The purpose of this study was to examine whether group-based differences exist in word- and text-level reading in a clinical sample of students with dyslexia, and to shed light on the cognitive processes supporting these essential skills. Second- through seventh-grade students were administered a battery of standardized measures of cognitive…

This study examined the Double-Deficit Hypothesis (DDH) by classifying students with dyslexia into four distinct groups, comparing group differences on text-level reading tasks, and examining group stability across one school year (fall to spring). Elementary students (N = 109) were administered measures of reading fluency, reading comprehension,…

The purpose of this study was to classify Korean readers into subgroups based on their reading achievement and to examine the relationships between these subgroups and a set of cognitive-linguistic variables. The reading achievement and cognitive-linguistic skills of 394 elementary school students were measured and the data were analyzed by…

Research into reading difficulties in Russian has been taking place for about a century, since the 1920s. Early research established a line of studies on reading acquisition difficulties in the context of highly structured practices of teaching reading. These practices were propagated in the mid-late 19th century by Konstantin Ushinskii, who…