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Maydeu-Olivares, Albert Maydeu-Olivares, Albert- Albert Maydeu-Olivares' homepage at the University of Barcelona: includes some unpublished working papers. Italian Institute of Wartegg Italian Institute of Wartegg- Offers clinical assessment courses, counseling, training and the Wartegg testing methodology. Latent Structure Analysis Latent Structure Analysis- John Uebersax's resource for researchers interested in latent class analysis and latent class models. The Psychometrics Forum The Psychometrics Forum- Independent group of UK psychometric practitioners. Includes information on the benefits of membership, how to join, news, events and FAQ. Institute of Psychometric Coaching Institute of Psychometric Coaching- Offers online practice psychometric tests and courses developed by experienced psychologists. Ability Tests and Psychometric Assessments Ability Tests and Psychometric Assessments- Provides information, resources, and sample ability tests and personality questionnaires. Includes tips on taking tests and how to prep… Psych Press Psych Press- Developer of online and psychology-based psychometric test materials designed to screen and match individuals to particular roles, industries and companies. Reliability and Validity Reliability and Validity- Clear introduction to the nature and assessment of test reliability and validity. Mx Mx- Matrix algebra interpreter and numerical optimizer for structural equation modeling and other types of statistical modeling of data. Includes documentation and example code. L-BFGS-B Nonlinear Optimization Code L-BFGS-B Nonlinear Optimization Code- Bounded optimisation code (FORTRAN) for numerical analysis, from Northwestern University. Item Response Theory Item Response Theory- This website by Lawrence Rudner introduces Item Response Theory, and includes a complete on-line book. The Reliability of Measuring Instruments The Reliability of Measuring Instruments- Offers Tom Knapp's book on reliability of measurement. Paul Barrett Paul Barrett- Free software for (advanced) psychometric analyses. Also a number of presentations on psychometrics. PMetric Psychometric Software System PMetric Psychometric Software System- Shareware for designing, applying, developing, and evaluating psychometric scales. The software features a scale editor, reliability analysis… Winsteps and Facets Rasch Analysis Software Winsteps and Facets Rasch Analysis Software- Software to construct linear measures from ordered qualitative observations. Includes details of training workshops; free student vers… Scientific Software International Scientific Software International- Statistical software for the social sciences. Includes LISREL for structural equation modeling, HLM for hierarchical data analysis, and BILOG, B… Latent Variable Interactions and Quadratics Latent Variable Interactions and Quadratics- Resources focused on latent variable interactions and quadratics. Includes a bibliography, FAQ, Excel templates, full text articles, a… Psychometrika Psychometrika- Print journal of the Psychometric Society. Subscription and submission information and author instructions. Young, Forrest W. Young, Forrest W.- Emiritus Professor of Quantitative Psychology at the University of North Carolina, Chapel Hill. Includes links to the VISta data visualization software, and ple… Understanding Factor Analysis Understanding Factor Analysis- Online textbook providing overview of factor analysis, by political scientist RJ Rummel. Multivariate Data Analysis Multivariate Data Analysis- Outline for Michael Friendly's course on multivariate data analysis and linear statistical models in behavioural science research. Includes bibliograph… The Correlation Coefficient The Correlation Coefficient- Online textbook by political scientist RJ Rummel. Principal Components and Factor Analysis Principal Components and Factor Analysis- Chapter from StatSoft's Electronic Statistics Textbook. Psychometrics Research Unit Psychometrics Research Unit- Research results, questionnaires and publications of the Psychometrics Research Unit (University of Valencia, Spain). Content a mixture of English, Sp… Institute for Objective Measurement Institute for Objective Measurement- Rasch Scaling information from MESA at the University of Chicago. Includes full text articles. International Journal of Middle East Studies International Journal of Middle East Studies- Cambridge publication featuring original research on politics, society and culture in the Middle East from the seventh century to the… Middle Eastern Studies Middle Eastern Studies- Provides academic research on the history and politics of the Arabic-speaking countries in the Middle East and North Africa as well as on Turkey, Iran and … Israel Affairs Israel Affairs- Serves as a means of communication between academics, policy-makers, practitioners, journalists and the informed public. Features information for contributors and …