Spectreclass

Spectreclass is a framework for categorizing spectral phenomena and entities, used in folklore studies, parapsychology discussions, and speculative fiction. The term combines spectre, ghost, with classification, reflecting the aim of organizing observations of ghost-like presence into a systematic scheme.

The framework commonly divides spectres into four primary classes. Class I covers visual or auditory presences that do not interact with observers. Class II includes interactive but non-sentient phenomena that may affect environments or equipment. Class III encompasses intelligent spectres capable of communication, negotiation, or deliberate actions. Class IV refers to remnants or traces that persist with lasting effects, such as residual energy or poltergeist activity.

In practice, spectreclass is used by researchers and writers to describe experience, guide field notes, or support worldbuilding in games and media. It remains controversial and is not recognized as a standard by mainstream science, due to reliance on anecdotal reports, methodological challenges, and variable cultural interpretation.

Related concepts include hauntology, poltergeist, and ghost mythology; the framework frequently informs storytelling in novels, films, and role-playing games.