About 25–40% of patients with ADHD have major reading and writing difficulties, many show co-existing language disorders, and there is considerable overlap with arithmetical skills disorders¶

Claim · All claims
Evidence · 1 study (2 entries) · review r2 · q2
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2023: baselines and conditions change

Subclaims¶

q2 i? About 25–40% of all patients with ADHD have major reading and writing difficulties, and many show co-existing language disorders. → Franke 2018 q2 i? There is a considerable overlap between ADHD and disorders of arithmetical skills. → Franke 2018 (2)

Evidence¶

Franke 2018¶

Franke, B.; Michelini, G.; Asherson, P.; Banaschewski, T.; Bilbow, A.; Buitelaar, J.K.; Cormand, B.; Faraone, S.V; Ginsberg, Y.; Haavik, J.; Kuntsi, J.; Larsson, H.; Lesch, K.P.; Ramos-Quiroga, J.A.; Réthelyi, J.M.; Ribases, M.; Reif, A. (2018). Live fast, die young? A review on the developmental trajectories of ADHD across the lifespan. European Neuropsychopharmacology. https://doi.org/10.1016/j.euroneuro.2018.08.001

q2 · i? · review · r2

Narrative review of ADHD comorbidity with learning disorders, citing Sciberras et al. (2014) and Willcutt et al. (2012). The review reports that "About 25– 40% of all patients with ADHD have major reading and writ- ing difficulties". Percentages only; no effect size printed.

"About 25– 40% of all patients with ADHD have major reading and writ- ing difficulties, and many show co-existing language disor- ders ( Sciberras et al., 2014; Willcutt et al., 2012 )."

Franke 2018 (2)¶

Franke, B.; Michelini, G.; Asherson, P.; Banaschewski, T.; Bilbow, A.; Buitelaar, J.K.; Cormand, B.; Faraone, S.V; Ginsberg, Y.; Haavik, J.; Kuntsi, J.; Larsson, H.; Lesch, K.P.; Ramos-Quiroga, J.A.; Réthelyi, J.M.; Ribases, M.; Reif, A. (2018). Live fast, die young? A review on the developmental trajectories of ADHD across the lifespan. European Neuropsychopharmacology. https://doi.org/10.1016/j.euroneuro.2018.08.001

q2 · i? · review · r2

The review reports, citing Hart et al. (2010) and Rapport et al. (1999), "a considerable overlap between ADHD and disor- ders of arithmetical skills". No prevalence figures or effect sizes are printed for this overlap.

"Similarly, there is a considerable overlap between ADHD and disor- ders of arithmetical skills ( Hart et al., 2010; Rapport et al., 1999 )."

Discussion¶

Related Claims¶

• ADHD is associated with poor academic outcomes, including lower grade point average, increased grade retention, and lower rates of high-school graduation and post-secondary education
• Reading and writing abilities share substantial overlap, supporting teaching writing based on reading