category · evidence-based answer
What is reliability and validity in HR assessments and surveys?
The short answer
Reliability is whether an instrument measures consistently; validity is whether it measures the right thing and predicts what it should. They are the gatekeeping layer — an assessment without reliability coefficients and criterion-validity evidence should not drive decisions, however polished it looks.
The problem underneath
Most HR practitioners deploy assessments without reviewing validation evidence; reliability coefficients and criterion validity studies are the technical gatekeeping layer that determines whether an instrument may be used at all.
The evidence
- 205+ profiled and searchable works
- Original research bridging the literature to practice
- The source-graded, citation-verified organizational-science registry
- Effect-size / validity findings
Every claim on this site traces to a graded source — see the proof graph.
Go deeper
Related questions
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reliabilityconstruct validitycriterion validitypsychometric assessmentHR instruments