I thought Spiegel's idea was quite an old one?
Hypnotic Induction Profile
The Hypnotic Induction Profile (HIP)[2] or the eye roll test, first proposed by Herb Spiegel, is a simple test to loosely determine if a person is susceptible to hypnosis. A person is asked to roll his or her eyes upward. The degree to which the iris and cornea are seen is measured. The less of this part of the eye observed, the more hypnotically susceptible a person is. Research has shown that the scale does not carry as strong a relationship with other hypnotic scales as originally thought, with correlations ranging from 0.1 to 0.15 (Orne et al. 1979).
http://en.wikipedia.org/wiki/Hypnotic_s ... on_Profile
Anthony Jacquin wrote:http://www.time.com/time/magazine/article/0,9171,945855,00.html