What to Do With “Moderate” Reliability and Validity Coefficients?
Copyright policy )What to Do With “Moderate” Reliability and Validity Coefficients?
Clinimetric studies may use criteria for test-retest reliability and convergent validity such that correlation coefficients as low as .40 are supportive of reliability and validity. It can be argued that moderate (.40-.60) correlations should not be interpreted in this way and that reliability coefficients <.70 should be considered as indicative of unreliability. Convergent validity coefficients in the .40 to .60 or .40 to .70 range should be considered as indications of validity problems, or as inconclusive at best. Studies on reliability and convergent should be designed in such a way that it is realistic to expect high reliability and validity coefficients. Multitrait multimethod approaches are preferred to study construct (convergent-divergent) validity.
- University Medical Center Utrecht Netherlands
- University of Groningen Netherlands
- University Medical Center Groningen Netherlands
Observer Variation, Psychometrics, Research Design, Rehabilitation, Outcome assessment (health care), Humans, Reproducibility of Results, Validation studies as topic, Physical Therapy Modalities
Observer Variation, Psychometrics, Research Design, Rehabilitation, Outcome assessment (health care), Humans, Reproducibility of Results, Validation studies as topic, Physical Therapy Modalities
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