RATE OF CHANGE By N., Pam M.S. - April 28, 2013 The change in a variable per unit time divided by the value of the variable prior to the change. Example: rising from 10 to 20 the rate of change is (20-10)/10=10/10=a rate of change of 1. RATE OF CHANGE: "The rate of change in the variable was 1." Related Psychology Terms BASE RATE REGRESSION ANALYSIS CATASTROPHE THEORY BASE-RATE FALLACY NEGATIVE ACCELERATION MUSCLE-TENSION GRADIENT CATASTROPHE THEORY ANALYSIS OF COVARIANCE (ANCOVA) CONTINUOUS VARIABLE MICROSCOPIC LEVEL Cite this page: N., Pam M.S., "RATE OF CHANGE," in PsychologyDictionary.org, April 28, 2013, https://psychologydictionary.org/rate-of-change/ (accessed April 6, 2020).