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Dyslexia involves visual problems with letter orientation.

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CONTESTED PARTIAL
Recorded sources
2 sources for · 6 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that dyslexia involves visual problems with letter orientation?

Partly. One reference work reports that children with reading disabilities confused stimulus orientation more often than average readers, while noting this is not the sole problem or determinant of dyslexia; another source lists letter-orientation problems as one possible subtype. Other sources describe dyslexia as separate from vision problems or attribute letter-string difficulties to phonological or attentional mechanisms rather than visual orientation.

Verdict: CONTESTED PARTIAL · 2 sources for, 6 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 2
Emerging technologies and neuroscience-based approaches in dyslexia: a narrative review toward integrative and personalized solutions.
2025
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R, N., L, N., & F, Z. (2025). Emerging technologies and neuroscience-based approaches in dyslexia: a narrative review toward integrative and personalized solutions.. doi.org. https://doi.org/10.3389/fnhum.2025.1683924

Evidence against · 6
Dyslexia
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Dyslexia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Dyslexia

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More for · 1
Handbook of Neuropsychology
1988
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Boller, F. (1988). Handbook of Neuropsychology. books.google.com. http://books.google.com/books?id=O0woAQAAIAAJ&dq=Dyslexia+involves+visual+problems+with+letter+orientation.&hl=&as_pt=BOOKS&source=gbs_api

More against · 5
Rapid Processing of Letters, Digits and Symbols: What Purely Visual-Attentional Deficit in Developmental Dyslexia?
2010
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C., Z. J., Catherine, P., Stephane, D., & Jonathan, G. (2010). Rapid Processing of Letters, Digits and Symbols: What Purely Visual-Attentional Deficit in Developmental Dyslexia?. eric.ed.gov. https://doi.org/10.1111/j.1467-7687.2010.00983.x

Impaired Letter-String Processing in Developmental Dyslexia: What Visual-to-Phonology Code Mapping Disorder?
2012
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Sylviane, V., Delphine, L., & Muriel, L. (2012). Impaired Letter-String Processing in Developmental Dyslexia: What Visual-to-Phonology Code Mapping Disorder?. eric.ed.gov. https://doi.org/10.1002/dys.1437

Neglect dyslexia: a review of the neuropsychological literature.
2010
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Vallar, G., Burani, C., & Arduino, L. S. (2010). Neglect dyslexia: a review of the neuropsychological literature.. doi.org. https://doi.org/10.1007/s00221-010-2386-0

Encyclopedia of Perception Volume 1 and 2
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Encyclopedia of Perception Volume 1 and 2. (n.d.). archive.org. https://archive.org/details/Encyclopedia_of_Perception_Volume_1_and_2

The Effects of Letter Spacing and Coloured Overlays on Reading Speed and Accuracy in Adult Dyslexia
2016
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M., S. A., Elizabeth, E., & D., S. S. (2016). The Effects of Letter Spacing and Coloured Overlays on Reading Speed and Accuracy in Adult Dyslexia. eric.ed.gov. https://doi.org/10.1111/bjep.12127

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held for human review16 Oct 2026
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