Measurement Theory in Action: Case Studies and Exercises comprises twenty modules, each corresponding to entire chapters in typical measurement theory texts. The modules begin with introductory concepts and a review of statistics; progress through conceptions of content, criterion-related, and construct validation, validity generalization and test-bias; and conclude with more advanced topics such as multiple regression and item response theory (IRT). Each module is composed of an overview, case studies, exercises, Internet references, and suggested further readings. An extensive glossary of key terms is also provided for quick reference. An Instructor's Resources CD containing exercises and assignments is also available.
Classical True Score Theory and Reliability
Any phenomenon we decide to “measure” in psychology, whether it is a physical or mental characteristic, will inevitably contain some error. For example, you can step on the same scale three consecutive times to weigh yourself and get three slightly different readings. To deal with this, you might take the average of the three weight measures as the best guess of your current weight. In most field settings, however, we do not have the luxury of administering our measurement instrument multiple times. We get one shot at it and we had better obtain the most accurate estimate possible with that one administration. Therefore, if we have at least some measurement error estimating a physical ...