Why Are Control Groups Included in Experiments

question 195

Multiple Choice

Why are control groups included in experiments?

• A) to determine whether two variables are related
• B) to ascertain cause-and-effect relationships
• C) to ensure that participant characteristics are essentially the same in each group
• D) to ensure that the results may be generalized to the population

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Definitions:

Placebo Control Group

A group in experimental research that receives a sham or inert treatment, used to compare against the real treatment's effects.

Active Component

The element in a system or product that is responsible for its primary function or effect.

Diet Supplement

Products intended to add nutritional value to the diet, often containing vitamins, minerals, herbs, or other substances.

Statistically Significant

A term used to indicate that the result of a study is unlikely to have occurred by chance alone, according to a pre-determined threshold probability.