Handbook of Statistics, Vol.26: Psychometrics

The area of Psychometrics, a field encompassing the statistical methods used in Psychological and educational testing, has become a very important and active area of research, evident from the large body of literature that has been developed in the form of books, volumes and research papers.Mainstream statisticians also have found profound interest in the field because of its unique nature.This book presents a state of the art exposition of theoretical, methodological and applied issues in Psychometrics. This book represents a thorough cross section of internationally renowned thinkers who are inventing methods for dealing with recent challenging psychometric problems.Key Features/- Emphasis on the most recent developments in the field- Plenty of real, often complicated, data examples to demonstrate the applications of the statistical techniques- Information on available software

• Authors from the leading testing companies
• Emphasis on the most recent developments in the field
• Plenty of real, often complicated, data examples to demonstrate the applications of the statistical techniques
• Information on available software

book “Ancient Inhabitants of Jebel Moya” published by the Cambridge Press under the joint authorship of Rao and two anthropologists. On the basis of work done at CU during the two year period, 1946-1948, Rao earned a Ph.D. degree and a few years later Sc.D. degree of CU and the rare honor of life fellowship of Kings College, Cambridge.

He retired from ISI in 1980 at the mandatory age of 60 after working for 40 years during which period he developed ISI as an international center for statistical education and research. He also took an active part in establishing state statistical bureaus to collect local statistics and transmitting them to Central Statistical Organization in New Delhi. Rao played a pivitol role in launching undergraduate and postgraduate courses at ISI. He is the author of 475 research publications and several breakthrough papers contributing to statistical theory and methodology for applications to problems in all areas of human endeavor. There are a number of classical statistical terms named after him, the most popular of which are Cramer-Rao inequality, Rao-Blackwellization, Rao’s Orthogonal arrays used in quality control, Rao’s score test, Rao’s Quadratic Entropy used in ecological work, Rao’s metric and distance which are incorporated in most statistical books.

He is the author of 10 books, of which two important books are, Linear Statistical Inference which is translated into German, Russian, Czec, Polish and Japanese languages,and Statistics and Truth which is translated into, French, German, Japanese, Mainland Chinese, Taiwan Chinese, Turkish and Korean languages.

He directed the research work of 50 students for the Ph.D. degrees who in turn produced 500 Ph.D.’s. Rao received 38 hon. Doctorate degree from universities in 19 countries spanning 6 continents. He received the highest awards in statistics in USA,UK and India: National Medal of Science awarded by the president of USA, Indian National Medal of Science awarded by the Prime Minister of India and the Guy Medal in Gold awarded by the Royal Statistical Society, UK. Rao was a recipient of the first batch of Bhatnagar awards in 1959 for mathematical sciences and and numerous medals in India and abroad from Science Academies. He is a Fellow of Royal Society (FRS),UK, and member of National Academy of Sciences, USA, Lithuania and Europe. In his honor a research Institute named as CRRAO ADVANCED INSTITUTE OF MATHEMATICS, STATISTICS AND COMPUTER SCIENCE was established in the campus of Hyderabad University.

Sandip Sinharay is the Linda Cook Chair in the Science of Measurement at the ETS Research Institute. He received his M.Stat degree from Indian Statistical Institute, Kolkata, India, and his Ph.D. degree from the Department of Statistics at Iowa State University in 2001 before joining ETS in the same year. Dr. Sinharay is the current editor of Psychometrika and a past editor of the Journal of Educational Measurement (2020-2022) and the Journal of Educational and Behavioral Statistics (2010-2014). He has received seven awards from the National Council on Measurement in Education including the Career Contributions Award (2025), the award for Technical or Scientific Contributions to the Field of Educational Measurement (in 2009 and 2015), and the Jason Millman Promising Measurement Scholar Award (2006). He received the ETS Scientist award in 2008 and the ETS Presidential award twice. Dr. Sinharay has co-authored a book on subscores and coedited two published volumes: Handbook of Statistics, Volume 26 (2007; with C. R. Rao) and Looking Back (2011; with Neil J. Dorans). He authored or coauthored more than 150 articles in peer-reviewed journals and edited books. His research interests include Bayesian statistics, culturally responsive assessments, detection of test fraud, test fairness, missing data analysis, item response theory, model checking and model selection methods, and reporting of diagnostic scores. Some of his research has been funded by U.S. federal agencies including the Department of Education and the National Science Foundation.