New: Much improved filtering of IRW tables on the home page! itemresponsewarehouse.org

The Item Response Warehouse is a new data resource for psychometricians interested in developing methods using bigger and more diverse sets of instruments: itemresponsewarehouse.org New paper out now at BRM: doi.org/10.3758/s134...

Publication describing the IRW now out! link.springer.com/article/10.3... Over 1000 datasets in there with tools for pulling directly from R!

🔥Coming July 2: 'Metrics and Models'!🔥 A new seminar series on advanced modelling w/ impact across health/society. 🌍 Open to *ALL*! 🕑 Weds 2pm UK alternating weeks (online) 🔗 metrics-and-models.github.io 📬 [email protected] Brilliant speakers. *Please share*!

Analysis of treatment effects on psychological networks using data from the IRW: "Our results show that causal effects on network strength are both common and uncorrelated with effects on network state." New work from @jbgilbert.bsky.social psycnet.apa.org/doiLanding?d...

As the IRW approaches 1000 tables, there is an obvious need for better approaches when querying appropriate tables. We've added more metadata (including human annotation) and improved R-based functionality for doing just that! itemresponsewarehouse.org/metadata.html

Simulation studies are common in psychometrics. We are trying to make them more relevant to practice by increasing their connection to empirical data. Feedback welcome! osf.io/preprints/ps...

New paper out yesterday in Behavior Research Methods (BRM): link.springer.com/epdf/10.3758... @itemrespwarehouse.bsky.social

For those with psychometric interests: spread the word about this talk on network psychometrics from one of the leaders in that field this coming Wednesday. Details here: ssps.su.domains

We're working to make code available to make these kinds of analyses easy for others to do. For the item-level HTE work, see here: github.com/ben-domingue...

1/ What might data-rich #psychometrics research look like? As a first example, consider @jbgilbert.bsky.social on heterogeneous treatment effects (HTE). Josh uses #irt to examine item-level HTE, with insights drawn from 75 datasets across 48 randomized trials (arxiv.org/abs/2405.00161).

Do you need educational and psychological item response data to do your research? The IRW has 600 item response datasets (more coming!), distributed in a standardized format and ready for analysis.