Hello world. For all progress in our project @ImprovingILSA, follow us through our website embracingheterogeneity.com

Convenience sampling can introduce systematic bias into the estimates in simulation. An example is demonstrated in this blogpost by generating a background questionnaire and cognitive response in lsasim and then fitting latent regression model in TAM. embracingheterogeneity.githu…

A new blog post outlines how you can obtain comparable item parameter estimates in PARSCALE, mirt, and TAM for two-parameter IRT model. And, specifying item parameters for lsasim. embracingheterogeneity.githu…

"No one likes a bully: How systematic is international bullying in fourth grade?" say @lrutkowski and @DRutkowski_EDU at the symposium on IEA Compass: Briefs in Education series #IEAIRC.

"Is democracy overrated? Latin American students’ support for dictatorships" a presentation by @ImprovingILSA partner @asandovalh from the University of Bath at the symposium on IEA Compass: Briefs in Education series #IEAIRC

Last presentation at the symposium entitled, "On test taking motivation in MST" presented by @ylindaliaw (with @lrutkowski and @davidru as co-authors).

The next presentation at the sympsium is enttled, "Differential item functioning in MST" by Montesrrat Valdivia, @lrutkowski and @DRutkowski_EDU

Item parameter desirable properties - higher slopes are always better?, asks Dubravka Svetina in her presentation entitled, "Module length and routing methods in MST."

First paper presented was entitled, "Parameter estimation stability and probabilistic routing in MST" by @lrutkowski and @DRutkowski_EDU

Join the @ImprovingILSA team as they give their symposium, "The future of international assessment? The promise and challenge of a multistage design in IEA studies" at @iea_education IRC 2019.

An article by @lrutkowski, Svetina & @ylindaliaw provides evidence of artifactual fit improvement, pointing to the possibility of data dredging for improved model-data consistency in challenging invariance contexts with large numbers of groups. scholarworks.iu.edu/dspace/h…

Researchers take on effectiveness of international assessments in latest project. education.indiana.edu/news-e… via @IUSchoolofEd

Happy New Year. Thank you all for being with us through 2018. We hope that in 2019 you will continue to grow with us.

For more updates about the Embracing Heterogeneity Project, please visit: embracingheterogeneity.com/

Tyler Matta, @lrutkowski, @DRutkowski_EDU, @lindaliawww present an article that provides an overview of the R package 'lsasim', designed to facilitate the generation of data that mimics a large scale assessment context. link.springer.com/content/pd…

Looking forward to the next two days #FREMO2018

"...ILSAs are—and should be—here to stay. They can serve as powerful instruments of change, although the nature and extent of their influence varies by country and over time" - Singer & Braun (2018). Read article here: science.sciencemag.org/conte…