Telling a photographer before a shoot that the subject is a millionaire or a recovering alcoholic is not placing a preconceived idea in their minds?
Quote from the introductory blurb for the video. "This is an experiment about expectations. Six photographers are given an assignment to shoot photos of one man. Each photographer is told a different story about the man: he's a millionaire, a lifesaver, an ex-con, a fisherman, a psychic, a recovering alcoholic. As you might expect, the photos taken by the different photographers of the same person are pretty different."
The six photographers were surprised when they saw all their portraits together and wondered that it was the same man.