What is a Longitudinal Study?

Learn about Longitudinal Studies, a research method that collects data from the same contributors over multiple occasions within a defined period.

This article applies to: ut logo tiny.pngUserTesting 

 

On this page:


 

Overview of Longitudinal Studies

  • Longitudinal studies, often called "diary studies," involve collecting data from the same participants multiple times over a specified period.
  • These studies provide valuable insights into how participants interact with their environment, products, services, or brands in their daily lives over time.
  • Typically, the duration of such studies ranges from one to two weeks.

 

 

Diary Study Sandwich Method

  • Researchers structure longitudinal studies using the "Diary Study Sandwich Method," which includes multiple research touchpoints:
  • Initial Interview: Understand participants and their needs related to the study topic.
  • Remote Unmoderated Touchpoints: Collect in-context behavior through mobile or desktop devices across 3–4 sessions. For example:
    • Documenting the planning process for purchasing kitchen items.
    • Recording the in-store shopping experience.
    • Describing how purchased items are organized in the kitchen.
  • Final Interview: Review all touchpoints and delve deeper into topics of interest identified during the study.

 

 

Applications of Longitudinal Studies

  • Longitudinal studies are beneficial for:
    • Exploring user experiences with existing products before developing new ones.
    • Understanding how new products are utilized over time in real-world settings.
    • Gaining insights into participants' behaviors and interactions in their everyday environments.

 

Related content

information icon.png

knowledge icon.png

Want to learn more? Check out these Knowledge Base articles... 

Interested in growing your skills? Check out our University courses...

video icon 2.png

team icon.png

Need hands-on training?

Can't find your answer?

Was this article helpful?