From the moment you enter a supermarket, you cross paths with all sorts of promotions and signs that push you to buy a range of products you didn't plan on getting.
These oblivious tricks are easier to spot and to try and ignore if you're paying attention, but according to a consumer psychologist, there are plenty of other subtle ways stores try to get you to spend more.
From the fake scents they pump out in the bakery section to how they arrange items on the shelves.
