Will offering people the option of a salad or vegetables reduce French fry consumption? It's likely that it may have a small impact. In part, the power of suggestion is pretty powerful.
In a nutshell, this experiment was all about location, location, location. Would these "subjects" eat more M&M's based entirely on where the M&M's were located in the chateau?
As I wandered around a bookstore waiting for a flight to Paris for work, I couldn't believe my good fortune in discovering the biography of Julia Child entitled, Dearie, by Bob Spitz.