How many shoppers break the “10 items or less” limit in the supermarket?

.

A total of 68 15-min. observations of customers’ behavior at a food supermarket suggests that only about 7% of shoppers observe the item limit of the express lane. The averages tended to be about four pieces.

Source: “Compliance with the item limit of the food supermarket express checkout lane: another look.” from Psychol Rep. 2002 Dec;91(3 Pt 2):1057-8.

This is from Richard Wiseman’s very interesting book Quirkology: How We Discover the Big Truths in Small Things. If you liked Freakonomics, you’ll enjoy it.

Join 25K+ readers. Get a free weekly update via email here.

Digests of posts:

Things you didn’t know about sex

How to quickly and easily improve your life

Things you didn’t know about sports

Things you didn’t know about happiness

Things you didn’t know about lies, liars and detecting lies

Things you didn’t know about negotiation, persuasion and influence

Things you didn’t know about marriage and relationships

Share

Subscribe to the newsletter

Over 500,000 people have subscribed to my newsletter. Join now and get the beginning of my new book free:

I want to subscribe!