The ADHD deficit in school performance across sex and parental education: A prospective sibling-comparison register study of 344,152 Norwegian adolescents.
Hans Fredrik SundeThomas Haarklau KleppestoKristin GustavsonMagnus NordmoBjørn-Atle RemeFartein Ask TorvikPublished in: JCPP advances (2022)
The ADHD deficit in school performance was large and not easily attributable to other factors. Because the ADHD deficit was large in all school subjects, interventions should ideally address factors that affect school performance broadly, although targeting theoretical subjects specifically may be most effective given limited resources.