A study was conducted to evaluate persons' purported ability to detect
hidden observers. Anecdotally, most people (87%) report that covert o
bservation can be detected. A total of 140 college students individual
ly sat in a room with a two-way mirror and video-monitor camera. They
were told that they might be observed for any or all of the subsequent
5 min. Participants noted whether they felt a hidden observer watched
them during each minute of the 5-min. session. After the session, stu
dents reported if a possible hidden observer watched via a two-way mir
ror or video camera or if they were not watched. Students were unable
to detect observation beyond chance. Possible reasons for the persiste
nce of the belief in detection of covert observation are posited as im
petus for further research.