In a Research Study, When the Subjects Do Not Know

question 201

Multiple Choice

In a research study, when the subjects do not know who is in the experimental group and who is in the control group, but the experimenters do know, the study is called a(n)

• A)single-blind experiment.
• B)double-blind experiment.
• C)independent experiment.
• D)dependent experiment.

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Definitions:

Oxygen-Poor Blood

Blood that has delivered its oxygen to tissues and organs and is returning to the heart and lungs to be reoxygenated.

Superior Vena Cava

Vein that delivers oxygen-poor blood from the upper body to the heart.

Oxygen-Poor

Environments or situations where the concentration of oxygen is significantly lower than the atmospheric levels, often creating challenges for aerobic organisms.

Inferior Vena Cava

Vein that delivers oxygen-poor blood from the lower body to the heart.