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controlled experiment

American  

noun

  1. an experiment or trial that uses controls, usually separating the subjects into one or more control groups and experimental groups.


Etymology

Origin of controlled experiment

First recorded in 1885–90

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To measure its value, the state ran a controlled experiment and determined whether roads were striped or left unmarked by flipping a coin.

From The Wall Street Journal Jul. 4, 2026

To isolate the issue, Duffy and Li designed a controlled experiment with people ages 45 to 55.

From MarketWatch Apr. 16, 2026

To explore this process, researchers conducted a carefully controlled experiment in healthy volunteers.

From Science Daily Feb. 19, 2026

Note: This was a carefully controlled experiment, run by doctors.

From NewsForKids.net Apr. 30, 2024

It seems like a perfectly controlled experiment in the evolution of human societies.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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