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PJ Conducts an Experimental Study on the Effects of Soft

question 23

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PJ conducts an experimental study on the effects of soft music during high stakes science testing. He randomly assigns students at the school. In one condition he does not provide music for testing while in the other group he does provide the music. He administers a pretest at the beginning of the year and a posttest at the end of the year. PJ's design is best represented by which of the following?


Definitions:

English Channel

The body of water that separates Southern England from northern France, and links the North Sea to the Atlantic Ocean.

Terminal Punctuation

The punctuation marks used to denote the end of a sentence, namely the period (.), question mark (?), and exclamation point (!).

Cinnamon

A spice obtained from the inner bark of several tree species from the genus Cinnamomum, used in both sweet and savory foods.

Cumin

A flowering plant in the family Apiaceae, whose seeds are used as a spice for their distinct flavor.

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