Always consider all aspects of a haunting. Go into an investigation with a kind heart & gracious attitude. But know that most hauntings can be explained; i.e. house settling, furnace noises etc. As sad as it is, you must also consider the mental & emotional state of the victim as well. Paranoia, delusional aspects & mental illness in general may be a consideration. As a final note; it should also be stated however, that in some cases, an unstable person can actually be open to these types of attacks.