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

“I’m not kidding. Two crystals in your measuring spoon. Not three. Not four. I know that seems like nothing, but trust me, I’ll know if you do more. This is a controlled experiment, okay? So get two crystals in your spoon now.”

From Literature

Led by Professor Jonathan Johnston at the University of Surrey and Professor Alexandra Johnstone at the University of Aberdeen, the research involved a controlled experiment where participants experienced a 5-hour delay in their bedtime and mealtimes.

From Science Daily

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

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

From NewsForKids.net

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