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Human Factors Design Guidelines for the Disabled

In an effort to develop human factors guidelines for designing consumer products for the disabled a series of interviews and surveys were conducted in the homes of noninstitutionalized disabled people. The study covered a variety of disabilities, and where possible, individuals with several different levels of a given disability were included. A detailed set of recommendations of specific controls for use on products to be used by disabled people was found to be impractical because interfaces which are desirable to one disabled person are often a bad choice for another. The greatest problem for most disabled consumers is the variety of controls often found on a product. If one key control is inoperable by a person, the product may be unusable for that person. A preferred method for designing for the disabled is to use less variety in the selection of controls on each product. By reducing the within product variability along certain key design dimensions an individual capable of using some of the controls is more likely to be able to use them all.