People with disabilities make all kinds of purchases most workers never need. They might have to buy a wheelchair, build an access ramp, or take cabs because they can’t drive. People with hearing, vision or speech disabilities use electronic or computerized assistive devices and software. Some need home health aides, and many spend more on medical care. To fully understand their specific needs, researchers at Stony Brook University and RAND developed a detailed survey of nearly 2,000 people with disabilities, using input from experts with disabilities themselves or experience in the field. The authors conducted an analysis of the survey data on people who are receiving benefits from Social Security’s disability program or its companion program, Supplemental Security Income. Their survey reveals…