Unwanted thoughts are easier to control when rested.

KARACHI -- A study finds sleep deprivation makes unwelcome thoughts occur more frequently and makes them harder to manage. It's not uncommon for unwelcome thoughts to cross a person's mind now and again. According to psychologist Marcus Harrington of the Department of Psychology at the University of York in the United Kingdom, 'For most people, thought intrusions pass quickly, but for those [who are experiencing] psychiatric conditions, such as post-traumatic stress disorder (PTSD), they can be

repetitive, uncontrollable, and distressing.' Harrington is the lead author of a new study investigating the effect of sleep deprivation on unwanted thoughts. The study finds that...