How Supermarkets Play You for a Sucker

Smart shoppers tend to be aware of the games played at the supermarket -- higher-priced items tend to be stocked at eye level. Necessities are placed at the back of the store, forcing consumers to walk past other sections. "Impulse" items fill the checkout area.

The latest ways that supermarkets try to part customers with their cash is the subject explored in the TV documentary, "Supermarkets Inc.: Inside a $500 Billion Money Machine". The show offers a glimpse of how and why grocery stores do what they do -- and how you can prepare yourself to cope.

The video above is the documentary's interview with Martin Lindstrom, the author of Buyology: Truth and Lies About Why We Buy.