What Is the Primary Benefit of Matching

question 54

Multiple Choice

What is the primary benefit of matching?

• A) it eliminates the influence of virtually all known extraneous variables
• B) it eliminates experimenter expectancy and participant effects
• C) it overrides the need for random assignment
• D) the influence of the variables on which participants are matched is spread evenly across groups

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Definitions:

Accommodation

The process by which the eye's lens changes shape to focus near or far objects on the retina or the adaptation of the mind to new information.

Refraction

The bending of light as it passes from one medium to another, which changes its speed and direction.

Constriction

The act or process of making something narrower, tighter, or more enclosed.

Dilation

The process of expanding or widening in size; in physiology, it often refers to the widening of blood vessels or pupils in response to specific stimuli.