As evidence-based interventions are scaled, fidelity of implementation, and thus effectiveness, often wanes. Validated fidelity measures can improve researchers' ability to attribute outcomes to the intervention and help practitioners feel more confident in implementing the intervention as intended. We aim to provide a model for the validation of…

Individual Placement and Support (IPS), an evidence-based supported employment model for working-age adults with serious mental illness, also serves transition age adults (TAY; ages 16-24). The IPS-Y is a new IPS fidelity scale tailored to this younger population. Although adopted worldwide, it lacks research on the psychometric properties of its…

Growth-to-standard models evaluate student growth against the growth needed to reach a future standard or target of interest, such as proficiency. A common growth-to-standard model involves comparing the popular Student Growth Percentile (SGP) to Adequate Growth Percentiles (AGPs). AGPs follow from an involved process based on fitting a series of…