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Evaluation of an application for making palmtop computers accessible to individuals with intellectual disabilities
Steven E Stock1, Daniel K Davies, Katelyn R Davies
1AbleLink Technologies Inc., Colorado Springs, CO 80903, USA. steve@ablelinktech.com
Background:
Palmtop computers provide a promising mobile platform to address barriers to computer-based supports for people with intellectual disabilities. This study evaluated a specially designed interface to make navigation and features of palmtop computers more accessible to users with intellectual disabilities.
Method:
The specialised cognitively accessible interface was compared with a standard Windows CE interface. Participants completed a structured set of navigation/computer use tasks using both the experimental and control conditions. Measurements included the amount of assistance needed and errors made in completing the navigation/computer use tasks.
Results:
Participants (N = 32) made significantly fewer errors (p<.001) and required significantly fewer prompts (p<.001) while using the specialised software interface compared to the mainstream Windows interface.
Conclusions:
The research demonstrates the feasibility of using special software design methods, such as linear program flows, error minimisation and the incorporation of repetition and consistency, to improve access to palmtop computers for individuals with intellectual disabilities. Issues related to designing cognitively accessible interfaces are discussed.
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