This article gives much more info on this topic. " Inverse Power of praise" http://nymag.com/print/?/news/features/27840/ http://nymag.com/print/?/news/features

This article gives much more info on this topic. " Inverse Power of praise" http://nymag.com/print/?/news/features/27840/ http://nymag.com/print/?/news/features/27840/