Secret persuasion mind trick by In59seconds:
Buy the book (UK): http://goo.gl/9JaJx3
Buy the book (USA): http://goo.gl/0lGtDR
Animations by Cognitive http://www.wearecognitive.com
Richard Wiseman is based at the University of Hertfordshire http://www.herts.ac.uk
The research described in the video is here:
Freedman, J., & Fraser, S. (1966). Compliance without pressure: The foot-in-the-door technique. Journal of Personality and Social Psychology, 4, 195-202