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Glossary
An ordered response format (often 5- or 7-point) for rating agreement, frequency, or intensity.
A Likert scale is a response format in which respondents rate their level of agreement (or frequency, intensity, etc.) on an ordered set of options — typically five or seven points. Common Likert scales for psychology include "Strongly disagree" → "Strongly agree" or "Never" → "Always."
The scale is named after psychologist Rensis Likert, who introduced it in 1932. Most modern self-report assessments use Likert items because the ordered structure lets researchers compute composite scores and run psychometric analyses.