Glossary
Adverse impact
A hiring practice that disproportionately screens out a protected group, measured by the four-fifths rule. It can occur even without intent, which is why assessments should be audited for it.
Related reading
Read the full explainer
A longer guide to Adverse impact and how it is used in hiring.
Adverse Impact and the Four-Fifths Rule, Explained
Adverse impact and the four-fifths rule decide whether your hiring passes a bias audit. How the 80% ratio works, its failure modes, and how to monitor it.
How to Reduce Bias in Hiring: A Practical Guide
Learn how to reduce bias in hiring with structure, not good intentions. Concrete, evidence-based steps for every stage, from the job ad to the final decision.
NYC Local Law 144: What the Bias-Audit Rule Requires
NYC Local Law 144 requires an independent bias audit before an automated hiring tool screens candidates. What the rule covers, who owns it, and what it measures.