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Dr Wizard Randomly Assigns People to Two Groups

question 148

Multiple Choice

Dr. Wizard randomly assigns people to two groups. Those in the experimental group receive a "subliminal audiotape" that they are told will improve their self-esteem. The other group receives no treatment. Three weeks later Dr. Wizard interviews them and reports that people in the experimental group show higher self-esteem. What change would IMPROVE the procedure for this research?


Definitions:

Right Lymphatic Duct

Lymphatic duct that empties into the right subclavian vein; drains the right side of the head and neck, the right-upper thorax, and the right-upper limb.

Lymph

A clear fluid that circulates through the lymphatic system, carrying white blood cells and supporting the body's immune system.

Lipid Absorption

The process by which dietary fats are broken down and taken up into the bloodstream from the digestive tract.

Lymphatic System

A network of tissues and organs that help rid the body of toxins, waste, and other unwanted materials, primarily transporting lymph, a fluid containing infection-fighting white blood cells.

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