perceived usefulness, perceived ease of use, and user acceptance of information technology

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S Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology 指指指指 指指 指 指 指 指 指 1 s, F.D MIS Quarterly, 13(3), p.319-339, 1989.

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Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology. 指導教師:任 维 廉 報 告 者 :邱 辰.  Davis, F.D  MIS Quarterly, 13(3), p.319-339, 1989. 自我介紹. 自我介绍. Introduction. Introduction. 研究中兩個主要量度. 研究中兩個主要量度. 理論基礎回顧. 理論基礎回顧. 理論基礎回顧. 理論基礎回顧. 感知有用性問題. 量表的發展與前測. - PowerPoint PPT Presentation

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Perceived Usefulness,Perceived Ease of Use,and User Acceptance of Information Technology

指導教師:任维廉 報 告 者 :邱 辰

 Davis, F.D  MIS Quarterly, 13(3), p.319-339, 1989.

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自我介紹

四川大學 北京人

攝影,旅遊,魔方,網球,跑步認識更多朋友,學習更多知識

邱辰

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自我介绍

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Introduction

信息技術以及設備的使用能普遍提高工作效率但是,專業的技術阻礙了很多人去使用信息技術

研究使用者接受信息技術的使用和行為變得十分必要

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Introduction

以往的研究大多大多都是主觀測試,研究測試結果並不俱有效度

本研究的目的是找出一種方法,能夠有效的方法去測量使用者對於信息技術的使用

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研究中兩個主要量度

感知有用性(Perceived

Usefulness )感知易用性( Perceived

Ease of Use )

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研究中兩個主要量度

感知有用性使用信息系統,可有效改善工作效率使用越多,對系統的評價亦越高

感知易用性使用信息系統的容易程度使用越多,對系統評價亦越高

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理論基礎回顧

自我效能理論( Self-efficacy theory)

判斷是否有能力去完成某件事情 自我效能( Self-efficacy ), 感知有用性

Outcome , 感知易用性

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理論基礎回顧

成本效益典範 (Cost-benefit Paradigm)

行為決定理論中的成本效益典範亦和感知有用性和易用性有關

創新的採用 (Adoption of Innovations)

創新的採用中感知易用性扮演重要的角色

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理論基礎回顧通道配置模式 (Channel

disposition model

Value (important ,relevant,useful,valuable) 感知有用性

Accessibility (convenient,controllable,easy,unburdensome) 感知易用性

資料報告的評估(Evaluation of information

reports))

Perceived Importance 感知有用性

Perceived Usableness ( unburdensome) 感知易用性

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理論基礎回顧

使用者知覺選擇通訊科技產品,有二項基本的影響構面

Ease of use

Effectiveness

HCI (human-computer interaction)

此類研究大都將研究焦點放在感知易用性設計考量

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量表的發展與前測依據文獻產生 PU 與 PEOU 各 14 個候選問項利用前測將問項刪減至 10 項,以增加效度

感知有用性問題

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感知易用性的初始問題

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感知有用性的前測結果

A :工作效率 B :生產力與時間的節省 C :學習系統對工作的重要性

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感知易用性的结果

A :工作效率 B :生產力與時間的節省 C :學習系統對工作的重要性

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研究一針對 10 個問項分析信度、收斂效度、區別效度及因素效度

樣本來源 : 120 位 IBM 研發實驗室人員有用性及易用性調查 : PROFS 電子郵件系統及XEDIT 編輯軟體 2 項軟體

回收問卷 112 份 (93%)

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研究一Cronbach α 感知有用性 =0.97 ;感知易用性 =0.91

多重特質多方法 (MTMM)

收斂效度 (monotrait- )相同方法量測相同構面之結果應具高度相關 MTMM 不同方法量測相同構面之結果應具次高相關 MTHM

區辨效度 (heterotrait-)相同方法量測不同構面之結果應具低度相關 HTMM不同方法量測不同構面之結果應具最低度相關 HTHM

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MTHM

次高相關

HTMM

低度相關HTHM

最低相關

MTHM

次高相關

HTMM

低度相關HTHM

最低相關

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研究一

因素效度 ( 主成份法 ,斜交轉軸法 )

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研究二Cronbach α 感知有用性 =0.98 ;感知易用性=0.94

樣本來源 : Boston 大學 40 位 MBA 學生。軟體: Chart-Master 與 Pendraw( 繪圖軟體 )

因素效度:因素抽取 - 主成份分析法斜交轉軸法

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研究二

因素分析表

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结果分析有用性使用程度間的相關係數顯著大於易用性使用程度間的相關係數。

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结果分析迴歸分析:控制易用性的情況下,有用性對使用程度有顯著的影響;相對地,在控制有用性的情況下,易用性對使用程度卻無顯著性的影響。

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討論兩個因素是否足夠• 考慮更多變量是否只考慮接受程度• 應該增加別的考量現在的信息技術對研究幫助?• 不只是自我測試,而是用技術來實現測試

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最後

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