To address this issue, research has been focusing on developing automatic methods for readability evaluation, which could account for the specific reading difficulties of various reader populations (Dubay, 2004;Benjamin, 2012), including people with cognitive disabilities (Feng et al., 2010;Yaneva and Evans, 2015).
relying on readability formulae to measure text accessibility is an approach that has many drawbacks (Benjamin, 2012; Dubay, 2004;Siddharthan, 2004), mainly re-lated to the fact that readability formulae only employ surface text features such as word or sentence length.