What Action Would Be the Best Control for a Mediating

question 33

Multiple Choice

What action would be the best control for a mediating variable when designing a study to determine whether a videotape format or a pamphlet is more effective in teaching young women how to perform breast self-examination (BSE) ?

• A) Randomly assign subjects to the two groups.
• B) Exclude subjects who already perform BSE on a regular basis.
• C) Limit the study subjects to women who are heterosexual.
• D) Determine what breast cancer means to the individual participants.

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Definitions:

Protein Capsid

The protein shell of a virus, which encloses its genetic material.

Viral Genome

The complete genetic material of a virus, which can be composed of either DNA or RNA, and determines the structure and function of the virus.

Host Chromosomes

The chromosomes found within an organism that serves as a host to a virus, parasite, or another type of symbiont.

Retroviruses

A group of RNA viruses that insert a DNA copy of their genome into the host cell in order to replicate, like HIV.