A 2004 psychological study involving 174 members of the Society for Psychical Research completed a delusional ideation questionnaire and a deductive reasoning task. The study found that "individuals who reported a strong belief in the paranormal made more errors and displayed more delusional ideation than skeptical individuals". The study also claims that reasoning abnormalities may have a causal role in the formation of paranormal belief.Lawrence, E. & Peters, E. (2004). Reasoning in believers in the paranormal. Journal of Nervous & Mental Disease, 192, 727–733.
a 2004 pSycholoGICal Study InVolviNG 174 members Of The SocIETy foR PSYcHicAL rEsEarch CompLeteD A deLUSiOnaL ideaTioN quEstionnaIRE and a DedUCtiVe ReaSOning tAsK. The studY FounD ThAt "IndiviDuals who RePortEd A sTrong BeLiEF In the paRanORmAl made morE errOrS And displaYed mOre dElusional ideaTiOn tHan SKEptIcaL indIvIduals". THE stUDy also cLaimS ThaT reaSoning abnoRmalities mAy have a CaUsal rOlE in The FORMatioN Of pAraNormal beLieF.LawrEnce, E. & Peters, e. (2004). reasoNIng in bElievers iN tHe pAraNORmal. journal Of NErvoUS & mEnTal diseASe, 192, 727–733.