Residual vs intelligent hauntings: where the idea really comes from
Investigators routinely distinguish "residual" from "intelligent" hauntings as if it were established science. It isn't — and knowing where the distinction actually originates changes how you should use it.
Ask most investigators to describe types of hauntings and you will quickly hear "residual" and "intelligent." A residual haunting, the explanation goes, is a kind of recording — the environment replaying a past event on a loop. An intelligent haunting involves an entity that is aware and can interact. The distinction shapes how investigations are conducted. Here is what the research record actually shows: this is a working categorisation developed within the investigation community, not a scientifically validated taxonomy.
Where the categories come from
The "residual haunting" concept draws heavily on the so-called Stone Tape idea — that buildings might record emotionally charged events and replay them. This was introduced to mass audiences by a BBC television horror drama, The Stone Tape, written by Nigel Kneale and broadcast on Christmas Day 1972. It was fiction. No physical mechanism by which building material could record and replay complex events has ever been identified, and no peer-reviewed study supports it.
The "intelligent haunting" side
The interactive-spirit concept is older and rooted in religious and folkloric traditions worldwide. Within psychical research, the Society for Psychical Research (founded 1882) studied crisis apparitions and post-mortem communications using the best methods of the time; its conclusions remain contested. G. N. M. Tyrrell's 1942 classification of apparitions is a genuine scholarly contribution — but even Tyrrell's categories are frameworks proposed within psychical research, not accepted taxonomy.
What PRN does instead
PRN treats the residual/intelligent distinction as a community working model — useful shorthand for describing reported patterns — while being explicit that neither category has been validated by controlled research. Reported phenomena are described as reported, and the framework used is identified as an investigator categorisation, not established fact.
Sources: Wikipedia — "The Stone Tape" (1972); BFI programme notes; PRN Evidence Standards Hub; PRN Entities database framing note.