Research: Purchase Motivation Drives Unplanned Buys More Than Hunger
Breda University of Applied Sciences research challenges the common advice to 'never shop hungry.' The purpose of a shopping trip, rather than hunger levels, is found to be the primary driver of unplanned purchases.

New research from Breda University of Applied Sciences (BUas) suggests that the reason a customer enters a grocery store is a more significant factor in unplanned purchases than physical hunger. While the popular advice is to avoid shopping on an empty stomach, the study indicates that the shopper's intent plays a far greater role in their purchasing behavior.
The research analyzed shopping data from 323 consumers, measuring their reported hunger levels post-shopping. Findings revealed that hunger significantly impacted only snack and candy purchases, increasing the likelihood of an unplanned buy by 9% for every point increase on a hunger scale. However, when considering the entire shopping basket, hunger was not a substantial influence.
Instead, the study identified the purpose for entering the store as the most potent predictive factor. Shoppers who entered the store simply to browse or without a specific shopping list made unplanned purchases 69% of the time. This contrasts sharply with the 24% rate among those who came for routine grocery shopping, representing a nearly nine-fold difference.
Older shoppers also exhibited different purchasing patterns. Those aged 55 and above reported the highest hunger levels but made the fewest unplanned purchases, suggesting that experience and self-control may override physical appetite in influencing buying decisions.
The study, released around World Food Day on October 16, offers a new perspective on food behavior and challenges established beliefs about consumer shopping habits.