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Researchers at one point in time assess and compare the performance of different age groups on the SAT. The procedure used in this research best illustrates:__________.

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Answer:

cross-sectional

Step-by-step explanation:

cross-sectional study is a kind of study which investigate variables through analyzed the data collected in one specific time for a population. In this study, sample of participants are the same in all variables except one.

in the mentioned research, changing variable is age.

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