Maria Has Been Asked to Be a Subject in a Study

question 68

Multiple Choice

Maria has been asked to be a subject in a study to determine if additional vitamin A will promote the growth of healthy, strong fingernails Since she wants the study to be as close to the "ideal" nutrition intervention study as possible, she will want to be sure that:

• A)only the researcher knows which participants receive vitamin A.
• B)all of the participants are between 18 and 25 years of age.
• C)her chances of getting vitamin A are better than those of anyone else.
• D)half of the participants get something that looks like additional vitamin A but isn't.

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Definitions:

Existing Theory

An established set of ideas or principles aimed at explaining facts or phenomena, already supported by a significant amount of empirical evidence.

Subsequent Research

The studies or investigations conducted after a preliminary study to further explore a subject or hypothesis.

Replicated

The process of conducting a research study again to verify its results and ensure reliability and validity.

Schools of Thought

Various approaches or methodologies within a certain discipline or field of study.