# Addressing omitted prior achievement bias in international assessments: an applied example using PIRLS-NPD matched data

> Research article (Assessment in Education Principles Policy and Practice, 2017) · cited 14× · AI/ML

**Wikidata**: [openalex:W2763443196](https://www.wikidata.org/wiki/openalex:W2763443196)  
**Source**: https://4ort.xyz/entity/addressing-omitted-prior-achievement-bias-in-international-assessments-an-applied-example-using-pirls-npd-matched-data