EXPERIMENTER By N., Sam M.S. - 29 The party devising the experiment. EXPERIMENTER: "Joe was the experimenter and designed th experiment and observed and studied the results." Related Psychology Terms ROSENTHAL EFFECT Terms of Service Comparison of Assessment Tools EXPERIMENTER EFFECT ARISTOTLE (384-322 B.C.) A Comparison of Maternal and Paternal Filicide SOCIAL NORM (Group Norms) SCHOLASTIC APTITUDE TESTS THIRD-PARTY PAYER DELAYED REACTION Cite this page: N., Sam M.S., "EXPERIMENTER," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/experimenter/ (accessed August 9, 2022).