Differences in effect sizes between researcher-developed (RD) and independently developed (ID) outcome measures are widely documented but poorly understood in education research. We conduct a meta-...

The Item Response Warehouse (IRW) is a collection and standardization of a large volume of item response datasets in a free and open-source platform for researchers. We describe key elements of the da...

Analyses of heterogeneous treatment effects (HTE) are common in applied causal inference research. However, when outcomes are latent variables assessed via psychometric instruments such as educationa....

Join PRIISM and Josh Gilbert to learn how to unmask hidden treatment effects within individual test items using Item Response Theory and to understand how to overcome the limitations of traditional si...

This paper addresses the situation in which treatment effects are reported using educational or psychological outcome measures comprised of multiple questions or "items." A distinction is made between...

Analyses of heterogeneous treatment effects (HTE) are common in applied causal inference research. However, when outcomes are latent variables assessed via psychometric instruments such as educational...