What happened in the 1920s?
📊 First Use of the Lie Detector (1921): Innovations in criminal psychology and law enforcement.
Transcript
...
Further Reading
- A Brief History of Lie Detection | Psychology Today (psychologytoday.com)
- Brief history of the polygraph (kellypolygraphe.com)
- The Invention of the Polygraph, and Law Enforcement's Long ... (crimereads.com)
- History of the Polygraph Machine | (untoldhistory.org)
- What Were the First Uses for Polygraph Devices? (liedetectortest.au)
- The curious story of how the lie detector came to be - BBC News (bbc.com)
- Historical Techniques of Lie Detection - PMC - NCBI (nih.gov)
- Sustainable, Innovative and Intelligent Societies and Cities ... (dokumen.pub)
- A Participatory Action Research Project in Catchment Management (proquest.com)