Dr Stone Designs a Study to Test the Effectiveness of a New

question 165

Multiple Choice

Dr. Stone designs a study to test the effectiveness of a new treatment for anxiety disorders. After making sure that her participants are roughly similar on important demographic variables, people are randomly assigned to receive either the new therapy or another therapy technique that has already been proven to be effective. Which of the following statements best describes Dr. Stone's study?

• A)Her study uses randomized clinical trials with a placebo control group.
• B)Her study uses randomized clinical trials, but does not have a placebo control group.
• C)Her study does not use randomized clinical trials, but it does have a placebo control group.
• D)Her study does not use randomized clinical trials, and it does not have a placebo control group.

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Definitions:

Anther

Male structure of a flowering plant where pollen is produced; attached to the flower by the filament.

Filament

End-to-end chains of cells that form as cell division occurs in only one plane; in plants, the elongated stalk of a stamen.

Stamen

The male reproductive organ of a flower, typically consisting of a filament and an anther, which produces pollen.

Angiosperms

Flowering plants that produce seeds enclosed within a fruit; they are the largest and most diverse group in the plant kingdom.