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AI
DOI：10.1093/oso/9780198528470.003.0002.png)
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Abstract
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Abstract
One feature of the health sciences literature devoted to measuring subjective states is the daunting array of available scales. Whether one wishes to measure depression, pain, or patient satisfaction, it seems that every article published in the field has used a different approach to the measurement problem. This proliferation impedes research, since there are significant problems in generalizing from one set of findings to another. Paradoxically, if you proceed a little further in the search for existing instruments to assess a particular concept, you may conclude that none of the existing scales is quite right, so it is appropriate to embark on the development of one more scale to add to the confusion in the literature. Most researchers tend to magnify the deficiencies of existing measures and underestimate the effort required to develop an adequate new measure.
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