…its bright colors put you in a good mood and inspire you to buy more. Human tendency urges a shopper to first get attracted to a pleasing visual aesthetic and second, invent an internal need to own it. That’s why I recommend that you start shopping in the middle of the store, with its bland boxes and cans. — Phil Lempert, grocery industry expert, and editor of supermarketguru.com

If you used to buy a six-pack of soda and drink six cans a week but now buy a 12-pack because that’s the current standard size, you’re probably going to start drinking 12 cans a week. Be mindful when buying larger sizes to make sure your habits don’t change as a result. — Jeff Weidauer, former supermarket executive and vice president of marketing for Vestcom, a retail services company.

Milk, bread, bananas, and eggs. Ninety-five percent of shoppers have no idea what all the other items cost and don’t know if they’re getting a good deal when they buy them.

When you walk in the door, you smell bread baking or rotisserie chicken roasting in the deli area because we know those smells get your salivary glands working. Consumers tend to stock up on supplies during such hunger pangs. "When you’re salivating, you’re a much less disciplined shopper." — Paco Underhill, consumer expert and author of 'What Women Want: The Science of Female Shopping.'

We doubled their size as a test, and customers bought 19 percent more of groceries than usual as compared to their smaller counterparts. Having the cart filled to the brim does offer a fulfilling shopping experience psychologically. — Martin Lindstrom, marketing consultant and author of 'Brandwashed: Tricks Companies Use to Manipulate Our Minds and Persuade Us to Buy.'