Sites

Scientific Software International - English
URL: http://www.ssicentral.com/

Provides statistical software for Structural equation modeling/hierarchical linear modeling/Item Response Theory etc.

[ eng ]

Forrest W. Young - English
URL: http://forrest.psych.unc.edu/

shown in filters: Personalia

Biography. Short Vita. e-prints. References. On Significance. On Science. On Programming. On Psychometrics.

[ eng ]

Winsteps, Facets: Rasch Analysis Software - English
URL: http://www.winsteps.com/

Dichotomous Analysis - Rasch - 30,000 items by 1,000,000 persons. Rating Scale Analysis - Andrich - up to 255 categories. Partial Credit Analysis - Masters - up to 255 categories per item.

[ eng ]

Understanding Factor Analysis - English
URL: http://www.hawaii.edu/powerkills/UFA.HTM

By R.J. Rummel.

[ eng ]

Frequently Asked Questions about SEM - English
URL: http://www.gsu.edu/~mkteer/semfaq.html

Structural Equation Modeling FAQ.

[ eng ]

RepGrid Site Home Page - English
URL: http://www.repgrid.com/

This is the home page for Centre for Person-Computer Studies, Knowledge Support Systems, RepGrid, WebGrid, and supported sites such as that for Personal Construct Psychology. WebGrid is a freely available repertory grid elicitation and analysis service that makes RepGrid aavailable through the Internet. It can be accessed at http://tiger.cpsc.ucalgary.ca/. The Personal Construct Psychology site provides information on PCP including the PCP mailing list, PCP societies, journals, relevant other sites, and so on. It can be accessed at http://repgrid.com/pcp/.

[ eng ]

Psychometrika - English
URL: http://www.psychometrika.org/

shown in filters: References and Indices

Psychometrika, the official journal of the Psychometric Society, is devoted to the development of psychology as a quantitative rational science. Issued four times a year, on March 15, June 15, September 15, and December 15.

[ eng ]

Software from Marley Watkins - English
URL: http://espse.ed.psu.edu/spsy/Watkins/Watkins3.ssi

Selection of Macintosh and Windows statistical analysis software, including parallel analysis.

[ eng ]

Psychometric Research - English
URL: http://segalld.home.netcom.com/

This site presents several recent innovations in psychological testing along with some background information on the principle investigator. These innovations address issues arising in the development of large-scale high-stakes tests used by government, educators, and private industry.

[ eng ]

Principal Components and Factor Analysis - English
URL: http://www.statsoft.com/textbook/stfacan.html

The main applications of factor analytic techniques are: (1) to reduce the number of variables and (2) to detect structure in the relationships between variables, that is to classify variables. Therefore, factor analysis is applied as a data reduction or structure detection method (the term factor analysis was first introduced by Thurstone, 1931). The topics listed below will describe the principles of factor analysis, and how it can be applied towards these two purposes. We will assume that you are familiar with the basic logic of statistical reasoning as described in Elementary Concepts.

[ eng ]

Pmetric - Psychometric Software - English
URL: http://userpage.fu-berlin.de/~satow/psysoft.htm

PMETRIC is a PC program that supports the whole process form developing new psychometric scales to reporting and quality assurance. Participants answer the items using a PC or laptop. Results are stored automatically in a central database and in a portable file format. PMETRIC has been used in several research projects (including international studies and projects with adolescents).

[ eng ]

Mx homepage - English
URL: http://www.vcu.edu/mx/

Mx is a combination of a matrix algebra interpreter and a numerical optimizer. It enables exploration of matrix algebra through a variety of operations and functions. There are many built-in fit fuctions to enable structural equation modeling and other types of statistical modeling of data. It offers the fitting fuctions found in commercial software such as LISREL, LISCOMP, EQS and CALIS, along with facilities for maximum likelihood estimation of parameters from missing data structures, under normal theory. Complex 'nonstandard' models are easy to specify.

[ eng ]

Latent Class Analysis and Latent Class Models - English
URL: http://ourworld.compuserve.com/homepages/jsuebersax/

Contents: Latent Class Analysis FAQ. Software. Bibliography. Links. My papers and programs.

[ eng ]

Yahoo! Groups : ingrid - English
URL: http://groups.yahoo.com/group/ingrid/

Free downloadable software for analysing repertory grids.

[ eng ]

Institute for Objective Measurement - English
URL: http://www.rasch.org/

shown in filters: Organizations

The IOM's mission is to bring understanding to measurement.

[ eng ]

THE CORRELATION COEFFICIENT - English
URL: http://www.mega.nu:8080/ampp/rummel/uc.htm

shown in filters: Publications

R.J. Rummel.

[ eng ]

Daniel Rowe's Bayesian Factor Analysis Webpage. - English
URL: http://www.biophysics.mcw.edu/BRI-people/Rowe/BFA.html

Motivation For Model. Outline. Factor Analysis Model. Factor Analysis. Bayesian Factor Analysis. Bayesian Factor Analysis Interpretation. Determining the Number of Factors. Hyperparameter Assessment. Robustness. Correlated Bayesian Factor Analysis.

[ eng ]

Increasing the Validity of Adapted Tests - English
URL: http://www.testpublishers.org/journal01.htm

Adapting or translating achievement, ability, and personality tests and questionnaires prepared in one language and culture into other languages and cultures has had a long history in educational and psychological testing though this fact is not well-known among educational researchers and measurement specialists.

[ eng ]

Fordham University Applied Psychometrics Society Home page - English
URL: http://www.fordham.edu/aps/

: What is psychometrics? What is the Applied Psychometric Society? Statistical Consultation Services. Annual Paper Contest. The Psychometrics Ph.D. Program at Fordham. Fordham Psychometric Alumni. The data resource library.

[ eng ]

Factor Analysis - English
URL: http://www.psych.cornell.edu/Darlington/factor.htm

Factor analysis includes both component analysis and common factor analysis. More than other statistical techniques, factor analysis has suffered from confusion concerning its very purpose. This affects my presentation in two ways. First, I devote a long section to describing what factor analysis does before examining in later sections how it does it. Second, I have decided to reverse the usual order of presentation. Component analysis is simpler, and most discussions present it first.

[ eng ]