A combination of sensory perceptions, unusual phenomena, and psychological reactions are the most widespread indicators of the ghostly presence in the supposedly haunted places. They regularly report cold spots in the rooms, flickering lights, sudden decreases in temperature, and electronic disturbances including malfunctioning devices. Odd sounds, such as footsteps, Whispers, knocking or disembodied voices are also frequently mentioned. In other instances, they actually believe that someone is watching or following them even when they are alone. Visual sightings include dark shapes out of the corner of the eye to clearer images.
They also complain of objects that move by themselves, doors creaking open or slamming closed without any physical reason and pets acting strangely such as barking at nothing. Strong fear or anxiety or mood changes may occur without any obvious reasons. In many cases, these manifestations are focused on certain areas such as basements, attics, or old pieces of furniture. Although paranormal investigators employ EMF meters and audio recorders to establish the presence of anomalies, most of these indications may bear non-paranormal implications.
Hallucinations, discomfort, and unease can be caused by such environmental factors as mold and high electromagnetic fields or even carbon monoxide leaks. Thus, even though most people tend to relate such signs to the supernatural activity of ghosts, according to skeptics, they have a psychological or environmental explanation. However, repeated and dramatic appearances tend to cement the tourist spot as haunted especially when unrelated witnesses share the same experience. These signs have the ability to invoke wonder of the unknown either spiritually or scientifically.