In retail store design, what is the widely-used strategy known as the 'Gruen Transfer' named after architect Victor Gruen?

Retail store designs aren't random - they're carefully engineered to influence shopping behavior and maximize sales. From the placement of essential items to the width of aisles and even the music playing overhead, every element serves a strategic purpose. This trivia question explores one of retail's most effective layout strategies that has been scientifically proven to impact consumer spending habits.

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The psychological moment when consumers transition from purposeful shopping to impulse buying due to disorientation caused by the store layout
Placing high-margin products at eye level while positioning lower-margin necessities on bottom shelves
The practice of positioning essential items at opposite ends of the store to maximize customer exposure to other products
Using narrower aisles in high-profit sections to slow down customer movement and increase product examination time