- Latent trait estimation
- Reliability and measurement error analysis
- Validity and correlation structure
- Complex analysis of item functioning
- ... and more via add-on modules
SIA offers an interactive psychometric analysis of educational tests, psychological and health-related assessments, and other types of multi-item/multi-rater measurements.
SIA provides model equations, parameter estimates and their interpretation.
Several toy data sets are ready to use. You can also upload and analyze your own data.
All methods include sample R code which is ready to copy and paste into R and run locally.
SIA offers automatic generation of HTML and PDF reports.
A workshop on Computational Aspects of Psychometric Methods with ShinyItemAnalysis will be held on NCME 2026 conference, Los Angeles, California, USA on April 8.
We presented a workshop on Modelling Responses in Multi-Item Measurement with R and ShinyItemAnalysis at EAM 2025 conference, University of La Laguna in San Cristobal de La Laguna, Tenerife, Spain.
Workshop on SIA modules was held at the IMPS 2025 conference, University of Minnesota, Minneapolis, MN, USA.
{ShinyItemAnalysis} was updated to 1.5.5!
SIA Modules are now available for installation directly from the app's GUI (Modules tab), see
our
manuscript.
New estimation methods are implemented based on our recent paper.
See the changelog for the full list of changes and bugfixes.
Find more about SIA's news and updates.
{ShinyItemAnalysis} is a free software and you can redistribute it and or modify it
under the terms of the
GNU GPL 3.
When using the {ShinyItemAnalysis} software, we appreciate if you include a reference
in your publications. To
cite the software, please, use:
or
In Czech written papers you can also use