Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
A longitudinal study is a research method in which data is collected from the same group of participants over an extended period of time to examine changes or developments that occur over time.
Related terms
Cross-sectional Study: A research method where data is collected from different groups at one point in time to compare and analyze differences between them.
Cohort Effect: The influence of being born in a particular generation or specific historical context on an individual's development or behavior.