THE GARDEN
Updated 17 Sep 2026
the consistency or precision of measurements under specified considtions
stability across repeated measurements
agreement between raters
internal consistency among items intended to measure the same construct
Cronbach’s alpha concerns internal consistency under assumptions; it is not a universal quality test for every questionnaire
calibration helps identify or correct measurement error but does not establish every aspect of reliability or validity
Measurement Validity
Operational Definition
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Paths through the garden