Shayla Conducts a Study in Which a Confederate Dresses Up

question 44

Multiple Choice

Shayla conducts a study in which a confederate dresses up either in nice clothes or shabby clothes. The confederate goes to the mall and asks people for directions. Shayla hypothesizes that more people will help the confederate when he is nicely dressed rather than shabbily dressed. Which of the following represents control of an extraneous variable?

• A) The type of clothing worn by the confederate at the mall
• B) The number of people who stop to give directions
• C) The same student is used as the confederate (sometimes dressed in nice clothes and sometimes dressed in shabby clothes)
• D) None of the above.

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Definitions:

Pulmonary

Related to the lungs or the respiratory system.

Endocrine

Pertains to the system of glands that release hormones directly into the bloodstream to regulate bodily functions.

Respiratory

Pertaining to the process of inhaling oxygen and exhaling carbon dioxide from the body.

Somatic Nervous System

The body system consisting of the sensory nerves, whose function is to convey information from the skin and muscles to the central nervous system about conditions such as pain and temperature, and the motor nerves, whose function is to tell muscles what to do.