This can be seen in experiments for ESP where some clues may be given to the subject inadvertently through sensory channels. Have a look on the demand characteristics; experimenter bias.
Cite this page: N., Sam M.S., "SENSORY LEAKAGE," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sensory-leakage/ (accessed February 5, 2023).