CONSTANCY By N., Sam M.S. - 9 noun. The propensity of perceptions to stay unmodified regardless of changes in the exterior state of observation. CONSTANCY: "The constancy of the chair in the empty room while the lights dimmed and brightened made Martha question what she was seeing." Related Psychology Terms DREAM-STATE (D-STATE, REM- STATE) BRIGHTNESS CONSTANCY HABIT ADOLESCENCE (Theories) EMOTION (General) CANNON, WALTER BRADFORD (1871-1945) ADAPTATION Comparison of Assessment Tools STIMULUS (literally “goad”) Terms of Service Cite this page: N., Sam M.S., "CONSTANCY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/constancy/ (accessed November 30, 2021).