An interview item that exclusively concerns the central focus of the study is a(n) ____________.

Question

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An essential question is directly related to the central focus of the study and is necessary to gather relevant information from the participant. Extra and throw-away questions are unnecessary and may distract or confuse the participant, while probing questions aim to gather more detailed elaboration on a particular topic, but may not be directly related to the central focus of the study.

An Interview Item That Exclusively Concerns the Central Focus of the Study