00100				PREFACE
00200		Something  "artificial"  is  manmade.     Someone  "paranoid"
00300	believes  others  have  malevolent intentions towards him. Artificial
00400	paranoia  represents  an  attempt  to  computer  simulate  naturally-
00500	occurring  paranoia. Such an attempt is of interest to psychiatrists,
00600	psychologists, computer  scientists,  and  behavioral  scientists  in
00700	general.
00800		The  significance  of  this  simulation  model  lies  in  its
00900	appropriateness,  systemicity,  and  testability.  Psychiatrists deal
01000	with their  patients  at  the  symbolic  level  of  natural  language
01100	communication.   It   is   at  a  symbolic  level  of  analysis  that
01200	explanations of symbolic behavior are the most appropriate and useful
01300	in  providing understanding. Since the model consists of an algorithm
01400	running on a computer, the consistency or  systematicity  requirement
01500	for  a  conjunction  of  hypotheses  is  met. This new conjunction of
01600	hypotheses represents the first model of  psychopathology  which  has
01700	been  tested  by  comparing  its linguistic behavior in a psychiatric
01800	interview with the linguistic behavior of paranoid patients.
01900		A  computer  simulation  of  paranoid  processes involves the
02000	construction and testing of a complex symbolic model. To fathom  such
02100	a  model  and  its functions, it is first necessary to understand the
02200	perspectives of symbol processing and computer  simulation.  I  shall
02300	try  to  present  some  background information sufficient to orient a
02400	reader unfamiliar with these perspectives.
02500		I  am  indebted  to  co-workers  who  collaborated with me in
02600	constructing and testing the model. Sylvia Weber Russell, a  graduate
02700	student in Department of Computer Science, Stanford university, wrote
02800	the original  version  of  the  program.   Franklin  Dennis  Hilf,  a
02900	psychiatrist  and  research  associate  in the Department of Computer
03000	Science, Stanford  University,  was  primarily  responsible  for  the
03100	validation   studies.   Helena   Kraemer,   research   associate   in
03200	biostatistics,  Department  of   Psychiatry,   Stanford   University,
03300	assisted  in  the  design  of the experiments and in carrying out the
03400	statistical methods used.
03600		Also  I  am  grateful  to  Bruce  Anderson,  Bruce  Buchanan,
03700	Franklin  Dennis  Hilf, Roger C.  Parkison, Charles J. Rieger III and
03800	Yorick Wilks for their comments  on  the  entire  manuscript  and  to
03900	Margaret  A.   Boden,  Horace Enea and Abraham Kaplan for suggestions
04000	regarding  specific  chapters. Because I made them,   I   bear   full
04100	responsibility for the errors.
04200		This research was supported by Grant PHS MH 06645-12 from the
04300	National  Institute  of  Mental  Health  and  by  (in  part) Research
04400	Scientist Award (No.1-K05-K14,433) from  the  National  Institute  of
04500	Mental Health.