# Psychological Safety: A Timeline

*Tom Geraghty · History & Foundations*

Charts the emergence of psychological safety using Google Trends data alongside academic and cultural milestones — Edmondson's 1999 paper, Project Aristotle's publication, and the Covid-19 pandemic. A useful historical frame for understanding why PS has become so prominent in the last decade.

- **This page:** https://explore.psychsafety.com/n/psychological-safety-a-timeline/
- **Read the full article on psychsafety.com:** https://psychsafety.com/psychological-safety-a-timeline/
- **Interactive map:** https://explore.psychsafety.com/?node=psychological-safety-a-timeline

## Connected concepts (3)

- [What is PS?](https://explore.psychsafety.com/n/about-psychological-safety.md)
- [Personal and Organizational Change Through Group Methods: The Laboratory Approach](https://explore.psychsafety.com/n/schein-bennis-1965.md) (paper)
- [History of PS](https://explore.psychsafety.com/n/the-history-of-psychological-safety.md)