A researcher assessed an instrument's reliability by administering it to the same individuals on two occasions two weeks apart. This process is referred to as

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Test-retest procedures involve administering the same instrument to the same individuals under the same conditions at two points (or more) in time. Intra-rater reliability refers to a single researcher gathering data from a sample of data sources at two or more points in time. Internal consistency refers to relevance or accuracy.

A Researcher Assessed an Instrument's Reliability by Administering It to the Same