Two great research oriented books on the topic of persuasion and behavior modification are "Influence: The Psychology of Persuasion" and "White Bears and Other Unwanted Thoughts". Highly recommend them for people looking for more than opinions over overviews.

http://www.amazon.com/Influence-Psychology-Persuasion-Busine...

http://www.amazon.com/White-Bears-Other-Unwanted-Thoughts/dp...