Why Do We Fall for Sales?
“-70%”, “only 2 hours left”, “last size available”, “add to cart and get a bonus” — these phrases activate the same reward system in the brain as likes, notifications, and game wins. We are not buying an item — we are buying the feeling of advantage, urgency, and victory over the system.
Research in price perception psychology (Kahneman & Tversky, prospect theory), studies on compulsive purchasing (Journal of Consumer Research, 2020–2025), neuromarketing experiments using fMRI, and behavioral economics all show that the brain perceives a discount not as a reduced price but as an instant “gain” and avoidance of loss.
This creates a dopamine surge, reduces activity in the prefrontal cortex (responsible for rational decisions), and turns impulse purchases into almost automatic actions — even when the item is unnecessary or exceeds the budget.
