The concept of replication is most closely associated with which of the following?

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Replication refers to the ability of a study's results to be repeated and obtained consistently, which is essential for establishing reliability. Internal validity refers to the degree to which a study controls for extraneous variables that could affect the results. Random selection refers to the process of choosing a sample that is representative of the population being studied. The placebo effect refers to the influence of a person's expectation about the effectiveness of a treatment on their actual response to it.

The Concept of Replication Is Most Closely Associated with Which