Table Of ContentGenerative Social Science
Princeton Studies in Complexity
SimonA.Levin(PrincetonUniversity)
andStevenH.Strogatz(CornellUniversity),Editors
Lars-ErikCederman,EmergentActorsinWorldPolitics:
HowStatesandNationsDevelopandDissolve
RobertAxelrod,TheComplexityofCooperation:Agent-BasedModels
ofCompetitionandCollaboration
PeterS.Albin,BarriersandBoundstoRationality:EssaysonEconomic
ComplexityandDynamicsinInteractiveSystems.Editedandwithan
introductionbyDuncanK.Foley
DuncanJ.Watts,SmallWorlds:TheDynamicsofNetworksbetween
OrderandRandomness
ScottCamazine,Jean-LouisDeneubourg,NigelR.Franks,
JamesSneyd,GuyTheraulaz,EricBonabeau,
Self-OrganizationinBiologicalSystems
PeterTurchin,HistoricalDynamics:WhyStatesRiseandFall
AndreasWagner,RobustnessandEvolvabilityinLivingSystems
MarkNewman,Albert-LaszloBarabasi,andDuncanWatts,eds.,
TheStructureandDynamicsofNetworks
J.StephenLansing,PerfectOrder:RecognizingComplexityinBali
JoshuaM.Epstein,GenerativeSocialScience:StudiesinAgent-Based
ComputationalModeling
Generative
Social Science
STUDIES IN AGENT-BASED
COMPUTATIONAL MODELING
Joshua M. Epstein
PRINCETON UNIVERSITY PRESS
PRINCETON AND OXFORD
Copyright(cid:1)c 2006byPrincetonUniversityPress
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LibraryofCongressCataloging-in-PublicationData
Epstien,JoshuaM.,1951–
Generativesocialscience:studiesinagent-basedcomputational
modeling/JoshuaM.Epstein
p.cm.—(Princetonstudiesincomplexity)
Includesbibliographicalreferencesandindex.
ISBN-13:978-0-691-12547-3(cloth:alk.paper)
ISBN-10:0-691-12547-3(cloth:alk.paper)
1.Socialsciences—Computersimulation. 2.Socialsciences—
Mathematicalmodels. I.Title. II.Series.
H61.3.E672007
300.1’13—dc22 2006004238
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For Melissa, Matilda, and Joey
CONTENTS
Introduction xi
PreludetoChapter1:TheGenerativistManifesto 1
Chapter1:Agent-BasedComputationalModelsand
GenerativeSocialScience 4
JoshuaM.Epstein
PreludetoChapter2:ConfessionofaWanderingBark 47
Chapter2:RemarksontheFoundationsofAgent-Based
GenerativeSocialScience 50
JoshuaM.Epstein
PreludetoChapter3:Equilibrium,Explanation,and
Gauss’sTombstone 72
Chapter3:Non-ExplanatoryEquilibria:AnExtremelySimple
Gamewith(Mostly)UnattainableFixedPoints 75
JoshuaM.EpsteinandRossA.Hammond
AppendixtoChapter3:LargeEffectofaSubtleRuleChange 86
PreludetoChapters4–6:GeneratingCivilizations:The1050
ProjectandtheArtificialAnasazi
Model 88
Chapter4:UnderstandingAnasaziCultureChangethrough
Agent-BasedModeling 90
JeffreyS.Dean,GeorgeJ.Gumerman,
JoshuaM.Epstein,RobertL.Axtell,
AlanC.Swedlund,MilesT.Parker,
andStephenMcCarroll
Chapter5:PopulationGrowthandCollapseina
MultiagentModeloftheKayentaAnasazi
inLongHouseValley 117
RobertL.Axtell,JoshuaM.Epstein,
JeffreyS.Dean,GeorgeJ.Gumerman,
AlanC.Swedlund,JasonHarburger,
ShubhaChakravarty,RossHammond,JonParker,
andMilesParker
viii CONTENTS
Chapter6:TheEvolutionofSocialBehaviorinthePrehistoric
AmericanSouthwest 130
GeorgeJ.Gumerman,AlanC.Swedlund,
JeffreyS.Dean,andJoshuaM.Epstein
PreludetoChapter7:GeneratingPatternsintheTimingof
Retirement 144
Chapter7:CoordinationinTransientSocialNetworks:An
Agent-BasedComputationalModeloftheTiming
ofRetirement 146
RobertL.AxtellandJoshuaM.Epstein
PreludetoChapter8:GeneratingClasseswithoutConquest 175
Chapter8:TheEmergenceofClassesinaMulti-Agent
BargainingModel 177
RobertL.Axtell,JoshuaM.Epstein,and
H.PeytonYoung
PreludetoChapter9:GeneratingZonesofCooperationin
thePrisoner’sDilemmaGame 196
Chapter9:ZonesofCooperationinDemographicPrisoner’s
Dilemma 199
JoshuaM.Epstein
AppendixtoChapter9:GeneratingNormMapsinthe
DemographicCoordinationGame 222
PreludetoChapter10:GeneratingThoughtlessConformity
toNorms 225
Chapter10:LearningtobeThoughtless:SocialNormsand
IndividualComputation 228
JoshuaM.Epstein
PreludetoChapter11:GeneratingPatternsofSpontaneous
CivilViolence 245
Chapter11:ModelingCivilViolence:AnAgent-Based
ComputationalApproach 247
JoshuaM.Epstein
PreludetoChapter12:GeneratingEpidemicDynamics 271
Chapter12:TowardaContainmentStrategyforSmallpox
Bioterror:AnIndividual-BasedComputational
Approach 277
JoshuaM.Epstein,DerekA.T.Cummings,
ShubhaChakravarty,RameshM.Singha,
andDonaldS.Burke
CONTENTS ix
PreludetoChapter13:GeneratingOptimalOrganizations 307
Chapter13:GrowingAdaptiveOrganizations:An
Agent-BasedComputationalApproach 309
JoshuaM.Epstein
Coda 345
Index 349
Description:Agent-based computational modeling is changing the face of social science. In Generative Social Science, Joshua Epstein argues that this powerful, novel technique permits the social sciences to meet a fundamentally new standard of explanation, in which one "grows" the phenomenon of interest in an ar