EFFICACY By N., Sam M.S. - 77 1.The competence of behavioural performance with reference to a person's perception of performance capabilities. 2. Pharmacology. Dealing with dose relationship. EFFICACY: "Efficacy deals with how we percieve our performances." Related Psychology Terms Ethics and Legal Course: Landmark Legal Case LEVEL OF ASPIRATION SULLIVAN, HARRY STACK (1892- 1949) THORNDIKE, EDWARD LEE (1874- 1949) Counselor's Role in Emergency Teams POTENCY Developing a Case Study VISUAL-SEARCH PERCEPTUAL DISORDER Hitler and Conformity APRAXIA (literally, “inability to act or do”) Cite this page: N., Sam M.S., "EFFICACY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/efficacy/ (accessed September 26, 2022).