Research in Pediatrics journal says 8 % of third - graders have purposefully injured themselves . Children are subject to the same powerful emotions as adults , mental healthy ##ness says . Despite being painful , self - injurious behavior can be highly addictive .
Study in Pediatrics journal says 8 % of third-graders have purposefully injured themselves . Children are subject to the same powerful emotions as adults , mental healthy expert says . Despite being painful , self-injurious behavior can become highly addictive .