Is excessive visual crowding causally linked to developmental dyslexia?
نویسندگان
چکیده
منابع مشابه
Crowding, reading, and developmental dyslexia.
We tested the hypothesis that crowding effects are responsible for the reading slowness characteristic of developmental dyslexia. A total of twenty-nine Italian dyslexics and thirty-three age-matched controls participated in various parts of the study. In Experiment 1, we measured contrast thresholds for identifying letters and words as a function of stimulus duration. Thresholds were higher in...
متن کاملWhat is Developmental Dyslexia?
Until the 1950s, developmental dyslexia was defined as a hereditary visual disability, selectively affecting reading without compromising oral or non-verbal reasoning skills. This changed radically after the development of the phonological theory of dyslexia; this not only ruled out any role for visual processing in its aetiology, but it also cast doubt on the use of discrepancy between reading...
متن کاملVisual control in children with developmental dyslexia.
PURPOSE To assess binocular control in children with dyslexia. METHODS Cross-sectional study with 26 children who were submitted to a set of ophthalmologic and visual tests. RESULTS In the dyslexic children less eye movement control in voluntary convergence and unstable binocular fixation was observed. CONCLUSION The results support the hypothesis that developmental dyslexia might present...
متن کاملVisual-spatial attention in developmental dyslexia.
Orienting and focusing of visual attention are two processes strictly involved in reading. They were studied in a group of dyslexic children and normal readers. Shifting of attention by both peripheral and central visual cues was studied by means of the covert orienting paradigm. Focusing, consisting in the ability to control the size of the attentional focus, was investigated using simple reac...
متن کاملHow the visual aspects can be crucial in reading acquisition? The intriguing case of crowding and developmental dyslexia.
Developmental dyslexia (DD) is the most common neurodevelopmental disorder (about 10% of children across cultures) characterized by severe difficulties in learning to read. According to the dominant view, DD is considered a phonological processing impairment that might be linked to a cross-modal, letter-to-speech sound integration deficit. However, new theories-supported by consistent data-sugg...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Neuropsychologia
سال: 2019
ISSN: 0028-3932
DOI: 10.1016/j.neuropsychologia.2019.04.018