I am not sure where the name actually comes from, however it is a commonly used term for paranormal investigators I know here in America, oddly enough. If you aren't a paranormal investigator; the Singapore Theory Effect is probably not in your regularly used vocabulary.
I am not sure where the name actually comes from, however it is a commonly used term for paranormal investigators I know here in America, oddly enough. If you aren't a paranormal investigator; the Singapore Theory Effect is probably not in your regularly used vocabulary.