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容易學習-第一次就能輕易學會操作
容易記憶-經過一段時間未使用後,能快速
地再次熟練操作
高操作效率-能快速且正確的完成任務
低錯誤程度與頻率-使用者不易出錯、即使
發生錯誤,不僅錯誤的嚴重性低,且能輕
易地從錯誤中回復
高滿意度-操作過程令使用者感到愉悅
Nielsen, Jakob. (1994). Usability engineering: Elsevier.
優使性與使用者測試 2
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使用者介面設計是一個逐步趨近最佳設計
的重複性過程,主要包含設計、優使性評
估與修改設計三個循環的階段
使用者介面設計過程中,優使性評估的目
標是雛型,即能夠呈現互動介面設計的特
點,並能實現部分或完整功能的設計實體
Newman等人(1995)認為,對設計雛型進行
優使性評估是改進介面設計的有效途徑
Newman, W. M., Lamming, M. G., & Lamming, M. (1995). Interactive System
Design: Addison-Wesley Longman Publishing Co., Inc.
4優使性與使用者測試
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改進現有產品介面,提高其優使性
在設計新介面之前,對已有介面進行優使
性評估,借鑒優點,改進缺點,更有效的
達到優使性目標
5優使性與使用者測試
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使用者測試(User Testing)
招募受試者,於特定平台(桌機/行動電話)上操作
不同版本之雲端系統執行指定任務,根據任務
訂定績效指標並紀錄之
專家評估(Expert Evaluation)
具備使用者介面優使性評估經驗之專家,分別
以認知走查(Cognitive walk through)方式,操作不同
版本之雲端系統介面後, 針對所有找到的問
題點進行討論,整合評估者的共同意見,並提
出改進的方法
6優使性與使用者測試
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通過觀察有代表性的使用者,完成產品的
典型任務,而界定出優使性問題並加以解決
8優使性與使用者測試
http://www.infragistics.com/community/blogs/ux/archive/2012/11/07/6-tools-for-remote-
unmoderated-usability-testing.aspx
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選擇測試
產品與
功能
制訂關鍵
任務與評
量指標
招募受試
者執行優
使性測試
分析測試
結果
9優使性與使用者測試
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優使性與使用者測試

Editor's Notes

  1. 適用於設計原型或成品 量化測試、觀察、記錄和分析使用者行為和相關資料
  2. 網站流量轉換率(ConversionRate)是指訪問某一網站的訪客中,轉化的訪客占全部訪客的比例 根據 Google Analytics 官方網站說明頁面的定義、所謂跳出率 Bounce Rate 是指進入您網站後在特定時間*內只瀏覽了一個網頁就離開的訪客百分比。所以…我們當然很自然的會認為、網頁跳出率越高就代表我們的網頁似乎越留不住訪客也越沒有價值。