About jMetrik

J. Patrick Meyer is the developer and copyright holder of jMetrik. Patrick an Associate Professor in the Curry School of Education at the University of Virginia.

The origins of jMetrik date back to 2002 when I created a free online item analysis tool for www.SurveyReaction.com. That tool was useful for small data sets, but it was limited by server-side processing constraints and VBScript. To overcome these limitations, I created ItemQual, a Java application for item and DIF analysis, in 2005. ItemQual was my first attempt at object oriented programming, and it was not very object oriented. The source code resembled a scripting language, which made it very difficult to modify the code and incorporate new features. Therefore, I started over and created a new software package in 2006. I also changed the name from ItemQual to jMetrik to reflect the design and expanded scope of the software. Since its first release in 2009, jMetrik has undergone two major revisions. Version 2 featured item response theory estimation and scale linking procedures. Version 3 boasts a new interface, enhanced database features and performance, and item response theory score equating.

Who is using jMetrik?
Educators, psychologists, assessment specialists, measurement profesionals, and psychometricians across the globe are using jMetrik. The map below shows the distribution of people who have download jMetrik.

World Map

jMetrik Version History
jMetrik versions have three numbers separated by a period such as 1.0.6 (read as major.minor.variant). The first number indicates the major release version. The second number is the minor release version and the third number is indicates a small variation. Major releases involve structural changes to the program, numerous new features, and improvements to existing features. Minor releases include some new features, small changes to existing features, or important bug fixes. Small variations involve small bug fixes. Release dates for all versions of jMetrik are listed below.

Version Release Date
1.0.0 September 20, 2009
1.0.1 November 8, 2009
1.0.2 November 9, 2009
1.0.3 November 10, 2009
1.0.4 February 14, 2010
1.0.5 April 29, 2010
1.0.6 April 30, 2010
2.0.0 April 6, 2011
2.0.1 April 23, 2010
2.1.0 August 7, 2011
3.0.0 April 8, 2013
3.0.1 April 12, 2013

 

If you have any questions about jMetrik, please send an email to support@itemanalysis.com.