A new study has found that children who are born before 39 weeks among others born in the term between 37-41 weeks are more likely to experience symptoms associated with attention-deficit/hyperactivity disorder (ADHD). 

The study, published in the Journal of Pediatrics, is said to be one of only a few to investigate the associations between gestational age at term (37-41 weeks) and a diagnosis or symptoms of ADHD.