Hyperlexia & autism are commonly co-occurring, but not mutually inclusive
Hyperlexia is advanced and unexpected reading skills and abilities in children way beyond their chronological age.
Hyperlexia is most common in, but not exclusive to, Autistic children.
Approximately 84% of hyperlexic kids are also autistic.
A child can be one and not the other, however; approximately 9–14% of autistic children are hyperlexic.
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Ostrolenk, A., d’Arc, B. F., Jelenic, P., Samson, F., Mottron, L. (2017). Hyperlexia: Systematic review, neurocognitive modelling, and outcome.
Neuroscience & Biobehavioral Reviews, 79, 134–149. https://doi.org/10.1016/j.neubiorev.2017.04.029
Wei, X., Christiano, E. R., Yu, J. W., Wagner, M., & Spiker, D. (2015). Reading and math achievement profiles and longitudinal growth trajectories of children with an autism spectrum disorder. Autism, 19(2), 200–210. https://doi.org/10.1177/1362361313516549