Smart Shopping Carts: How Real-Time Feedback Influences Spending

Although interest in smart shopping carts is increasing, both retailers and consumer groups have concerns about how real-time spending feedback will influence shopping behavior. Building on budgeting and spending theories, the authors conduct three lab and grocery store experiments that robustly show that real-time spending feedback has a diverging impact on spending depending on whether a person is budget constrained (“budget” shoppers) or not...