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Browsing the Aisles or Browsing the App? How Online Grocery Shopping is Changing What We Buy

Author

Listed:
  • Sai Chand Chintala

    (SC Johnson College of Business, Cornell University, Ithaca, New York 14853)

  • Jūra Liaukonytė

    (SC Johnson College of Business, Cornell University, Ithaca, New York 14853)

  • Nathan Yang

    (SC Johnson College of Business, Cornell University, Ithaca, New York 14853)

Abstract
This paper investigates the systematic differences between online and offline grocery shopping baskets using data from approximately two million brick-and-mortar and Instacart trips. We apply unsupervised machine learning algorithms agnostic to the shopping channel to identify what constitutes a typical food shopping trip for each household. We find that food shopping basket variety is significantly lower for online shopping trips as measured by the number of unique food categories and items purchased. Within a given household, the Instacart baskets are more similar to each other as compared with offline baskets with twice as many overlapping items between successive trips to the same retailer. These results suggest a potential link between online grocery shopping environments and heightened consumer inertia, which may lead to stronger brand loyalty and pose challenges for new entrants in establishing a customer base. Furthermore, Instacart baskets have 13% fewer fresh vegetables and 5%–7% fewer impulse purchases, such as candy, bakery desserts, and savory snacks, which are not compensated for by alternative or additional shopping trips. We discuss the implications of these systematic shopping basket differences for competition, product management, retailers, consumers, and online platforms.

Suggested Citation

  • Sai Chand Chintala & Jūra Liaukonytė & Nathan Yang, 2024. "Browsing the Aisles or Browsing the App? How Online Grocery Shopping is Changing What We Buy," Marketing Science, INFORMS, vol. 43(3), pages 506-522, May.
    • Handle: RePEc:inm:ormksc:v:43:y:2024:i:3:p:506-522
    DOI: 10.1287/mksc.2022.0292
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