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Internal Validity Is Threatened When Subjects in the Control Group

question 27

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Internal validity is threatened when subjects in the control group modify their behavior to compensate for not receiving the experimental treatment. What is this called?


Definitions:

Increasing Acidity

Refers to a trend where acidity increases, typically as a result of changes in structure, electronegativity, or the atom's environment in a molecule.

Acetone

A volatile, colorless liquid used as a solvent and an antiseptic; it is the simplest and smallest ketone.

Ethyl Acetoacetate

An organic compound used as a reagent in the synthesis of various compounds, characterized by the presence of both ester and keto functional groups.

Sodium Ethoxide

A strongly basic compound formed from the reaction of ethanol and sodium, used as a nucleophile in organic synthesis.

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