Before revision: Karl von Vierordt in 1868 was the first to record a law of time perception which relates perceived duration to actual duration over different interval magnitudes, and according to task complexity.
After revision: 1868Vierordt, K; () Handbuch der Physiologischen Optik, Tübingen, Ger-many: LauppKarl von Vierordt in 1868 was the first to record a law of time perception which relates perceived duration to actual duration over different interval magnitudes, and according to task complexity.