How Can Adding a Movement Improve Target Acquisition Efficacy?

Payne, A. P.; Plimmer, Beryl; McDaid, Andrew; Luxton-Reilly, Andrew; Davies, T. Claire

doi:10.1007/978-3-319-67687-6_34

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…The results showed that their eye gaze performance could be improved after a long-term practice. In order to help people with motor impairments for small target acquisition, (Payne et al 2017) measured and compared participants' performance under three conditions. One is using an assistive tool, and the other two are used to verify if the additional movements could improve the interaction efficacy.…”

Section: Existing Assessment Toolsmentioning

confidence: 99%

“…In addition, based on Fitts' law (Bachmann et al 2015) compared the user's performance with a mouse and a leap motion controller, which is a contact-free input system. Obviously, Fitts' law is a classical analysis method for the assessment of compute access tools (MacKenzie et al 1991), (Rao et al 2000), (Gump et al 2002), (Wobbrock and Gajos 2007), (Felzer et al 2016), (Pérez et al 2016), (Payne et al 2017), ). • In the third group of studies, the selection of devices or interfaces to be assessed, the design of experiment, the measurement of users' performance, and/or the analysis method, might be integrated to a platform or a software.…”

Section: Existing Assessment Toolsmentioning

confidence: 99%

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How does the dedicated software PLEIA provide computer access assessment for people with physical disabilities?

Wang

Rabreau

Boulesteix

et al. 2023

Univ Access Inf Soc

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Computer tools allow to ease the daily life of everyone, especially for people with disabilities. The optimal choice of pointing interfaces or types of settings can be difficult to achieve. Although there exist a few tests to compare and evaluate the performance of computer access technology (CAT), most of them only provide results as qualitative terms. Besides, the current choice is based mainly on clinical observations or non-standardized tests. To objectify the recommendations in CAT, support funding for people with disabilities and measure the functional repercussions of a therapeutic action, it is necessary to carry out comparative tests with measurable criteria. This paper presents the development of a personalized, free, and dedicated evaluation platform of pointing interfaces and assistances. The quantitative evaluation process is described in detail, such as the configuration of different exercises with settable parameters that permits to build a customized evaluation process with increased difficulties, the definition of performance indicators and the statistical analysis methods for quantified comparative tests. Finally, we present the assessment results of four people with different disabilities using multiple pointing interfaces, which verify the effectivity of this evaluation platform with the help of occupational therapists.

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Section: Existing Assessment Toolsmentioning

confidence: 99%

Section: Existing Assessment Toolsmentioning

confidence: 99%

How does the dedicated software PLEIA provide computer access assessment for people with physical disabilities?

Wang

Rabreau

Boulesteix

et al. 2023

Univ Access Inf Soc

View full text Add to dashboard Cite

show abstract

Longitudinal Study of Two Virtual Cursors for People With Motor Impairments: A Performance and Satisfaction Analysis on Web Navigation

et al. 2020

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The lack of dexterity in the upper limbs of people with motor impairments may prevent the use of standard pointing devices, such as mice, to access graphical user interfaces. In these cases, pointing and clicking are usually performed by means of alternative devices such as joysticks, trackballs or standard keyboards. However, target acquisition can still be challenging for this group of people due to their physical condition. Based on previous works, we developed two virtual cursors: the novel cross cursor and the standard area cursor. They are devoted to assist two different groups of users with link selection within web pages: keyboard-only users, and joystick and trackball users, respectively. Both virtual cursors have been evaluated and compared with the original unassisted cursor in a longitudinal study. Eight people with motor impairments participated in an unsupervised experiment from their own personal computers at home. For a period of six weeks, each participant used both a virtual cursor and the original unassisted cursor to freely navigate the Web, and to perform predefined target acquisition tasks. Interaction data was automatically logged throughout the study along with subjective assessments concerning the usability of the virtual cursor being tested. Results show significant improvements for both virtual cursors in six of the seven cursor parameters studied, albeit with performance variations between some participants. The virtual cursors were extensively used for free web navigation and in their subjective assessments both were positively endorsed by participants who also put forward improvement suggestions for future developments. INDEX TERMS Alternative pointing devices, human performance, longitudinal study, people with motor impairments, user satisfaction, virtual cursors, web accessibility.

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How Can Adding a Movement Improve Target Acquisition Efficacy?

Cited by 2 publications

References 26 publications

How does the dedicated software PLEIA provide computer access assessment for people with physical disabilities?

How does the dedicated software PLEIA provide computer access assessment for people with physical disabilities?

Longitudinal Study of Two Virtual Cursors for People With Motor Impairments: A Performance and Satisfaction Analysis on Web Navigation

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