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.

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Etymology

Origin of controlled experiment

First recorded in 1885–90

Example Sentences

Sahab's team applied a randomized controlled experiment to determine the causal effects of conversational AI facilitation in online discussions in reducing prejudice and anxiety.

From Science Daily • May 10, 2024

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

From NewsForKids.net • Apr. 30, 2024

In a field perpetually seeking to tease out the effects of genetics, environment and life experience, they provide a natural controlled experiment as their paths diverge, subtly or dramatically, through adulthood.

From New York Times • Mar. 6, 2024

This is a precisely controlled experiment so I cannot just hop in.

From BBC • Mar. 3, 2023

In a perfect world, an economist could run a controlled experiment just as a physicist or a biologist does: setting up two samples, randomly manipulating one of them, and measuring the effect.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt