A list helps, but why can walking more aisles still raise impulse risk?

Answer: More product cues appear

More product cues appear ✓ — Right: lists help, but walking more aisles increases exposure to products, displays, and reminders. Inman, Winer, and Ferraro found that list use, limiting aisles, and limiting time reduced unplanned purchasing. A separate MSI report makes the exposure link from the other side: shoppers who visit more aisles and peruse more items make more unplanned purchases.

Checkout is the only trap — Checkout candy is a real impulse zone, but it is not the only trap. The in-store decision research focuses on aisles, displays, trip length, and product cues throughout the trip. If impulse buying only happened at the register, limiting aisles and time would not matter so much.

Lists erase store cues — A list narrows the goal, but it does not erase what the store shows you. The whole point of in-store stimuli is that products can remind shoppers of forgotten needs or spark new wants. A list is a filter, not a force field, so exposure still matters.