'Ghost Hunting Events: A Complete Guide to Planning and Hosting' By Steve Higgins

If you've ever experienced something strange at home like objects moving by themselves, or hearing a voice in an empty room, then you might have had what parapsychologists call a "spontaneous case."

I thought I'd have a go at making a ghost hunting app - how hard can it be? I wanted to make it as real possible, but could it actually let people talk to spirits?

Parapsychology is a field of study that explores phenomena, beliefs, and experiences that cannot be easily explained by conventional scientific principles.

Imps are mischievous creatures often mentioned in folklore and paranormal tales, typically depicted as small, human-like beings known for causing trouble.

What constitutes the paranormal varies depending upon individual beliefs and over time, as attitudes change, things once deemed paranormal become normal.

Hyperarousal is a state of heightened alertness and sensitivity that every paranormal investigator should be aware of due to its relevance to ghosts and hauntings.

Have your say in our survey which aims to understand the phenomena encountered during paranormal investigations and determine which is most commonly experienced.

I started visiting paranormal hotspots convinced that their psychological impact would lead me to experience ghostly goings on, but after more than 100 visits, I rarely experience as much as a creaking floorboard.

Infrasound is often mentioned in relation to hauntings — sometimes as a cause, sometimes as a way to boost activity, and even as a proposed frequency range for spirit communication.

The term "demon" might be an ancient one, but we explain the modern connotation as they related to a seeming rise in demonic encounters by paranormal investigators.

Many people report ghostly sightings, noises, or the sensation of being touched during the night. Some of these experiences can be explained by parasomnia.

The expectancy effect is a psychological phenomenon where people's expectations influence their perceptions, something that's significant in paranormal investigations.

The Texas sharpshooter fallacy is a mistake in thinking where evidence supporting a paranormal conclusion is accepted while that which doesn't is ignored.

The double-blind protocol is a research method used to ensure fairness and objectivity when conducting experiments, something that is also vitally important to paranormal research.

Test your knowledge of various terms commonly used in the field of paranormal investigations with 20 questions about the concepts that ghost hunters encounter.

The power of suggestion, when a person believes something due to being influenced by someone else's suggestion, plays a significant role in the paranormal world.

The Barnum Effect is where people believe vague, general statements apply specifically to them, despite them being broad enough to apply to almost anyone.

Illusory correlation refers to a psychological phenomenon where people mistakenly believe there is a relationship between two events, even when no connection exists.

The principle of replication is a fundamental concept not just in psychology but in all of science, and it should be applied to the field of paranormal research.

Confirmation bias is our psychological tendency to favour information that confirms our existing beliefs or expectations, regardless of whether it is true.