The Procedure Used to Help Ensure That the Experimental and Control

question 20

Multiple Choice

The procedure used to help ensure that the experimental and control groups do not differ in any way that might affect the results of an experiment is called:

• A) variable controlling.
• B) random assignment.
• C) representative sampling.
• D) stratification.

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Definitions:

Parkinson Disease

A progressive neurological disorder characterized by motor symptoms such as tremors, stiffness, and slowed movement, due to the loss of dopamine-producing brain cells.

Muscular Control

Involves the coordinated actions of muscles to perform movements, regulated by the nervous system.

Shaking

Involuntary, rhythmic muscle movements involving to and fro movements of one or more parts of the body, often resulting from neurological conditions, stress, or cold.

Norepinephrine

A neurotransmitter and hormone involved in the body's response to stress, increasing heart rate and blood flow to muscles.