EXPECTANCY EFFECT By N., Pam M.S. - April 7, 2013 The effect of a person's expectations about another person's behaviour on the behaviour of the person. See experimenter expectancy effect. EXPECTANCY EFFECT: "The expectancy effect looks at expected behaviour by a person." Related Psychology Terms ROSENTHAL EFFECT EXPERIMENTER EFFECT EXPECTANCY CONTROL DESIGN DEMAND CHARACTERISTICS SELF-FULFILLING PROPHECY EXPERIMENTER BIAS PYGMALION EFFECT MODELING EFFECT MISINFORMATION EFFECT SICK ROLE Cite this page: N., Pam M.S., "EXPECTANCY EFFECT," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/expectancy-effect/ (accessed September 26, 2020).