Definition

1. Noun:
   • A scientific experiment designed to isolate and measure the effect of a single variable by comparing results with a parallel experiment where that variable is absent or held constant. This is a fundamental method in research to ensure that observed outcomes are truly caused by the variable being tested and not by other factors.

Usage

• The primary function of a control experiment is to serve as a baseline or standard for comparison in scientific testing.
• It is a core component of the scientific method, used to validate the results of the primary experiment.
• It is typically used in contexts involving laboratory research, clinical trials, and any empirical study aiming to establish causality.

Examples

• Noun:
  • In their study on plant growth, the scientists used a control experiment with plants given no fertilizer to compare against the test group.
  • To confirm the drug's efficacy, the clinical trial included a control experiment where patients received a placebo.
  • A proper control experiment is essential to rule out the possibility that the results were due to chance.

Advanced Usage

• "to run/include a control experiment": to conduct or have as part of a study.
  • The protocol required them to run a control experiment simultaneously.
• "to serve as a control experiment": to function as the comparative baseline.
  • The group receiving standard treatment served as the control experiment for the new therapy.

Variants and Related Words

• Control group (n): The set of subjects or items in an experiment that does not receive the experimental treatment and is used as a benchmark. (While closely related, a "control group" is a part of a "control experiment".)
• Controlled variable (n): A factor that is kept constant or monitored in both the control and experimental setups.

Synonyms

• Baseline experiment: An experiment that establishes a starting point for comparison.
• Comparison experiment: An experiment set up specifically for comparative analysis.

Related Phrases

• Experimental control (n): The broader techniques and methods, including the use of a control experiment, to minimize the effects of variables other than the independent variable.

Noun

1. an experiment designed to control for variables affecting the results of another experiment