[British researchers have found that people lose the ability to detect expressions of anger and sadness around the time of puberty, reports The Daily Telegraph. The discovery, which surprised scientists conducting a pioneering study of the ability to read expressions, could reveal why 13- and 14-year-olds suffer the exasperating inability to understand their parents.] Teenagers really do get 'dumber' in their social intelligence around the time of puberty, ... One wonders sometimes if they understand anything you are saying. It would appear that this is a function of their brain at that time. David Skuse