VALIDATION By N., Sam M.S. - 12 noun. the procedure involved in identifying the correctness of a tool in gauging what it is made to gauge. VALIDATION: "The validation procedure will rule out whether or not the scale can be used in the trial." Related Psychology Terms Using the Hamilton Depression Rating Scale: A Case Study on Grief ATTITUDE SCALES BDI-II Assessment WECHSLER MEMORY SCALE (WMS) POLYGRAPH THURSTONE ATTITUDE SCALES VALIDITY LANGUAGE (Psycholinguistics) VALIDITY CRITERION Comparison of Assessment Tools Cite this page: N., Sam M.S., "VALIDATION," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/validation/ (accessed January 26, 2022).