Rapid automised naming of letters performance

Rapid automised naming (RAN) of letters asks people to name printed letters as quickly as possible. It is widely used in reading research as a predictor of fluency.

GWAS work has identified variants linked to RAN tasks, with overlap with reading and processing-speed traits.

This result reflects research-level variation in reading-related cognition and is not a reading test.

Education, practice, attention, sleep, and overall cognitive health strongly shape actual RAN performance.

0 SNPs

1 Study

Jun 02, 2026

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Scientific Evidence

The following peer-reviewed scientific studies support the genetic associations analyzed in this report.

Genome-wide association scan identifies new variants associated with a cognitive predictor of dyslexia

Evidence

02/11/2019

Transl Psychiatry

Authors: Gialluisi A, Andlauer TFM, Mirza-Schreiber N, Moll K, Becker J, Hoffmann P, Ludwig KU, Czamara D, St Pourcain B, Brandler W, Honbolygó F, Tóth D, Csépe V, Huguet G, Morris AP, Hulslander J, Willcutt EG, DeFries JC, Olson RK, Smith SD, Pennington BF, Vaessen A, Maurer U, Lyytinen H, Peyrard-Janvid M, Leppänen PHT, Brandeis D, Bonte M, Stein JF, Talcott JB, Fauchereau F, Wilcke A, Francks C, Bourgeron T, Monaco AP, Ramus F, Landerl K, Kere J, Scerri TS, Paracchini S, Fisher SE, Schumacher J, Nöthen MM, Müller-Myhsok B, Schulte-Körne G

2,563 individuals (european ancestry)

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This report is intended for educational and informational purposes only. It is not intended to provide medical advice or be used solely by the customer in the diagnosis, cure, mitigation, treatment, or prevention of any disease or health condition. If you have serious medical conditions, including but not limited to weight-related issues, diabetes, or heart disease, you should not make changes to your diet or exercise routine without consulting your healthcare provider. Under no circumstances should you modify your medication or medical care without professional medical guidance.

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