Research on the evaluation of the level of proficiency in reading using index of ocular movement: developmental change in typically developing children and characteristics in dyslexic children

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The purpose of this research was to explore effective oculomotor indices for the level of proficiency between "letter by letter" and "chunk" reading using an eye tracking system. Using these indices, we performed an objective evaluation to determine differences between typically developing and dyslexic children. We describe three interesting results. First, differences in reading characteristics between typically developing children and healthy adults revealed that effective oculomotor index is the number of gaze points recorded during the reading task. Second, developmental changes in reading characteristics in typically developing children can be measured as a significant reduction in the number of gaze points. Third, the significant delay in reading time in dyslexic children compared to typically developing children is characterized by an increase in the number of gaze points.