A meta-analysis is a statistical technique for summarizing the results of multiple studies on a particular topic or research question. Its purpose is to draw more robust conclusions about the state of knowledge in a particular research area, by examining the collective results of previous studies.

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In a Meta-Analysis

Question 36

Multiple Choice

In a meta-analysis:

A) previous studies are summarized to draw conclusions about the state of knowledge in a research field
B) the experimenter manipulates some variables, but is not able to manipulate other important variables
C) random assignment is used to control extraneous influences
D) the researcher is unable to clearly demonstrate a cause and effect relationship between variables

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