Okay, for the uninformed, making prejudiced statements based on jealousy:
As a teacher of 17 years, with experience of supporting disabled students, and current assessor for DSA, I've seen a number of students requiring support. Many students have difficulties which would disadvantage them in the standard examination situation where the time constraint means the are not on a 'level playing field' with others in the same situation.
Simple example: A dyslexic student who has difficulties with automaticity of reading text would take longer to read and understand the question. This would have been identified in their diagnostic assessment with an educational psychologist. The same person would take a lot longer to structure and compose their responses and check them over. Again, difficulties are identified using accepted tests and conducted by an educational psychologist. Providing that person with the use of laptop computer in an examination would allow them to read on-screen fonts with different coloured backgrounds/contrast to assist their reading accuracy. It would allow them to structure, edit and compose work using the word processing features. They would not have access to spell check or thesaurus features or internet access as this would put them at an advantage. In this situation the laptop is being provided as a strategy to accommodate the deficits in processing they experience. Throw in difficulties linked to handwriting speed as a result of these deficits in processing, and a dyslexic student would only get through a small proportion of the work within the time frame.
And yes, studies have been done to support these 'reasonable adjustments' in higher education. Look at:
The Experience of Higher Education from the Perspective of Disabled Students, Sarah Holloway, Disability & Society,
Vol. 16, Iss. 4, 2001