Scientific Software International (SSI) publishes statistical data analysis software: LISREL (structural equation model/SEM, survey generalized linear model/SGLIM), 
HLM (hierarchical linear modeling, multilevel model) and Item Response Theory/IRT (BILOG-MG, MULTILOG, PARSCALE)Scientific Software International (SSI) publishes statistical data analysis software: LISREL (structural equation model/SEM, survey generalized linear model/SGLIM), 
HLM (hierarchical linear modeling, multilevel model) and Item Response Theory/IRT (BILOG-MG, MULTILOG, PARSCALE)Scientific Software International (SSI) publishes statistical data analysis software: LISREL (structural equation model/SEM, survey generalized linear model/SGLIM), 
HLM (hierarchical linear modeling, multilevel model) and Item Response Theory/IRT (BILOG-MG, MULTILOG, PARSCALE)

  Contacting SSI

The easiest way to contact us is by email. For general questions, or inquiries regarding sales, orders, workshops or customer service, please write to sales@ssicentral.com.

For help using software you have purchased or feedback on existing software, please see the Technical Support page for additional assistance.

For questions or comments regarding this website, write to webmaster@ssicentral.com.

You can also contact us offline:

  • By fax: +1-847-675-2140
  • By phone: +1-847-675-0720
  • By regular mail:
    Scientific Software International, Inc.
    7383 N. Lincoln Avenue, Suite 100
    Lincolnwood, IL 60712-1747 USA
 


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7383 N. Lincoln Ave., Suite 100, Lincolnwood, IL 60712-1747