An error by the investigator in the perception or recording of data.
EXPERIMENTER OBSERVER EFFECT: "In the experimenter observer effect Joe incorrectly recorded the numbers in the wrong column."
Cite this page: N., Sam M.S., "EXPERIMENTER OBSERVER EFFECT," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/experimenter-observer-effect/ (accessed August 11, 2022).
