Correction: ADHD story

Correction: ADHD story

LONDON — In a Sept. 30 story about attention deficit hyperactivity disorder, The Associated Press erroneously reported that research linked missing chromosomes to the incidence of ADHD in children. The genetic material was extra or missing chunks of DNA, not chromosomes.

Study: Kids with ADHD more likely to have missing or extra DNA in their brains

Kids with ADHD more likely to have missing DNA

Report: Scientists find evidence connecting head injuries in athletes to Lou Gehrig’s Disease

Report: Scientists link ALS, athlete head injuries

Report: Scientists find evidence connecting head injuries in athletes to Lou Gehrig’s Disease

Report: Scientists link ALS, athlete head injuries