🔬Measurement reliability

A reliable measurement yields a stable result when the procedure is repeated, so without sufficient reliability, even a beautifully formulated hypothesis remains on shaky ground.

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📖3 min read📊Level 6🗺️3 subtopics📅April 16, 2026

Author: Бессмертный А.П.

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Test-retest reliability
If a measurement is repeated under similar conditions and the result changes suddenly for no reasonable reason, the problem is most likely with the instrument rather than the object itself.
Internal consistency of the scale
If items on the same scale measure the same thing, they should behave consistently, so internal reliability is tested separately from repeatability over time.
Inter-rater agreement
When data are coded by humans, reliability depends on how different raters arrive at similar results using the same protocol.

# Надёжность измерения Надёжное измерение даёт устойчивый результат при повторении процедуры, поэтому без достаточной надёжности даже красиво сформулированная гипотеза остаётся на зыбком основании. Эта тема раскрывает узел "Операционализация" и нужна для того, чтобы карта не заканчивалась общим названием без внутренней структуры.

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What is Measurement reliability?Measurement reliability: lecture Measurement reliability: overview

🔬Measurement reliability

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