He produced the critically acclaimed four volume set The Psychology of Terrorism and more recently, the highly praised The New Humanitarians, and is an Amazon.com Best Selling Author. Additionally, he has published or presented over 300 papers and 30 books/manuals on various topics in psychology, including the popular Evidence-Based Practice (Wiley & Sons, 2005, with R. Hayes). His works have been translated into 8 languages. He was noted as being "one of the most frequently cited psychologists in the scientific literature." He is the winner of the APA's International Humanitarian Award, recip...