observational study
nounUK /ˌɒbzəˈveɪʃənl ˈstʌdi/
US /ˌɑːbzərˈveɪʃənl ˈstʌdi/
A way to learn about something by watching it carefully without changing it.
The scientists did an observational study to see how children play together.
RELATED WORDS
OTHER MEANINGS
2. A research method where researchers watch and record what happens without interfering.
In an observational study, the doctor simply noted how often patients coughed.
3. A scientific investigation based on watching subjects in their normal setting.
The birdwatchers' observational study showed which trees the birds preferred.
4. A study that collects information by observing rather than by asking questions or testing.
Their observational study of traffic patterns helped the city plan safer crossings.