Two-predictor screener ShinyApp¶
Product or Programme · All products and programmes
Evidence · 3 claims (3 for) · 1 study (1 theoretical),q2· 0 of 1 report an effect size · 3 claims rest on one study
Description¶
A Shiny web application released by Shero et al. that lets educators and researchers test arbitrary correlations and cutoff choices for two-predictor academic-risk screening under the authors' probability-density model.
Components¶
- Two-predictor screener ShinyApp (two_predictor_screener): A web application released by the authors to accompany the simulation analyses. The article states that "a ShinyApp ( https://jshero.shinyapps.io/two_predictor_screener/) was developed allowing any combination of correlations among the variables to be tested as a screener for any cutoff in the same ways presented in this paper." It extends the paper's fixed grid of progress-monitoring correlations, PGS effectiveness values, and learning-disability cutoffs to arbitrary combinations, and was designed so schools can test screener cut-off choices and usage patterns beyond those analyzed. It operationalizes the paper's probability-density approach for practitioners. (Shero et al. (2021))
Claims¶
- Current progress monitoring screeners have low positive predictive value for learning disability risk even at high effectiveness (PPV 34.5%, NPV 96.1% at r = 0.70) [+W]
- Incremental variance predicted by PGS over progress monitoring grows with PGS effectiveness, reaching up to 4% and 8.9% at 10% and 20% predictive power and up to 35.9% at the 50% theoretical limit [+W]
- Adding PGS as an either-cutoff screener alongside progress monitoring raises negative predictive value (fewer false negatives) at all effectiveness levels, while generally lowering PPV [+W]
Related Products and Programmes¶
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Key Sources¶
- Shero, J., van Dijk, W., Edwards, A., Schatschneider, C., Solari, E. J., & Hart, S. A. (2021). The practical utility of genetic screening in school settings. npj Science of Learning, 6:12. https://doi.org/10.1038/s41539-021-00090-y
Page metadata
| Field | Value |
|---|---|
type |
product |
id |
two-predictor-screener-shinyapp |
title |
Two-predictor screener ShinyApp |
description |
A Shiny web application released by Shero et al. |
status |
review |
product_kind |
software |
generated |
by process:settle-candidates on 2026-10-26 |
trust |
unverified — no one has confirmed this page's content |
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