QUINTILE By N., Sam M.S. - 3 20% of a distribution of scores. The first quintile, for example could be the lowest fifth. QUINTILE: "Jerry consistently scored in the fourth quintile." Related Psychology Terms APRAXIA (literally, “inability to act or do”) SCHOLASTIC APTITUDE TESTS MUSIC TESTS RACE DIFFERENCES LEVEL OF ASPIRATION PRENATAL DEVELOPMENT RORSCHACH TEST PLATYKURTIC Using the Hamilton Depression Rating Scale: A Case Study on Grief CREATIVITY TESTS Cite this page: N., Sam M.S., "QUINTILE," in PsychologyDictionary.org, April 28, 2013, https://psychologydictionary.org/quintile/ (accessed July 1, 2022).