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SLEIPNER is developed at the Stockholm Laboratory for Developmental Science by Lars R. Bergman (Prof.) and Bassam Michel El-Khouri (Ph.D., Ph.L.) who is also the sole author of the program code. The package is a collection of modules implementing methods of analysis that were carefully chosen to form a self-contained and empirically grounded toolbox for handling longitudinal data within the person-oriented paradigm.

The version of SLEIPNER presented here (version 2.1) is a Windows-program comprising 16 distinct modules forming a workbench for pattern-oriented analysis in the context of the person-oriented approach, structurally formulated to address classificatory questions that arise against a background of cluster analytic oriented investigations of primarily longitudinal, but also cross-sectional data. The release of this version coincides with the release of our book entitled Studying Individual Development in an Interindividual Context which is authored by Bergman, Magnusson, & El-Khouri and published by Lawrence Erlbaum Associates, Inc., 2002 (ISBN 0-8058-3130-4).

Readers of our book, old users, as well as new users are welcome to download SLEIPNER 2.1 (self-extracting archive, ca 1.9 Mb) together with the manual (self-extracting archive, ca 195 kb) and the appendix (pdf-format, ca 40 kb). We require from all our users that they register themselves by sending an email containing name, affiliation, and address to Bassam El-Khouri.

SLEIPNER is exhaustively discussed in the context of the book both from theoretical as well as operational perspectives. But the manual contains technical details and simple examples of program runs which can easily be examined. PLEASE note that additions to the manuals may be done without any notification to the users.Please return to this page to update the manual.

Some updates in version 2.1:

CLUSTER can now handle 4000 cases (2000 cases in vs. 2.0).
EXACON can now handle 50 categories per variable (20 categories per variable in vs. 2.0).
CFA can now handle up to 10 variables each having up to 10 categories (8 variables each having 3 categories).
EVALUATE now runs much faster on large data sets.
Two new modules are introduced: SUBIND and ISOA. Please consult the manual and the book for details on running these modules.

Please note that all the modules in SLEIPNER are "stand alone modules" and as such many of them provide a way of analyzing data in contexts other than the longitudinal or even the classificatory.

Also found on this page are five so-called beta-version modules (coming soon) which will pertain to SLEIPNER 3.0 not to be released anytime in the near future (not for at least a year or so). More modules will be added at times with no prior notice to the users. The users are hereby warned that all of the beta-version modules although functional have not been rigorously tested. We appreciate feedback from the users of these modules as well as the ones pertaining to SLEIPNER 2.1.

Many thanks to our webmaster Henrik Dunér.


© Bassam M. El-Khouri, Ph.D., Ph.L. and Lars R. Bergman, Prof.
www.psychology.su.se/sleipner/
Updated: 2002-11-26