Background: This trial aimed to measure the effects of extrinsic and intrinsic factors on users' comprehension of health information provided in adapted written "easy read" material. Method: Sixty adults with intellectual disabilities undertook The Easy Read Task, randomly allocated with stratification by reading ability to one of four…

The use of readability principles in the ERIC guidelines for abstracting suggests that abstracts should be more readable than source documents. However, information theory suggests that the compression of information would result in less readable abstracts. Abstracts and their source documents were selected randomly from each of four…