Using a website search tool is difficult for people with cognitive disabilities. Finding a relevant result is often thwarted by spelling errors they make, their inability to detect them, or a lack of understanding about how to correct them. Determining which search results are best can be equally difficult.
This post is a synopsis of an approach to circumventing such problems. An example has been implemented on a web site of the German Institute for Human Rights, which is an easy-to-read version of a United Nations convention on the rights of people with disabilities. A typically-appearing site search incorporates novel spelling-correction features and a simplified presentation of search results.
The site search suggests spelling alternatives only for words that actually appear within the content of the website. Searches for correctly-spelled words that produce no search results would be very frustrating for anyone.
To enable spelling suggestions, a manually-edited index of syntactically-similar words was created. Point values were assigned for similarities in the number of the same letters and the word length. A higher value was given to alternative words with the same first letter, but that was not essential.
To enable search-word spelling correction within the fewest steps possible, the most-similar alternatives are displayed in a word cloud. Of those, typically three, the one with the highest probability of matching the intended search word is presented in a larger text size.
Example Spelling Correction
The German word for “contact” is “kontakt”. Initiating a search with the misspelled word “kontat” produces a word cloud as shown in the following image.
The developers believe the word cloud makes it very easy to recognize the correctly-spelled word, and to select a search word. I don’t know why the first letters are capitalized.
Simplified Search Results
Search results are presented in plain language. Each has a bulleted, succinct summary of information on the linked page; and a contextually-relevant image to aid comprehension.
Example Search Result
The following image shows a single search result translated from German to English using Google Translate.
One aspect of the search results I do not favor is that links to the search-result pages are not underlined. It is only when the cursor is hovered over a link, such as “Contact” in the example search result, that an underline appears.
I am impressed with this approach. This is the first time I have seen search results presented so simply, and with accompanying relevant imagery. I think the spelling-correction features are also worthwhile. In a pilot study of them, 9 of 34 people with learning disabilities could use the search site independently. I expect the developers will continue user testing. With funding and time, I would like to develop a site search using similar techniques.
- Reference for all information about spelling-correction:
- This blog post is related to a previous post:
- No endorsement of the German Institute of Human Rights, nor the developers of the “Easy-to-Web Search”, is intended or implied.