Publication statistics
Pub. period:2002-2011
Pub. count:9
Number of co-authors:14
Co-authors
Number of publications with 3 favourite co-authors:
Patrick Langdon:4Simeon Keates:4Nic Hollinworth:3 Productive colleagues
Faustina Hwang's 3 most productive colleagues in number of publications:
Peter Robinson:47Helen Petrie:38Gerhard Weber:36
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Faustina Hwang
Publications by Faustina Hwang (bibliography)
Hollinworth, Nic and Hwang, Faustina (2011): Cursor relocation techniques to help older adults find 'lost' cursors. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 863-866.
“Older adult computer users often lose track of the mouse cursor and so resort to methods such as mouse shaking or searching the screen to find the cursor again. Hence, this paper describes how a standard optical mouse was modified to include a touch sensor, activated by releasing and touching the mouse, which automatically centers the mouse cursor to the screen, potentially making it easier to find a 'lost' cursor. Six older adult computer users and six younger computer users were asked to compare the touch sensitive mouse with cursor centering with two alternative techniques for locating the mouse cursor: manually shaking the mouse and using the Windows sonar facility. The time taken to click on a target following a distractor task was recorded, and results show that centering the mouse was the fastest to use, with a 35% improvement over shaking the mouse. Five out of six older participants ranked the touch sensitive mouse with cursor centering as the easiest to use.”
© All rights reserved Hollinworth and Hwang and/or their publisher
Hollinworth, Nic and Hwang, Faustina (2010): Relating computer tasks to existing knowledge to improve accessibility for older adults. In: Twelfth Annual ACM SIGACCESS Conference on Assistive Technologies 2010. pp. 147-154.
“Routine computer tasks are often difficult for older adult computer users to learn and remember. People tend to learn new tasks by relating new concepts to existing knowledge. However, even for 'basic' computer tasks there is little, if any, existing knowledge on which older adults can base their learning. This paper investigates a custom file management interface that was designed to aid discovery and learnability by providing interface objects that are familiar to the user. A study was conducted which examined the differences between older and younger computer users when undertaking routine file management tasks using the standard Windows desktop as compared with the custom interface. Results showed that older adult computer users requested help more than ten times as often as younger users when using a standard windows/mouse configuration, made more mistakes and also required significantly more confirmations than younger users. The custom interface showed improvements over standard Windows/mouse, with fewer confirmations and less help being required. Hence, there is potential for an interface that closely mimics the real world to improve computer accessibility for older adults, aiding self-discovery and learnability.”
© All rights reserved Hollinworth and Hwang and/or their publisher
Hollinworth, Nic and Hwang, Faustina (2009): Learning how older adults undertake computer tasks. In: Eleventh Annual ACM SIGACCESS Conference on Assistive Technologies 2009. pp. 245-246.
“This paper describes a study that was conducted to learn more about how older adults use the tools in a GUI to undertake tasks in Windows applications. The objective was to gain insight into what people did and what they found most difficult. File and folder manipulation, and some aspects of formatting presented difficulties, and these were thought to be related to a lack of understanding of the task model, the correct interpretation of the visual cues presented by the interface, and the recall and translation of the task model into a suitable sequence of actions.”
© All rights reserved Hollinworth and Hwang and/or their publisher
Hwang, Faustina, Batson, Helen and Williams, Nitin (2008): Bringing the target to the cursor: proxy targets for older adults. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 2775-2780.
“Studies in the literature have proposed techniques to facilitate pointing in graphical user interfaces through the use of proxy targets. Proxy targets effectively bring the target to the cursor, thereby reducing the distance that the cursor must travel. This paper describes a study which aims to provide an initial understanding of how older adults respond to proxy targets, and compares older with younger users. We found that users in both age groups adjusted to the proxy targets without difficulty, and there was no indication in the cursor trajectories that users were confused about which target, i.e. the original versus the proxy, was to be selected. In terms of times, preliminary results show that for younger users, proxies did not provide any benefits over direct selection, while for older users, times were increased with proxy targets. A full analysis of the movement times, error rates, throughput and subjective feedback is currently underway.”
© All rights reserved Hwang et al. and/or ACM Press
Petrie, Helen, Power, Chris, Adams, Ray, Hwang, Faustina, Weber, Gerhard, Darzentas, Jenny and Velasco, Carlos A. (2008): Innovations in Measuring Accessibility: Theoretical and Practical Perspectives. In: Proceedings of the HCI08 Conference on People and Computers XXII 2008. pp. 197-198.
“Recently, there has been an increased awareness in the general public, in government and in business that people with disabilities and older people have distinct needs and preferences that must be met in order for them to participate as equal members of environments incorporating information and communications technologies. With this increased awareness has come legislation and company policies stating the necessary provision of accessible systems for disabled and older people in all facets of society. In order for these policies to be properly implemented there is a need to further understand accessibility and its impact on the people and systems around us. This workshop will focus on exploring the concept of accessibility and the boundaries of accessibility research. It is intended to bring together individuals working in disparate fields of research to improve the definition of accessibility and to refine our understanding of the as yet unaddressed barriers in the information society such as the impact of mobile technology and the aging population.”
© All rights reserved Petrie et al. and/or their publisher
Hwang, Faustina, Keates, Simeon, Langdon, Patrick and Clarkson, P. John (2005): Movement time for motion-impaired users assisted by force-feedback: effects of movement amplitude, target width, and gravity well width. In Universal Access in the Information Society, 4 (2) pp. 85-95.
“This paper presents a study investigating how the performance of motion-impaired computer users in point and click tasks varies with target distance (A), target width (W), and force-feedback gravity well width (GWW). Six motion-impaired users performed point and click tasks across a range of values for A, W, and GWW. Times were observed to increase with A, and to decrease with W. Times also improved with GWW, and, with the addition of a gravity well, a greater improvement was observed for smaller targets than for bigger ones. It was found that Fitts' Law gave a good description of behaviour for each value of GWW, and that gravity wells reduced the effect of task difficulty on performance. A model based on Fitts' Law is proposed, which incorporates the effect of GWW on movement time. The model accounts for 88.8% of the variance in the observed data.”
© All rights reserved Hwang et al. and/or Springer Verlag
Hwang, Faustina, Keates, Simeon, Langdon, Patrick and Clarkson, John (2004): Mouse movements of motion-impaired users: a submovement analysis. In: Sixth Annual ACM Conference on Assistive Technologies 2004. pp. 102-109.
“Understanding human movement is key to improving input devices and interaction techniques. This paper presents a study of mouse movements of motion-impaired users, with an aim to gaining a better understanding of impaired movement. The cursor trajectories of six motion-impaired users and three able-bodied users are studied according to their submovement structure. Several aspects of the movement are studied, including the frequency and duration of pauses between submovements, verification times, the number of submovements, the peak speed of submovements and the accuracy of submovements in two-dimensions. Results include findings that some motion-impaired users pause more often and for longer than able-bodied users, require up to five times more submovements to complete the same task, and exhibit a correlation between error and peak submovement speed that does not exist for able-bodied users.”
© All rights reserved Hwang et al. and/or ACM Press
Hwang, Faustina, Keates, Simeon, Langdon, Patrick and Clarkson, P. John (2003): Multiple haptic targets for motion-impaired computer users. In: Cockton, Gilbert and Korhonen, Panu (eds.) Proceedings of the ACM CHI 2003 Human Factors in Computing Systems Conference April 5-10, 2003, Ft. Lauderdale, Florida, USA. pp. 41-48.
Keates, Simeon, Hwang, Faustina, Langdon, Patrick, Clarkson, P. John and Robinson, Peter (2002): Cursor measures for motion-impaired computer users. In: Fifth Annual ACM Conference on Assistive Technologies 2002. pp. 135-142.
“"Point and click" interactions remain one of the key features of graphical user interfaces (GUIs). People with motion-impairments, however, can often have difficulty with accurate control of standard pointing devices. This paper discusses work that aims to reveal the nature of these difficulties through analyses that consider the cursor's path of movement. A range of potential cursor measures was applied, and a number of them were found to be significant in capturing the differences between able-bodied users and motion-impaired users, as well as the differences between a haptic force feedback condition and a control condition. cursor measures found in the literature, however, do not make up a comprehensive list, but provide a starting point for analysing cursor movements more completely. Six new cursor characteristics for motion-impaired users are introduced to capture aspects of cursor movement different from those already proposed.”
© All rights reserved Keates et al. and/or ACM Press
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