# Stress enhances model-free reinforcement learning only after negative outcome

> Research article (PLoS ONE, 2017) · cited 38× · AI/ML

**Wikidata**: [openalex:W2737663691](https://www.wikidata.org/wiki/openalex:W2737663691)  
**Source**: https://4ort.xyz/entity/stress-enhances-model-free-reinforcement-learning-only-after-negative-outcome