Computer Access Assessment for Persons with Physical Disabilities: A Guide to Assistive Technology Interventions.
ABSTRACT An innovative flowchart, called the computer access assessment, is proposed for rehabilitative professionals to perform a
comprehensive assessment when determining appropriate assistive technology devices for persons with physical disabilities.
According to clients special needs, we reconstruct a new computer access assessment with the following four components: (1)
seating and positioning needs, (2) keyboard adaptation needs, (3) potential anatomical control site, and (4) mouse adaptation
needs. Advices about special equipment needs will be provided when following this flowchart. Two cases have been studied to
illustrate how to utilize computer access assessment to assist therapists in selecting appropriating devices and intervention
strategies for a given client.
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ABSTRACT: To know the directional efficiency of cursor moving is important for the purpose of guiding the rearrangement of icons and toolbars in the window environment. This rearrangement resolution can achieve better computer access especially in the clients with quadriplegia. However, the information about the directional efficiency of cursor movement is not clear even in the typical persons. Therefore, before surveying the quadriplegics, typical persons were researched in this study. Four typical persons simulated quadriplegics to operate trackball with their right dorsal hand and the kinematic parameters of cursor moving were measured. The single subject experimental research (SSER) with alternating treatments design was used to compare the effects of four cursor moving direction (right to left, down to up, left to right, and up to down) on the kinematic variables. The prior auto-correlation coefficients and Bartlett’s ratio values were computed to make sure there was no any series dependence between measuring points before conducting parametric one-way repeated measures ANOVAs. From analyzing the parameter of deviation from the straight line, velocity, movement unit and execution time, the efficiency to move on the horizontal direction (left to right or right to left) was better than move on the vertical direction (up to down or down to up). To further know the cursor kinematic performances in patients with quadriplegics will be important.Ergonomics and Health Aspects of Work with Computers, International Conference, EHAWC 2007, Held as Part of HCI International 2007, Beijing, China, July 22-27, 2007, Proceedings; 01/2007
Conference Proceeding: An Integrated Text Entry System Design for Severe Physical Disabilities.[show abstract] [hide abstract]
ABSTRACT: Text entry is an important and prerequisite skill for people to utilize the computer information technology; however, people with severe physical disabilities need appropriated text entry system to interact with computer. The authors designed a text entry system which integrated on-screen keyboarding and encoding technique. Furthermore, this integrated text entry system provided learning strategy and on-screen keyboard layout adaption tools. This study also introduced the effect of the application of this text entry system on two clients with severe physical disabilities. The results demonstrated that the text entry system benefited the clients.Computers Helping People with Special Needs, 12th International Conference, ICCHP 2010, Vienna, Austria, July 14-16, 2010, Proceedings, Part II; 01/2010
Conference Proceeding: Performance of Different Pointing Devices on Children with Cerebral Palsy.[show abstract] [hide abstract]
ABSTRACT: With the popularization of graphical user interfaces (GUIs), pointing devices have become standard equipment of most computer systems. However, for people with motor impairments, accurate cursor control is often difficult or impossible to achieve. The focus of this study is to empirically compare effectiveness of three different pointing devices on children with cerebral palsy in order to select the most efficient device for each individual. Computerized Assessment Tool was developed to assess clients’ cursor control performance and to provide proper recommendations of pointing devices based on the results of assessments. Performance of pointing, clicking, and dragging of using different devices was measured. The results of this study indicated that Joystick seems to be the most effective device for children with cerebral palsy to perform cursor control tasks. However, factors such as each participant’s experience and preference may be related. The instrument use in this study, CAT, seems to be a convenient tool for rehabilitation therapists to assess clients’ cursor control performance. Replication of this study using a larger sample size, or recruiting clients with different diagnosis and various ages should be developed.Universal Access in Human-Computer Interaction. Applications and Services, 4th International Conference on Universal Access in Human-Computer Interaction, UAHCI 2007 Held as Part of HCI International 2007 Beijing, China, July 22-27, 2007 Proceedings, Part III; 01/2007