How Can Variance Be Reduced in a Between-Subjects Design

question 3

Multiple Choice

How can variance be reduced in a between-subjects design?

• A) Limit the number of participants in each group.
• B) Use a factorial design adding a participant variable (such as age) as a second factor.
• C) Reduce the number of treatments.
• D) Reduce the strength of the treatment.

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Definitions:

Ethical Concerns

Issues or situations that require a consideration of what is right and wrong in terms of conduct or morality.

American Psychological Association

A leading scientific and professional organization representing psychology in the United States, dedicated to advancing the creation, communication, and application of psychological knowledge to benefit society.

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The act of misleading or falsely persuading others, often involving concealing the truth or providing incorrect information.

Random Assignment

A method used in experiments where participants are allocated to different groups in a way that every participant has an equal chance of being assigned to any group, ensuring variation across them.