Gasmel, I'm not sure if this is the original author on the topic, but there is a book titled Influence that discusses Reciprocity and five other principles of influence. The author to that book is Robert Cialdini, a Professor of Psychology at Arizona State University. Hope this helps, Gary
Submitted by gas mel on Monday May 9th, 2011 9:18 pm
Reciprocity
Gasmel, I'm not sure if this is the original author on the topic, but there is a book titled Influence that discusses Reciprocity and five other principles of influence. The author to that book is Robert Cialdini, a Professor of Psychology at Arizona State University. Hope this helps, Gary
Book title
Thanks Gary.
gas