Of all the definitions of different types of learning disability (LD), dyslexia stands out as a type of LD for which clear criteria for identification have been specified (Lyon, 1995; Lyon, Shaywitz, & Shaywitz, 2003). The International Dyslexia Association (IDA) has taken the lead over the past decade in improving the definition of dyslexia by arguing successfully for anchoring the definition in evidence-based inclusionary characteristics that represent specific criteria for identification, such as a word reading problem. Specifically, dyslexia is more precisely identified and distinguished from other types of LD on the basis of difficulties with accurate and fluent reading of single …