Blog Archives
- March 2023
- June 2022
- May 2022
- April 2022
- September 2021
- August 2021
- June 2021
- April 2021
- November 2020
- September 2020
- July 2020
- June 2020
- January 2020
- September 2019
- August 2017
- July 2017
- May 2017
- April 2017
- March 2017
- August 2016
- July 2016
- June 2016
- May 2016
- March 2016
- February 2016
- December 2015
- November 2015
- September 2015
- June 2015
- March 2015
- February 2015
- October 2014
- September 2014
- August 2014
- July 2014
Vector Software Acquisition, a sole subsidiary of Vector Psychometric Group, acquired Scientific Software International, Inc. expanding Vector’s statistical software offerings.
Vector Psychometric Group (VPG), a leading provider of psychometric and data analytic solutions for clinical outcomes, educational, and psychological assessment, has acquired Scientific Software International, Inc. (SSI), a market-leader in statistical software for social, behavioral, and biostatistical sciences.
SSI has been developing, publishing, and distributing specialized statistical software products since 1971. SSI has been a driving force behind many widely used statistical software packages, which includes HLM® and SuperMix® for multilevel modeling; BILOG-MG®, PARSCALE®, and IRTPRO® for item response theory modeling; and LISREL®, the progenitor of structural equation modeling.
Jointly VPG and SSI provide nearly 60 years of statistical software development experience. This combined experience will allow the companies to expand their current software capabilities, rejuvenate existing products, and build on their long history of advancing the psychometric and behavioral analytic sciences through software.