Science Extra: Aspects of psychology: ADHD diagnosis explosion—and singing to babies

Aspects of mental health and psychology. Diagnoses of Attention Deficit Hyperactivity Disorder (ADHD) doubled over the past year, and the cost of doing that increased substantially too. And why do parents take so readily to singing to their babies—especially when it's time to change the nappy? With Presenter of All in the Mind Sana Qadar and Investigative Journalist Ange Lavoipierre Hosted by Science Editor Jonathan Webb