Don't believe the title, the article doesn't give the answer...
http://www.iflscience.com/editors-blog/people-corrupt-countries-may-be-less-honest-study-suggests
Wang Pi's Commentary, Tao Te Ching 65: '
If one uses knowledge and craft to stir up the people and arouse their wicked hearts, he will again use cunning and craft to check their deception'
