Henrica C. W. de Vet is a Professor of Clinimetrics in the Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research at VU University Medical Center, Amsterdam. Caroline B. Terwee is an Assistant Professor of Clinimetrics in the Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research at VU University Medical Center, Amsterdam. Lidwine B. Mokkink is a Research Fellow in the Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research at VU University Medical Center, Amsterdam. Dirk L. Knol is an Assistant Professor of Statistics in the Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research at VU University Medical Center, Amsterdam.

'… the book covers such a broad range of topics, researchers at any stage of the scale development or assessment process can be expected to find some utility in the advice and excellent examples … As research on health measurement expands, we expect this book to serve as a helpful companion to the medical and health researcher.' Quality of Life Research

• 1. Introduction; 2. Concepts, theories and models, and types of measurements; 3. The development of a measurement instrument; 4. Field testing – item reduction and data structure; 5. Reliability; 6. Validity; 7. Responsiveness; 8. Interpretation; 9. Systematic reviews of measurement properties; Index.