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Preference and visual cognitive processing demands of alphabetic and QWERTY keyboards of individuals with and without brain injury
Assistive Technology ( IF 2.170 ) Pub Date : 2020-10-13 , DOI: 10.1080/10400435.2020.1826006
Jessica Gormley 1 , Susan Koch Fager 2
Affiliation  

ABSTRACT

Following a severe brain injury (BI), some literate individuals who require augmentative and alternative communication (AAC) strategies to support communication may benefit from the use of onscreen keyboards to generate text. A range of layouts are available to these individuals within specialized communication software. However, a paucity of information is available to describe user preferences, user perceptions, as well as the visual-cognitive processing demands of such layouts. Such information is critical to guide clinical decision-making for keyboard selection and to provide patient-centered services. This study: (a) described the preferences and perceptions of two onscreen keyboard layouts (QWERTY and alphabetic) and (b) used eye-tracking analysis to investigate the visual-cognitive processing demands between these onscreen keyboards for individuals with and without BI. Results indicated participants in both groups held a strong preference for QWERTY keyboard interfaces and had extensive prior experience using the QWERTY keyboard layout on mobile devices. Eye-tracking analysis revealed less visual-cognitive processing demands using a QWERTY keyboard layout for both groups but were only statistically significant for those without BI. Results suggest that use of a keyboard layout that aligns with client preferences and prior experiences (i.e., the QWERTY keyboard for these participants) may lead to increased satisfaction with the communication experience and increased communication efficiency.



中文翻译:

有和没有脑损伤的个体的字母和 QWERTY 键盘的偏好和视觉认知处理需求

摘要

在严重脑损伤 (BI) 之后,一些需要辅助和替代交流 (AAC) 策略来支持交流的有文化的人可能会受益于使用屏幕键盘生成文本。在专门的通信软件中,这些人可以使用一系列布局。然而,缺乏信息可用于描述用户偏好、用户感知以及此类布局的视觉认知处理需求。这些信息对于指导键盘选择的临床决策和提供以患者为中心的服务至关重要。这项研究:(a) 描述了两种屏幕键盘布局(QWERTY 和字母)的偏好和感知,(b) 使用眼动追踪分析来调查这些屏幕键盘对于有和没有 BI 的个人的视觉认知处理需求。结果表明,两组的参与者都对 QWERTY 键盘界面有强烈的偏好,并且在使用移动设备上的 QWERTY 键盘布局之前拥有丰富的经验。眼动追踪分析显示,两组使用 QWERTY 键盘布局的视觉认知处理需求较少,但仅对没有 BI 的人具有统计学意义。结果表明,使用符合客户偏好和先前经验的键盘布局(即,

更新日期:2020-10-13
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