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The use of a control group is called experimental design.   What is the global term for...

The use of a control group is called experimental design.  

What is the global term for conducting research without a control group?

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Answer #1

all experiments have an experimental group, not all experiments require a control group. Controls are extremely useful where the experimental conditions are complex and difficult to isolate. Experiments that use control groups are called control experiment.

If you want to test whether duration of light exposure affects fish reproduction, the control group would be exposed to a "normal" number of hours of light, while the duration would change for the experimental group.

Scientific control group.

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