Marketing tricks in supermarkets

Shoppers buy 40% of the items in their carts from shelves that were within 12 inches of eye level.
...beware of 'bumpouts' - displays and shelves that jut out...
Shoppers who proceeded round the store clockwise spent $2 less than shoppers who went the usual counterclockwise.
Consumer Reports May '12 p. 20
-Tom.