IANS New Delhi, May 22 A smaller brain region responsible for control over behaviour, processing of emotion, and communication may explain why about one in two children with Attention Deficit Hyperactivity Disorder (ADHD) is likely to experience depression, anxiety, and explosive outbursts, according to a study on Wednesday. ADHD affects around one in 14 young people under the age of 18 and in around half of these cases it persists into adulthood. Mood disorders such as depression, anxiety disorder, and verbal or physical outbursts due to an inability to regulate their emotions in children with ADHD were previously thought to be a result of problems with cognition and motivation.

But in the study, scientists from Fudan University in Shanghai in China and the University of Cambridge showed that emotional dysregulation occurs independently of these, and is because of a brain region called pars orbitalis. “The pars orbitalis is a well-connected part of the brain, and if it hasn’t developed properly it might make it difficult for individuals to control their emotions and communicate with others appropriately, especially in social situations,” said Barbara Sahakian from the Department of Psychiatry at the University of Cambridge. For the study, published in the journal Nature Mental Health, the team identified 350 individuals with high symptoms of ADHD and found that more than half (51.

4 per cent) had signs of emotion dysregulation and this was independent of cognitive and m.