Well, there's only one thing to be done then. I'll be waiting at Caesar's Palace; you bring the experimental funds.

Anyhow, the primary reason I disagree with you is that most people just don't expected to be cheated outright in psychology experiments; again and again it's found that the majority of subjects trust the experimenters.

Take for example the study on guilt where the volunteer signed up more often for a painful experiment if he thought he had broken an expensive machine, when in fact it was rigged to appear to break. You'd find different behavior if most of the subjects were suspicious at the outset.