After Reading the Paragraph Below, Answer the Questions That Follow

question 21

Multiple Choice

After reading the paragraph below, answer the questions that follow.
Researchers set up a study to determine whether large doses of a nutritional supplement would shorten the length of time it takes to recover from a cold. Three thousand volunteers were split into two groups. For two weeks, members of group A took 3,000 mg of the supplement daily. Group B received 3,000 mg of a placebo. At the end of the two-week period, the researchers inserted live cold viruses directly into the noses of all the volunteers. The volunteers in both group A and group B continued to take their daily pills. All the volunteers got colds, and there was no significant difference in the length of time the colds lasted.
-To have confidence that the results of the experiment were valid, you'd also want to know

• A)whether any volunteers had colds at the start of the experiment.
• B)whether the volunteers exercised daily.
• C)whether the volunteers all worked for the same company.
• D)what the volunteers ate during the experiment.

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Definitions:

Dependency

A state of relying on or needing something or someone for support, sustenance, or survival.

Emotional Self-regulation

The process by which an individual controls and manages their emotional responses to stimuli or situations.

Reverse Psychology

A technique involving the assertion of a belief or behavior that is opposite to the one desired, with the expectation that this approach will encourage the subject to do what actually is desired.

Behavioral Self-examination

The process of reflecting on one's actions and behaviors with the aim of understanding and improving oneself.