"Leighton and Gierl make a solid contribution by outlining how protocol analysis and verbal reports can be used to gather systematic information on how examinees think about and solve the tasks that appear on tests...This book is an excellent example of the work under way in educational measurement and psychometrics to address the challenges of educational improvement...The collective work presented in this book inspires hope and gives us every reason to take heart that the diagnostic challenge in education is very much on!"
Howard t. Everson, PsycCritiques