FLOOR EFFECT By N., Sam M.S. - 137 the inability of a test to measure or discriminate below a certain point, usually because its items are too difficult. Compare ceiling effect. FLOOR EFFECT: "The floor effect is a test measure that won't go below a certain point." Related Psychology Terms Comparison of Assessment Tools SCHOLASTIC APTITUDE TESTS Using the Hamilton Depression Rating Scale: A Case Study on Grief APRAXIA (literally, “inability to act or do”) ACHIEVEMENT TESTS MASCULINITY-FEMININITY TESTS ATTITUDE SCALES SENTENCE COMPLETION METHOD LEGAL PSYCHIATRY (Forensic Psychiatry) LEVEL OF ASPIRATION Cite this page: N., Sam M.S., "FLOOR EFFECT," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/floor-effect/ (accessed June 29, 2022).