Using validity theory and psychometrics to evaluate and support expanded uses of existing scales.
Carrie R HoutsElizabeth Nicole BushMichael C EdwardsR J WirthPublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2022)
If an existing scale, with minimal modification or additional evidence, can be shown to be fit for a new purpose, considerable effort can be saved and research waste avoided. In many cases, a new instrument is simply unnecessary. Far better to recycle an "old" scale for a new use-with sufficient evidence that it is fit for that purpose-than to "buy" a new one.