2026-09-22T06:19:06Zhttps://dora.dmu.ac.uk/server/oai/requestoai:dora.dmu.ac.uk:2086/107082019-03-20T04:17:17Zcom_2086_2388col_2086_2389
A usability assessment of a specific alternative computer input device for users with spinal cord injuries
Tsai, Dilys Tsai-Hsuan
The salient point of this research was to investigate the key factors of assistive devices
for people with severe physical disabilities, i.e. spinal cord injury, when selecting and
using an input device. The area of study was also concerned with validating a new
computer device to enable those individuals with upper-limb impairments to engage the
benefits of computer technology, via both user-issue and scientific-based evaluations.
A specific methodology, concermng both user-Issue and scientific-evidence, was
proposed for the studies related to assistive technology outcome measures. In order to
validate the proposed methodology, the research work began with an in-depth survey
(Study A), to give an insight into the present selection and utilisation of input devices
among those computer users with spinal cord injuries and identify their specific needs
when using a computer. Following the findings of this contextual survey, a SCI users'
needs hierarchy was proposed for input device selection and use. Specific touchscreen
devices, which matched the criteria in the hierarchy, were suggested as a possible
solution for users with severe upper-limb disorders. Then, a series of user-centred
validation studies, involving a pilot simulation study associated with a dimensional
issue of an input device (Study B), followed by usability evaluations at the introductory
phase (Study C), after short-term use and training (Study D) and after longer-term use
and outcome comparisons (Study E), were carried out. The user perspectives and
scientific data obtained from the usability assessments form the SCI subjects were used
not only to demonstrate the effectiveness and efficiency of the assistive device, but also
to fill the gap between the merely psychological/psychosocial-based measures and the
merely scientific-focus evaluation.
By merging a specific research technique and a systematic measuring procedure, a
conceptual model for evaluating assistive technology outcome measures has been
provided for this field of study. Moreover, this research has shown that the integration
of user-issue and scientific-evidence can increase the reliability and validity of this type
of device outcome measures and, therefore, attain a good match between users and the
technology employed.
De Montfort University
2006
Thesis or dissertation
Doctoral
PhD
en
http://hdl.handle.net/2086/10708
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