Internet Resources

Structural equation modeling

AERA's SIG/SEM, the Special Interest Group on Structural Equation Modeling of the American Educational Research Association, promotes SEM in the American Educational Research Community, mails out a newsletter and organizes contributed and invited paper sessions at the Annual AERA Meeting. The affordable ($5/year; $8/2_years) Membership in the SIG is open to all SEMers, and is a must for those that are already members of the AERA.
Semnet, a mailing list maintained by Carl E. Ferguson, Jr. and Edward Rigdon, provides a forum for discussions related to structural equation modeling.
Structural Equation Modeling: A Multidisciplinary Journal
Working group structural equation modeling, an informal group of mostly European SEMers.

Patrick J. Curran's pages about SEM, with special consideration of longitudinal growth modeling. Worked examples show how to specify the same conditional and unconditional growth models alternatively with the Amos, CALIS, EQS, HLM, LISREL, Mplus, Mx, and SIMPLIS programs.
EMCOV (by John W. Graham and Scott M. Hofer) uses the EM algorithm to obtain maximum likelihood estimates of means and covariances in the presence of missing data. It can also impute missing values. There are separate EMCOV versions for DOS, NT, and sun systems to be downloaded as executables or self-extracting archive files. The sun version comes with multiple-imputation facilities as discussed in Joe Schafer's (1996) text book on multivariate analysis with missing data. There is also a set of DOS-based multiple-imputation facilities written by John Graham. Additional information can be obtained from John Graham. John Graham requests that you let him know by email if you download EMCOV.
Mx, a SEM program written by Mike Neale. Mx input is matrix-based, and the advanced user will find the program's flexibility rewarding. The Windows and Unix versions of Mx now have a graphical interface.
The LVPLS, NOHARM, and COSAN programs are available at the Jefferson Psychometric Lab, University of Virginia.

Filip Lieven's Internet Survival Guide for Industrial & Organizational Psychologists.

Jack McArdle's structural equation modeling page.
The Measurement Group references resources for health research, evaluation, and statistical modeling.
Mike Neale, author of the Mx program and genetic modeler.
Jason Newsom's extensive list of SEM references and text books.

Edward Rigdon manages Semnet, a discussion forum about structural equation modeling. Apparently, Ed is a Professor at Georgia State University in his spare time.
Randy Schumacker's pages on structural equation modeling and teaching statistics.

American Statistical Association
The Chicago Chapter of the American Statistical Association receives special attention here because, ... well ..., it is situated in Chicago, just like SmallWaters Corporation. Besides, the Chapter's many continuing education workshops and conferences are interesting for statisticians from elsewhere, too.
The Association for Computing Machinery (ACM) provides computing resources including digital libraries of related publications.
Globally Accessible Statistical Procedures features links to functioning statistical programs.

Methodology Center, PennState University, provides methodological consulting, technical support, summer workshops, and information about internet resources.
Institute of Statistics and Decision Sciences, Duke University, shows links to other statistics sites, plus a page of links to Bayesian sites.

Netlib repository of numerical algorithms, written mostly in FORTRAN and C. Maintained cooperatively by AT&T Bell Laboratories, the University of Tennessee, and Oak Ridge National Laboratory.
Oregon Research Institute (ORI) provides sample data and latent growth model specifications for Amos, EQS, LISREL, and Mplus.
The Statistical Support Center at the University of Texas at Austin provides excellent resources for statistical computing. New Amos users will espcially appreciate the Amos Tutorial and Amos FAQ pages.

Assessment Systems Corporation of St. Paul, Minnesota (US), sells software, books and accessories for psychometric testing.
iec ProGAMMA of Groningen, The Netherlands, sells statistical software mostly for the behavioral and social sciences. Also offers workshops, training and consulting services.
MultivariateWare of Goteborg, Sweden, publishes and distributes STREAMS, a pre/postprocessor program for multilevel SEM with Amos, EQS, LISREL, Mplus, and Mx.
The SAS Institute of Cary, NC (US), publishes the SAS (data)base and statistical procedures.
SPSS, Inc. of Chicago (US) publishes statistical software (also distributes Amos under a licensing agreement).

Adobe, publishers of Acrobat and other printing and design tools. Click here to download a free Acrobat (PDF) file reader.

Symantec Corp. distributes system tools such as personal firewalls, Norton Antivirus, and Norton System Doctor.