Unplanned purchases: Why does that Snickers bar looks better the longer you shop?

(American Marketing Association) You go to the grocery store to buy a pound of ground beef and a can of tomato sauce. You walk out with the ground beef, the sauce, and a bag of chocolate-covered almonds, a silicon spatula, and the latest celebrity magazine. What happened? According to a new study in the Journal of Marketing, what and when you purchased determined the array of items you eventually bought.
Source: EurekAlert! - Social and Behavioral Science - Category: Global & Universal Source Type: news