What psychological principle explains why essential grocery items like milk and bread are typically placed at the back of supermarkets?

In the world of retail science, product placement isn't random - it's carefully calculated to maximize sales through psychological triggers. Retailers use scientific principles of visual perception, cognitive processing, and behavioral economics to influence consumer decisions. This poll tests your knowledge of the science behind why products are positioned where they are in stores and how these placements affect purchasing behavior.

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The Gruen Transfer - forcing customers to navigate through the entire store increases exposure to other products and impulse purchases
The Endowment Effect - customers value items more after physically holding them for extended periods while walking
The Zeigarnik Effect - unfinished shopping journeys create cognitive tension that drives completion of intended purchases
The Von Restorff Effect - items encountered last during shopping are remembered better, increasing likelihood of repeat purchases