Health Measurement Scales

Abstract This book covers in detail how to develop a measurement scale: a questionnaire or instrument, with specific applications in health sciences. Its organization follows the steps developers will go through during the process beginning with how the individual items are developed, and the various biases that can affect responses (e.g., social desirability, yea-saying, framing). It then discusses different response options, such as Likert scales, adjectival scales, visual analogue scales, Harter scales, and face scales, and the advantages and disadvantages of each. The book then explains how to select the best items in the set, using various psychometric criteria; and how to combine the individual items…