Sapna Is Interested in the Influence of Nutrition on Reaction

question 69

Multiple Choice

Sapna is interested in the influence of nutrition on reaction time.She assigns participants to eat a salad and fruit for dinner every day for a week or to eat fast food each day.She then brings participants into the lab and asks them to push a button on a keyboard as fast as they can every time they hear a particular sound.What are the operational definitions of the variables in Sapna's study?

• A) Nutrition; whether participants eat a salad or fast food
• B) Nutrition; reaction time
• C) Whether participants eat salad or fast food; reaction time
• D) Whether participants eat salad or fast food; how quickly they push the button when they hear the sound

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Definitions:

Arterial Blood Gas

A test that measures the amounts of oxygen and carbon dioxide in the arterial blood, indicating the efficiency of lung function.

Capillary Puncture

A procedure to obtain blood samples from a capillary bed, commonly used for tests requiring small amounts of blood.

Antiseptic

An agent that is applied to living tissues or skin to reduce the possibility of infection, sepsis, or putrefaction by inhibiting microbial growth.

Anaerobic Bacteria

Bacteria that can live and grow in environments lacking oxygen.