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    GlossaryInternal Consistency

    measures how well items on a test assess the same concept

    Internal consistency refers to the reliability of a test or measurement tool, indicating how well the items within the tool measure the same construct or concept. For example, in a survey measuring stress levels, internal consistency would mean that all the questions consistently reflect the respondent's stress. This is often assessed using statistical methods like Cronbach's alpha, which quantifies the degree to which items correlate with each other.

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