Ghostbusters

Psychologist Peter administers electric shocks to a subject every time he fails to correctly identify a Zener card (0:02) to study the "effect of negative reinforcement on ESP ability." (0:04)

Peter asks librarian Alice, "Have you or a member of your family ever been diagnosed schizophrenic or mentally incompetent?" (0:07)

Peter claims he has "PhD's in parapsychology and psychology." (0:41)

Police accompany possessed accountant Louis who wears a camisole. (1:00)

Peter tells his partners, referring to possessed musician Dana, "I just whacked her up with about 300 cc's of Thorazine."

Ghostbusters II

References in Ex Machina, Joe (2013), Tick, Tick... Boom!, What Lies Beneath, Zombieland