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Performance-based functional assessment: integrating multiple perspectives

Published: 25 October 2010 Publication History

Abstract

The lack of quantifiable, reliable and repeatable methods for assessing functional capabilities of users with physical limitations creates challenges for accessibility researchers and practitioners. Current practice includes descriptors such as medical diagnoses, third-party observations, and self-assessment to characterize physical capabilities of information technology users. These solutions are inadequate due to similarities in functional capabilities between diagnoses, differences in capabilities within a diagnosis, and the potential for bias when characterizing functional capabilities. The current research examines performance-based functional assessment as an alternative to existing assessment techniques. Initial study results based on a single focus model (task efficiency) were reported earlier [1, 2]. This paper builds on that work, highlighting the benefits of integrating multiple perspectives such that both efficiency and anomalies are considered. A decision tree was produced combining results from several performance-based functional assessment models providing improved predictive capabilities.

References

[1]
PRICE, K.J. AND SEARS, A. 2008. Performance-based functional assessment: an algorithm for measuring physical capabilities. In Assets '08: Proceedings of the 10th international ACM SIGACCESS conference on Computers and accessibility ACM, New York, NY, USA, 217--224.
[2]
PRICE, K.J. AND SEARS, A. 2009. The Development and Evaluation of Performance-Based Functional Assessment: A Methodology for the Measurement of Physical Capabilities. Transactions on Accessible Computing 2, 1--31.
[3]
DITTMAR, S.S. AND GRESHAM, G.E. 1997. Functional assessment and outcome measures for the rehabilitation health professional. Aspen Publishers, Inc.
[4]
SEARS, A., YOUNG, M. AND FENG, J. 2007. The Human-Computer Interaction Handbook, A. SEARS AND J. JACKO Eds. CRC Press, 829--852.
[5]
BUXTON, W., FOULDS, R., ROSEN, M., SCADDEN, L. AND SHEIN, F. 1986. Human interface design and the handicapped user. In CHI '86: Proc. of the SIGCHI conf. on Human factors in computing systems ACM, New York, 291--297.
[6]
GREGOR, P., NEWELL, A.F. AND ZAJICEK, M. 2002. Designing for dynamic diversity: interfaces for older people. In Assets '02: Proc. of the fifth international ACM conf. on Assistive technologies ACM, New York, 151--156.
[7]
TREVIRANUS, J. AND PETTY, L. 2002. Clinician's guide to assistive technology, D.A. OLSON AND F. DERUYTER Eds. Mosby, 91--113.

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cover image ACM Conferences
ASSETS '10: Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility
October 2010
346 pages
ISBN:9781605588810
DOI:10.1145/1878803

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 25 October 2010

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Author Tags

  1. HCI
  2. accessibility
  3. functional assessment
  4. physical capabilities

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