So says today's trivia calendar entry and I've thought all day long about the stores I frequent. Both grocery stores I patronize funnel customers to the left. The United store practically forces you to go to the left, otherwise you'll have to run the gauntlet of check out stands to get to a point where you can enter the aisles. Going left has you pass by the deli, where the delicious smells of fried chicken and food being cooked stimulates your appetite, therefore making you purchase more groceries. It's nearly the same way at the other, smaller store I sometimes shop at, but there's no deli.
I also turn to the left when I go into the Dollar General store; there's a clear lane to the right, but the items I most frequently buy are to the left. I DO go to the right when I go into the Family Dollar store, but the purpose is much the same as with the Dollar General.
Walmart has several entrances, so I don't know that this "fact" would hold true, but when I enter via the middle entry, I turn to the left to start my shopping.
So, this percentage is skewed by how the store is laid out, plus I must be one of the 15%!