A new survey shows that only 10% of parents think their teenager has used alcohol in the last year, whereas 52% of teenagers report actually drinking. The survey suggests parents have "blinders on" and are more likely to accuse other parents' children of misbehavior than their own. A new poll from the University of Michigan found that parents still look at their children with blinders on, accusing other children while not believing their own children have used alcohol or drugs.