觸控互動對高齡者在編輯作業績效與使用經驗之影響

The Effect of Touch-based Interaction on Editing Performance and User Experience for Older Adults

林迪意(Dyi-Yih Lin) ； 王皇仁(Huang-Jen Wang)

《人因工程學刊》 17卷1期 (2015/11) Pp. 1-13

https://doi.org/10.6273/JES.2015.17(01).01

摘要

隨著科技發達，人機互動已由傳統滑鼠進化到以觸控為主的互動模式。這種直覺簡化的操控方式對認知與動作退化的高齡使用者似乎是一大福音，然而背後所牽涉的設備與作業等因素，適合高齡者之觸控互動設計仍有諸多需深入調查的議題。有鑒於此，本研究藉由廣被使用的編輯作業為基礎，探討不同控制模式與編輯需求下高齡者之優使性（usability）績效與使用者經驗。本研究募集15名65歲以上高齡受試者進行操控介面與編輯形態均為受試內因子之3×3因子實驗，操控介面包括觸控螢幕、觸控板與滑鼠(實驗控制組)等處理水準；編輯作業則包括全域選取複製編輯、特定區域選取複製編輯以及旋轉複製編輯等處理水準。優使性效標為實驗任務完成時間與失誤次數。使用者經驗則以1~10尺規（10代表最優）量測包括直覺性、愉悅性、自信、不疲勞感以及娛樂性等構面之主觀偏好。實驗結果顯示，觸控螢幕表現為最好，其操作時間最快而失誤次數最少；反之觸控板因為操作時間慢又失誤次數多為最差。滑鼠則依編輯作業而異，在全域選取時其績效與觸控螢幕無顯著差異，均明顯優於觸控板；但在旋轉作業時，其績效卻與觸控板無顯著差異，只有觸控螢幕獨具鰲頭。在主觀偏好部分，觸控螢幕則在所有直覺性、愉悅、自信、不疲勞感及娛樂性等均獲高齡者顯著較高之偏好。本文針對此結果提出高齡者適用之觸控互動設計準則與討論。

關鍵字

觸控介面 ； 人機互動 ； 高齡人因 ； 編輯作業

並列摘要

Touch devices have become a mainstream control mode in human-computer interaction particularly for older adults who are disadvantaged at computer-based activities. While touch control provides a seemingly intuitive way for interaction, how older users can actually benefit from such devices may bear implications more than just meet the eyes. The present study thus aims to investigate the usability and user experience of touch control for the older adult in editing that represent a typical computer activity. Fifteen subjects aged over 65 participated in a 3x3 factorial experiment where touch control and editing task were both designed as a within-subject factor. Touch control consisted of three treatment levels, namely, touch screen, touch pad, and mouse (as an experimental control). Editing task comprised copy editing for whole-area, designated-area and rotated-area. Usability performance was measured by task completion time and number of error occurred. User experience was assessed in terms of intuitiveness, pleasure, confidence, fatigue and entertainability by a 1-10 rating scale with 10 reflecting the most favorable. The results indicated that the touchscreen condition outperformed the touchpad for both measures with the mouse varying between the two counterparts depending on the type of the editing tasks tested. The touchscreen condition was also favored over the other two devices with respect to the five subjective preferences. Implications for the design of touch-based interaction for the older adult was discussed and summarized.

並列關鍵字

Touch-Based Interface ； Human-Computer Interaction ； Older Adults ； Edit