Graciela wants to study the effects of regular meditation on sleep quality. She creates a document that summarizes the work that other researchers have already done on this topic. What would a psychologist call this document?

A literature review summarizes and evaluates research that other researchers have already published on a topic. Since Graciela is summarizing previous work on meditation and sleep quality, her document is a literature review. A hypothesis is a testable prediction, not a summary of past studies.

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