?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=A+Logical+Defence+of+Maher's+Model+of+Polythematic+Delusions&rft.creator=Franceschi%2C+Paul&rft.subject=Applied+Cognitive+Psychology&rft.subject=Cognitive+Psychology&rft.subject=Logic&rft.subject=Clinical+Psychology&rft.description=We+proceed+to+describe+a+model+for+the+formation+and+maintenance+of+polythematic+delusions+encountered+in+schizophrenia%2C+which+is+in+adequacy+with+Brendan+Maher's+account+of+delusions.+Polythematic+delusions+are+considered+here+as+the+conclusions+of+arguments+triggered+by+apophenia+that+include+some+very+common+errors+of+reasoning+such+as+post+hoc+fallacy+and+confirmation+bias.++We+describe+first+the+structure+of+reasoning+which+leads+to+delusions+of+reference%2C+of+telepathy+and+of+influence%2C+by+distinguishing+between+the+primary%2C+secondary%2C+tertiary+and+quaternary+types+of+delusional+arguments.+These+four+levels+of+arguments+correspond+to+a+stage+the+nature+of+which+is+respectively+instantial%2C+inductive%2C+interpretative+at+a+monothematic+level+and+interpretative+at+a+polythematic+level.+We+also+proceed+to+identify+accurately+the+fallacious+steps+in+the+corresponding+reasoning.+We+expose+then+the+role+of+apophenia+in+the+elaboration+of+delusional+ideas.+Lastly%2C+we+describe+the+role+played+by+the+hallucinations+in+the+present+model.&rft.publisher=Journal+of+Philosophical+Research&rft.date=2010-11-30&rft.type=Journal+(On-line%2FUnpaginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F7156%2F1%2Fmsd-en.pdf&rft.identifier=++Franceschi%2C+Paul++(2010)+A+Logical+Defence+of+Maher's+Model+of+Polythematic+Delusions.++%5BJournal+(On-line%2FUnpaginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F7156%2F