What kind of study uses a methodology in which participants are matched on a particular characteristic before being assigned to the different levels of the independent variable?

Matched subjects design

Explanation:

Matched subjects design is a form of study that use different experimental groups or participants from various groups, however, these participants or subjects have been closely matched before they are assigned to different levels of independent variable.

This kind of study research is often used when researcher intends to compare different variables without using large groups or randomization.

It is easier to conduct, when participants are matched with single but relevant variable (often a variable that has effect on dependent vairable in a study) are rate r than multiple variables.

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