How Would an Investigator Ensure That a Sample Is Homogeneous

question 19

Multiple Choice

How would an investigator ensure that a sample is homogeneous?

• A) By restricting eligibility criteria to control for extraneous variables relevant to the study.
• B) By randomly assigning subjects to either the experimental group or the control group.
• C) By assigning one research assistant to collect all data.
• D) By collecting all the data at the same time of day.

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Definitions:

High Levels

A term indicating that the quantity, degree, or rate of something is above normal or average.

Compulsion

A psychological condition characterized by the irresistible urge to perform certain actions repeatedly, often associated with obsessive-compulsive disorder.

Unwished-for Images

Intrusive and unwanted visual thoughts or memories that can cause distress, often associated with conditions like PTSD or OCD.

Anxiety

A feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome.