“…Traditionally, it has been accepted that children with LD do not achieve commensurate with their age, ability, and educational experience, and these children demonstrate severe discrepancies between achievement and intellectual ability (Siegel, 2003). In the past decade, the focus on a single global measure of intelligence to identify learning disabilities has been criticised, and the importance of using cognitive and neuropsychological tasks to assess deficiencies in specific skills associated with school learning and achievement has been emphasised (Haywood, 2004;Siegel, 1999). Luria's (1969) theory of brain organisation that postulated three basic units of the brain, each with particular functions guiding simple and complex behaviours during learning, has been used as a conceptual foundation for some test batteries (e.g., Kaufman & Kaufman, 2004), and for guidance in evaluation and treatment (e.g., Culbertson & Edmonds, 2004).…”