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Principal Components and Factor Analysis - http://www.statsoft.com/textbook/stfacan.html
Chapter from StatSoft's Electronic Statistics Textbook. |
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Psychometrika - http://www.psychometrika.org/
Print journal of the Psychometric Society. Subscription and submission information and author instructions. |
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Scientific Software International - http://www.ssicentral.com/
Statistical software for the social sciences. Includes LISREL for structural equation modeling, HLM for hierarchical data analysis, and BILOG, BILOG-MG, MULTILOG, PARSCALE, and TESTFACT for IRT-based test analysis. |
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Bayesian Factor Analysis - http://www.biophysics.mcw.edu/BRI-people/Rowe/BFA.html
Describes the Bayesian approach to factor analysis, which incorporates prior information and eliminates the need for rotation. Includes some full-text articles. |
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Institute for Objective Measurement - http://www.rasch.org/
Rasch Scaling information from MESA at the University of Chicago. Includes full text articles. |
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Young, Forrest W. - http://forrest.psych.unc.edu/
Emiritus Professor of Quantitative Psychology at the University of North Carolina, Chapel Hill. Includes links to the VISta data visualization software, and plenty of resources for ALSCAL multidimensional scaling, including FORTRAN source code. |
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Mx - http://www.vcu.edu/mx/
Matrix algebra interpreter and numerical optimizer for structural equation modeling and other types of statistical modeling of data. Includes documentation and example code. |
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L-BFGS-B Nonlinear Optimization Code - http://www.ece.northwestern.edu/~nocedal/lbfgsb.html
Bounded optimisation code (FORTRAN) for numerical analysis, from Northwestern University. |
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Factor Analysis - http://www.psych.cornell.edu/Darlington/factor.htm
Introduction to factor analysis, with worked examples. |
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Item Response Theory - http://edres.org/irt/
This website by Lawrence Rudner introduces Item Response Theory, and includes a complete on-line book. |
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RepGrid - http://www.repgrid.com/
Includes the Centre for Person-Computer Studies, Knowledge Support Systems, RepGrid and WebGrid software details, and the Personal Construct Psychology site. Many full-text articles for download. |
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Winsteps and Facets Rasch Analysis Software - http://www.winsteps.com/
Software to construct linear measures from ordered qualitative observations. Includes details of training workshops; free student version and manual available for download. |
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Latent Class Analysis and Latent Class Models - http://ourworld.compuserve.com/homepages/jsuebersax/
John Uebersax's resource for researchers interested in Latent Class Analysis (LCA) and Latent Class Models. Includes factor analysis of binary data. |
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Psychometrics Research Unit - http://www.uv.es/psicometria
Research results, questionnaires and publications of the Psychometrics Research Unit (University of Valencia, Spain). Content a mixture of English, Spanish, Valencian and Portuguese. |
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Multivariate Data Analysis - http://www.psych.yorku.ca/lab/psy6140/
Outline for Michael Friendly's course on multivariate data analysis and linear statistical models in behavioural science research. Includes bibliographies, computing guides, notes, and SAS examples covering topics such as regression, ANOVA, and factor analysis. |
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Multidimensional Scaling - http://www.ncl.ac.uk/mds/
Searchable bibliography and selection of recent papers, from the University of Newcastle. |
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Maydeu-Olivares, Albert - http://www.ub.es/personal/amaydeu/amaydeuen.html
Albert Maydeu-Olivares' homepage at the University of Barcelona: includes some unpublished working papers. |
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Paul Barrett - http://www.pbarrett.net/
Free software for (advanced) psychometric analyses. Also a number of presentations on psychometrics. |
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PMetric Psychometric Software System - http://userpage.fu-berlin.de/~satow/psysoft.htm
Shareware for designing, applying, developing, and evaulating psychometric scales. The software features a scale editor, reliability analysis, central results database and other features. |
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Article: Increasing the Validity of Adapted Tests - http://www.testpublishers.org/journal01.htm
Hambleton and Patsula (1999) article providing guidelines for adapting tests for cross-cultural and international uses--includes the ITC's Test Adaptation Guidelines. |