決策準則 Identifying Decision Criteria • 管理者一旦界定問題後, 接下來就是確認決策準則,管理者必須決定那些因素是與決策相關的。 • Once a manager has identified a problem, manager must identify the decision criteria that are important or relevant to solving the problem, such as : • Costs that will be incurred (investments required) • Risks likely to be encountered (chance of failure) • Outcomes that are desired (growth of the firm)
步驟3:決定準則權重 Allocating Weight to the Criteria • 如果前一步驟的各個決策準則重要性並不一致,那麼決策者就必須決定準則的權重,以便在決策中區分輕重緩急。 Important Decision Criteria Decision criteria are not of equal importance: • Assigning a weight to each item places the items in the correct priority order of their importance in the decision-making process.
步驟4:發展方案 Developing Alternatives • 要求決策者列出問題的各種可行方案,在本步驟中並不會對各方案加以評估,而只是將方案列出。 Identifying viable alternatives: • Alternatives are listed (without evaluation) that can resolve the problem.
步驟5:分析方案 Analyzing Alternatives • 一旦找出可行方案後,決策者應該審慎評估每一個方案,並根據步驟2 所發展的準則,透過這樣的分析,每個方案的優劣即可清楚呈現。 Appraising each alternative’s strengths and weaknesses • An alternative’s appraisal is based on its ability to resolve the issues related to the criteria and criteria weight.
步驟6:選擇方案 Selecting an Alternative • 第6 個步驟是從上述的各種方案中,選出最佳的解決方案。 • Choosing the best alternative • The alternative with the highest total weight is chosen. 步驟7:執行方案 Implementing the Alternative • 此步驟強調的是將決策付諸行動,執行包括將方案有關的訊 • 息傳給相關的人士,並獲得他們的認同與承諾。 Putting the chosen alternative into action • Conveying the decision to and gaining commitment from those who will carry out the alternative
步驟8:評估決策的效能 Evaluating Decision Effectiveness • 決策過程最後一個步驟,是檢視決策結果是否解決了問題,亦即步驟6所選定的方案與步驟7的執行是否達到預期的效果。 The soundness of the decision is judged by its outcomes. • How effectively was the problem resolved by outcomes resulting from the chosen alternatives? • If the problem was not resolved, what went wrong?
7.2 管理者也是決策者 Managers Making Decisions • 組織的每個人都在做決策,但對於管理者,決策是其工作中特別重要的一部分。 • Although everyone in an organization makes decisions, decision making is particularly important to managers. • 管理者所做的任何事情幾乎都包含了決策,且大部分決策是例行性的。就像你每天決定何時吃晚餐,這種決策簡單而可以立即處理,因為你已做過上千次同樣的決策,讓你幾乎忘了它也是一種決策。 • Almost everything a manager does involves making decisions. And most decision making is routine. Even though a decision seems easy or has been faced by a manager a number of time before, it still is a decision.
理性的決策 Rational Decision-Making • 理性決策模式 (rational decision making),也就是以公司價值最大化為目標,應用邏輯性且一致性的決策。 • Rational Decision-Making — describes choices that are logical and consistent while maximizing value. Deadly Snowstorm over Mt. Everest Over 200 Dead Bodies on Mount Everest George Mallory missing in 1924
有限理性的決策Bounded Rationality • 管理者決策的模式是有限理性(bounded rationality),在個人資訊處理能力的限制下,某限制範圍內做出完全理性的決策,原因是因為管理者不會有完整的資源分析所有的方案,因此,只要所做的決策還差強人意就行了,也就是滿意解(satisfice)的說法,此模式下不太可能有最佳解。 Bounded Rationality - decision making that’s rational, but limited (bounded) by an individual’s ability to process information. Satisfice - accepting solutions that are “good enough.”
直覺式的決策 Intuitive Decision-Making • 直覺式決策是一種由個人經驗和判斷累積而成的潛意識決策方式。 • Intuitive decision- making — Making decisions on the basis of experience, feelings, and accumulated judgment.
以事證管理為依據的決策 The Role Of Evidence-Based Management • 事證管理的決策,亦即系統性的應用可獲得事證,以改善管理實務。 • Evidence-Based Management, EBMgt, is the “systematic use of the best available evidence to improve management practice.” • EBMgt有四個要素:(1) 決策的專業及判斷;(2) 管理者評估的外部事證;(3) 意見、喜好、股東價值;(4) 相關的內部因素:包括環境、組織成員。 • The four essential elements of EBMgt are : (1) the decision maker’s expertise and judgment; (2) external evidence that’s been evaluated by the decision maker; (3) opinions, preferences, and values of those who have a stake in the decision; (4) and relevant internal factors such as context, circumstances, and organizational members.
7.3 決策及決策情境的類型 Types of Decisions and Decision- Making Conditions 結構良好的問題和程式化決策 Structured Problems and Programmed Decisions • 結構良好的問題 (structured problems),因為它們是很直接、熟悉而容易界定的。 • Structured Problems are straight-forward, familiar, and easily defined. • 程式化決策 (programmed decision),程式化決策適用於重複或例行的情境。 • programmed decision — a repetitive decision that can be handled by a routine approach. Ex : 搭交通車上班
程序 (procedure) 是指管理者用來處理結構化問題的一系列相互關連的步驟。 • Aprocedure is a series of sequential steps a manager uses to respond to a structure problem.Ex : 大學註冊手續 • 規則 (rule) 是限定管理者行事範圍的明示條文。 • A rule is an explicit statement that tells a manager what can or cannot be done. • 政策 (policy)提供管理者在特殊情境下的思考指引。 • Policy is a guideline for making a decision. In contrast to a rule, a policy establishes general parameters for the decision maker rather than specifically stating what should or should not be done.Ex : 退貨政策
非結構的問題和非程式化決策 Unstructured Problems and Nonprogrammed Decision • 組織所面臨的許多情況是屬於非結構的問題,亦即該問題是新的、不常見的,相關的資訊也不完全。 Ex : 颱風天上班? • Many organizational situations involve unstructured problems, which are problems that are new or unusual and for which information is ambiguous or incomplete. • 當問題的結構不良時,管理者常須以非程式化決策的方式,發展出特定的解決辦法。非程式化決策係處理特殊、不常發生的問題,需量身訂製特別的解決方案。 • When problems are unstructured, managers must rely on non-programmed decision making in order to develop unique solutions. Non-programmed decisions are unique and nonrecurring and involve custom-made solutions.
決策情境 Decision-Making Situations 確定情況 Certainty • 決策時所面臨的最理想狀況就是確定的情境,亦即所有可能方案的結果都是已知。 • A situation in which a manager can make an accurate decision because the outcome of every alternative choice is known. 風險情況 Risk • 較常見的情況是有風險的存在,所謂風險,是指決策者可以預估各方案成敗與結果的機率。 • A situation in which the manager is able to estimate the likelihood (probability) of outcomes that result from the choice of particular alternatives.
不確定情況 Uncertainty 如果你要作一項決策,卻發現對可能的結果與機率一無所知時,我們稱這種為不確定情況。 What happens if you face a decision where you are not certain about the outcomes and can’t even make reasonable probability estimates? We call this condition uncertainty.
7.4 決策風格 Decision-Making Styles 線性-非線性思考 Linear – Nonlinear Thinking • 線性思考 (linear thinking style) 以外部資料為依據,並以理性、邏輯性思考來做決策並行動。 Ex : 依據財報投資 • Linear Thinking Style - a person’s tendency to use external data/facts; the habit of processing information through rational, logical thinking. • 非線性思考 (nonlinear thinking style) 則是以感受或直覺性等內在資訊為主,直覺的做判斷和行動。 Ex : 彩券隨機選號 • Nonlinear Thinking Style - a person’s preference for internal sources of information; a method of processing this information with internal insights, feelings, and hunches.
決策謬誤 Decision-Making Biases and Errors • 管理者制定決策時,不僅是採用個人特有的決策風格,許多人運用經驗法則或直覺 (heuristics) 以簡化決策過程。 • Managers not only use their own particular style, they may use “rules of thumb”, or heuristics, to simplify their decision making.
當決策者傾向認為他們知道的比做的多,或對自己本身與所能貢獻績效抱持不切實際的正面看法,便出現過度自信偏差。當決策者傾向認為他們知道的比做的多,或對自己本身與所能貢獻績效抱持不切實際的正面看法,便出現過度自信偏差。 • Overconfidence Bias - holding unrealistically positive views of oneself and one’s performance. • 立即滿意偏差 決策者追求立即的回報並避免立即的成本,這類型決策者會選擇提供立即報酬的方案,而不考慮到未來。 • Immediate Gratification Bias - choosing alternatives that offer immediate rewards and avoid immediate costs. • 定錨效應 是指決策者會執著於決策初期所接收到的資訊,而無法因應後續接收到的資訊而調整決策方向。 • Anchoring Effect - fixating on initial information and ignoring subsequent information.
當決策者以既有偏見選擇性來組織並詮釋事件,便產生選擇性觀點偏差。當決策者以既有偏見選擇性來組織並詮釋事件,便產生選擇性觀點偏差。 • Selective Perception Bias - selecting, organizing and interpreting events based on the decision maker’s biased perceptions. • 佐證偏差決策者會不斷蒐集資訊來佐證之前的決策,並對反駁先前決策的資訊大打折扣。 • Confirmation Bias - seeking out information that reaffirms past choices while discounting contradictory information. • 框依偏差是指決策者會選擇並凸顯問題情境的某幾個面向,而忽略其他面向。 • Framing Bias - selecting and highlighting certain aspects of a situation while ignoring other aspects.
接近性偏差指決策者傾向回憶最近發生且印象最深刻的事件。接近性偏差指決策者傾向回憶最近發生且印象最深刻的事件。 • Availability Bias - losing decision-making objectivity by focusing on the most recent events. • 當決策者判斷一件事情的機率,是以參考與這件事類似的其他事件為基準,稱為重現偏差。 • Representation Bias - drawing analogies and seeing identical situations when none exist. • 隨機偏差是指管理者試圖從隨機發生的事件中創造意義。 • Randomness Bias - creating unfounded meaning out of random events.
沈沒成本錯誤是指決策者忘記現階段的決策不能修正過去。沈沒成本錯誤是指決策者忘記現階段的決策不能修正過去。 • Sunk Costs Errors - forgetting that current actions cannot influence past events and relate only to future consequences. • 若決策者急於將功勞歸諸自己,卻將失敗怪罪別人,則稱為自私偏差 。 • Self-Serving Bias - taking quick credit for successes and blaming outside factors for failures. • 後見之明偏差 是指決策者在事件結果已經真正揭曉時,才無根據地認為他們應該可以準確的預測到事件的最終結果。 • Hindsight Bias - mistakenly believing that an event could have been predicted once the actual outcome is known (after-the-fact).
7.5 現代社會的有效決策 Decision Making for Today’s World 在目前步調快速的企業環境中,管理者如何制定決策? What do managers need to do to make effective decisions in today’s fast moving world? • 瞭解文化差異 • Understand cultural differences • 知道何時該放棄 • Know when it’s time to call it quits • 當一個有效能的決策者 • Use an effective decision making process • 建立察覺環境變異時,可以迅速調整的組織 • Build an organization that can spot the expected and quickly adopt to the changed environment.