Before revision: Vierordt's law is "a robust phenomenon in time estimation research that has been observed with different time estimation methods".Fortin, C. and Rousseau, R. (1998) Interference from short-term memory processing on encoding and reproducing brief durations .
After revision: Vierordt's law is "a robust phenomenon in time estimation research that has been observed with different time estimation methods".Fortin, Claudette; and Rousseau, Robert; (1998) Interference from short-term memory processing on encoding and reproducing brief durations .