Archives of Physical Medicine and Rehabilitation · 1995 · 10 citations · 11 references
EducationEducational AssessmentEducational MeasurementDifferential Item FunctioningItem Response TheoryPsychometricsDefinition Of DisabilityDimensionality AssessmentDisability AssessmentDisability EvaluationMedical Aspects Of DisabilityMedical Model Of DisabilityDisability Severity AssessmentDisability Severity RatingDisability Severity ScalesHealth-related Disability MeasurementSelf-reported Disability Metrics
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Observations are always ordinal; measurements, however, must be interval.
BD Wright, J M Linacre · PubMed · 1989 · 681 citations
Ordinal scales and foundations of misinference.
Charles T. Merbitz, James R. Morris, Jeffrey C. Grip · PubMed · 1989 · 485 citations