Events of paranormal nature can be best described using the definition of the term itself. They are events that happen beyond normal experience or scientific explanation. Paranormal is a subject that is different from scientific hypotheses or speculations made based on scientific evidence. Scientific topics or subjects are based on observations of empiric nature and data about them are obtained through scientific methods. The existence of the paranormal ones, however, is not based on empirical evidence or data. Suspicion, testimony, and anecdote are often used in the arguments for the latter. ESP, spiritualism, and telepathy are subjects of paranormal nature along with pseudoscience branches of ufology, cryptozoology, and ghost hunting. Ghost hunting deals with everything to do with ghosts, a manifestation of the soul or spirit of a deceased person (some sources also include that of a dead animal). Ghost hunting, therefore, is an activity related to finding proof of the existence of ghosts. The method of this, however, is largely considered not scientific or expanded from scientific method without any empirical bases.
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Ufology is a study of extraterrestrial visitation. The possibility of the existence of life beyond earth cannot be categorized as a paranormal subject per se. Scientists are actively searching for proof of life outside our planet—using hard-science and scientific tools. Ufology, however, emphasizes on the belief that extraterrestrial life forms visit the earth on unidentified flying objects and cause phenomena—which itself is paranormal in nature, meaning they are beyond the normal conditions humans are used to. Cryptozoology is a study of the entities from the folklore record (e.g. mokele-mbembe, chupacabras, Bigfoot, etc.) Cryptozoology is both a pseudoscience and a subculture with many proponents. A person dabbling in cryptozoology is called a cryptozoologist while entities they study are called cryptids.
Research into the paranormal involves a variety of different approaches. It often incorporates anecdotal approach, parapsychological approach, participant-observer approach, skeptical scientific investigation, psychological approach, and neuroscientific approach. To be fair, observing the paranormal through a research perspective is proven to be something hard to do. This is due to lack of or absence of physical evidence that is acceptable enough from the phenomena. The term explains it all; something is called paranormal because it does not conform to what is conventionally expected of nature. If something can be confirmed through a scientific method, it wouldn’t be called paranormal as it no longer fits the definition in the process.