Point of Purchase displays

Im a student currently doing research on POP displays for class and have kind of hit a wall. Does anyone know a good source for information on how POP’s are displayed/assembled/moved around stores? Im trying to find anecdotal and statistical information on how display location is determined and how anthropometry factors into display decisions. Thanks for any input!

The international trade association for the marketing at retail industry may be a good place to start: http://popai.com/
Otherwise search out promotional display companies, and case studies from display design or shopper marketing firms.