“…Previous studies have investigated various aspects of attention in different populations, including children with ADHD, dyslexia, and good and poor reading skills generally (e.g. Brannan and Williams, 1987;Dykman, Ackerman and Oglesby, 1979;Fischer and Weber, 1990;Hallahan, Kauffman and Ball, 1973;Milberg, Whitman and Galpin, 1981;Pearson and Lane, 1990;Pelham, 1979;Schacher, Logan, Wachsmuth and Chajcyzk, 1988;Sykes, Douglas and Morgenstern, 1973;Tarver, Hallahan, Kauffman and Ball, 1976). However, many results have been inconsistent and some experiments have been methodologically flawed.…”