Dossier de preuve de méthode

Lawshe Content Validity Ratio

The Lawshe content validity ratio (CVR) is a simple, quantitative method for judging whether the items of a test or measure actually represent the content they are meant to cover, based on the agreement of a panel of subject-matter experts. Charles Lawshe introduced it in 1975 to address a gap in personnel testing: content validity had long been treated as a matter of judgment with no number attached, leaving practitioners unable to defend item retention decisions objectively. Lawshe's insight was to ask experts a focused question, is this item essential, useful but not essential, or not necessary, and to convert the proportion who call an item essential into a ratio that ranges from minus one to plus one. Items whose CVR exceeds a critical value tied to panel size are retained, and the average CVR of retained items gives a content validity index for the whole instrument. The method's clarity made it a durable standard in test development. It is especially common in human resources, nursing, and health-measure validation.

Sources recorded, not reviewed

Dossier source

Citations copiées telles quelles du dossier source de la méthode. Aucune vérification au niveau de la revendication n'en est déduite.

Lawshe Content Validity Ratio (CVR) and Content Validity Index

Dossier de méthode taxonomique · process-pipeline / organizational-behavior

Lawshe, C. H. (1975). A quantitative approach to content validity. Personnel Psychology, 28(4), 563-575. · DOI 10.1111/j.1744-6570.1975.tb01393.x

Ouvrir la méthode complète

Revendications organisées

Revendications enregistrées dans le registre de preuves, chacune avec sa propre évaluation.

Pas encore de revendications organisées

Cette vue n'invente pas d'évaluation de revendication lorsque le registre n'en contient aucune.

Méthodes apparentées

Généré à partir du graphe de méthodes et présenté comme des relations suggérées par la machine — aucune revendication de preuve n'est déduite.

Same method familyBehaviorally Anchored Rating Scalesmachine-suggested · Relational suggestion, not evidence.Same method familyCritical Incident Techniquemachine-suggested · Relational suggestion, not evidence.Same method familySituational Judgment Testmachine-suggested · Relational suggestion, not evidence.