noun phrase · academic
longitudinal study
UK/ˌlɒŋɡɪˈtjuːdɪnəl ˈstʌdi/US/ˌlɑːnɡəˈtuːdɪnəl ˈstʌdi/lon·gi·TU·di·nal STU·dy
a study that follows the same people or subjects over a long period to observe changes over time
Examples
“To see how students' attitudes change from age 10 to 18, the team ran a longitudinal study.”
“Longitudinal studies are useful for identifying trends and causal relationships over time.”
“The project required repeated measurements, so they chose a longitudinal study design.”
Band 8 sentence
“A well‑designed longitudinal study can reveal developmental patterns that cross-sectional surveys simply miss.”
Collocations
- longitudinal data
- conduct a longitudinal study
Word family
Common mistakes
long-term study→longitudinal study
longitudinally study→longitudinal study
Say it for a higher band
5long-term study→6follow-up study→7+longitudinal study
Synonyms
follow-up study
Easily confused
follow-up study
“The follow-up study contacted participants one year after the intervention.”
Related words
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In Science & Research
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