Writing this book has been a pleasure, but it has also been frustrating. It was a delight to see that the facts of food preferences, eating, and food behavior conform in many ways to the general principles of psychology. Matching these, however, was often like putting together a jigsaw puz- zle-looking at a fact and trying to figure out which psychological theories or principles were relevant. This was made more difficult by conflicting principles in psychology and contradictory findings in psychological as well as food-preference research. The material cited is not meant to be exhaustive....