email page print pageAll Topic Reviews
A New Understanding of Mental Disorders A Theory of Feelings Addictions Memory and the Self"Intimate" Violence against Women1001 Solution-Focused Questions101 Healing Stories101 Things I Wish I'd Known When I Started Using Hypnosis50 Great Myths of Popular Psychology50 Reasons People Give for Believing in a God8 Keys to Body Brain BalanceA Brief History of Modern PsychologyA Conceptual History of PsychologyA Conceptual History of Psychology: Exploring the Tangled Web A Cooperative SpeciesA Guide to Teaching Introductory PsychologyA History of Modern Experimental PsychologyA History of Psychology in AutobiographyA History of Social PsychologyA History of the BrainA History of the MindA Hole in the HeadA Matter of SecurityA Mind of Its OwnA Natural History of Human ThinkingA Place for ConsciousnessA Short Introduction to Promoting Resilience in ChildrenA Social History of PsychologyA Stroll With William JamesA System Architecture Approach to the BrainA Theory of FreedomA Very Bad WizardAbductedAbout FacesAccounts of InnocenceAction, Emotion and WillAdapting MindsAddiction and Self-ControlADHD & MeADHD in AdultsAdieu to GodAdolescence and Body ImageAdult Bipolar DisordersAdvances in Culture and PsychologyAdvances in Identity Theory and ResearchAffect Regulation, Mentalization, and the Development of SelfAffective MappingAgainst EmpathyAgainst HappinessAges and StagesAll Joy and No FunAll Out!All We Have to FearAlterations of ConsciousnessAmerican Psychiatric Publishing Textbook of Neuropsychiatry and Clinical NeurosciencesAn Argument for MindAncient Bodies, Modern LivesAnd BreatheAnimal MadnessAnimal Tool BehaviorAnimals in TranslationAnomalous CognitionAping MankindArtificial ConsciousnessAspects of PsychologismAsperger Syndrome and Your ChildAsperger Syndrome, Adolescence, and IdentityAssessment and Treatment of Childhood Problems, Second EditionAssisted Suicide and the Right to DieAttachedAttention is Cognitive UnisonAutism and the Myth of the Person AloneAutopsy of a Suicidal MindBecoming an Effective PsychotherapistBehavingBehavioral Genetics in the Postgenomic EraBeing No OneBelievingBetween Two WorldsBeyond AppearanceBeyond BlueBeyond BullyingBeyond MadnessBeyond MelancholyBeyond the BrainBeyond the DSM StoryBig DreamsBiofeedback for the BrainBipolar ChildrenBipolar DisorderBipolar KidsBlackwell Handbook of Childhood Cognitive DevelopmentBlind SpotsBlindsight & The Nature of ConsciousnessBlubberlandBlushBodiesBody ConsciousnessBody Image, Eating Disorders, and Obesity in YouthBody SenseBody WorkBorderline Personality DisorderBorderline Personality Disorder and the Conversational ModelBorn DigitalBorn to Be GoodBorn Together - Reared ApartBounceBoundaries in Human RelationshipsBounded RationalityBowen Theory's SecretsBozo SapiensBrain and CultureBrain and the GazeBrain Arousal and Information TheoryBrain BugsBrain Change TherapyBrain Circuitry and Signaling in PsychiatryBrain FictionBrain, Mind, and Human Behavior in Contemporary Cognitive ScienceBrain-Based Therapy with AdultsBrain-WiseBrainstormBrainstormingBraintrustBrainwashingBrandedBreaking Murphy's LawBright-SidedBuddha's BrainBullying and TeasingBuyologyCan't You Hear Them?CaptureCare of the PsycheCartesian LinguisticsCartographies of the MindCerebrum 2007Cerebrum 2010Cerebrum 2015Cerebrum Anthology 2013Changing the SubjectCharacter Strengths and VirtuesCheating LessonsChild and Adolescent Psychological DisordersChildren’s Dreaming and the Development of Consciousness Chomsky NotebookClinical Psychiatry in Imperial GermanyClinical Psychology in Practice ClosureCognition and PerceptionCognition and the BrainCognitive BiologyCognitive DissonanceCognitive FictionsCognitive Mechanisms of Belief ChangeCognitive PragmaticsCognitive ScienceCognitive ScienceCognitive Systems and the Extended MindCognitive Therapy of Anxiety DisordersCognitive Unconscious and Human RationalityCold-Blooded KindnessComing of Age in Second LifeCommunication Issues In Autism And Asperger SyndromeCompassion and Healing in Medicine and SocietyComplementary and Alternative Therapies ResearchComprehending ColumbineConfessions of a SociopathConquering Shame and CodependencyConsciousnessConsciousnessConsciousnessConsciousnessConsciousnessConsciousness ConsciousnessConsciousness and Its Place in NatureConsciousness and LanguageConsciousness and Mental LifeConsciousness and MindConsciousness and the NovelConsciousness and the Social BrainConsciousness EmergingConsciousness RecoveredConsciousness RevisitedConsciousness, Self-Consciousness, and the Science of Being HumanConstructing PainConsumer NeuroscienceContemporary Debates in Cognitive ScienceConversations on ConsciousnessConviction of the InnocentCooperation and Its EvolutionCreating a Life of Meaning and CompassionCredit and BlameCritical New Perspectives on Attention Deficit/Hyperactivity DisorderCritical PsychologyCritical Thinking About PsychologyCross-Cultural PsychologyCrowdsourcingCrueltyCultural Assessment in Clinical PsychiatryCuriousDamasio's Error and Descartes' TruthDangerous and Severe Personality DisorderDaniel DennettDaughters of MadnessDeafness In MindDeath and ConsciousnessDeath of a ParentDecomposing the WillDeep Brain StimulationDeep ChinaDefining DifferenceDefining Psychopathology in the 21st CenturyDelusion and Self-DeceptionDelusions of GenderDennett and Ricoeur on the Narrative SelfDeparting from DevianceDescartes' BabyDescartes's Changing MindDescribing Inner Experience?Desert Islands and Other Texts (1953-1974)Destructive EmotionsDevelopment of Geocentric Spatial Language and CognitionDevelopment of PsychopathologyDialogues on DifferenceDid My Neurons Make Me Do It?Digital HemlockDirty MindsDisgust and Its DisordersDisorders of VolitionDo Apes Read Minds?Do Fish Feel Pain?Does Consciousness Cause Behavior?Doing without ConceptsDrunk Tank PinkEducating People to Be Emotionally IntelligentEffective IntentionsEffective Writing in PsychologyEffortless AttentionEmbodied Minds in ActionEmbracing MindEmbracing UncertaintyEMDR Therapy and Somatic PsychologyEmotion and ConsciousnessEmotion ExperienceEmotion RegulationEmotion, Evolution, And RationalityEmotional IntelligenceEmotionally InvolvedEmotionsEmotionsEmotions and LifeEmotions in Humans and ArtifactsEmotions RevealedEmotions, Aggression, and Morality in ChildrenEmotions, Stress, and HealthEmpathyEnjoymentErotic MoralityEscape Your Own PrisonEssays in Social NeuroscienceEssential Sources in the Scientific Study of ConsciousnessEthical Issues in Forensic Mental Health ResearchEthically Challenged ProfessionsEveryday Mind ReadingEvidence for PsiEvidence-Based Mental Health PracticeEvil MenEvolution and Human BehaviorEvolution and LearningEvolution, Games, and GodEvolution, Gender, and RapeEvolutionary Psychology and ViolenceEvolutionary Psychology as Maladapted PsychologyExacting BeautyExperiences of DepressionExperimenterExplaining the BrainExplaining the BrainExplorations in Neuroscience, Psychology and ReligionExploring TranssexualismExpression and the InnerExtending Self-Esteem ResearchExtraordinary BeliefsFact and Value in EmotionFaking ItFatigue as a Window to the BrainFavorite Activities for the Teaching of PsychologyFeeling GoodFeeling Pain and Being in PainFeelings and EmotionsFinding Meaning, Facing FearsFitting In Is OverratedFive Constraints on Predicting BehaviorFlourishingFlow: The Psychology of Optimal ExperienceFolk Psychological NarrativesFooling HoudiniForever YoungFormulation in Psychology and PsychotherapyFoucault, Psychology and the Analytics of PowerFoundational Issues in Human Brain MappingFoundations of Psychological ThoughtFree Will as an Open Scientific ProblemFreedom And NeurobiologyFreedom EvolvesFrom Axons to IdentityFrom Madness to Mental HealthFrom Neurons to Self-ConsciousnessFrom Passions to EmotionsFrom Philosophy to PsychotherapyFrom Symptom to SynapseFrontiers of ConsciousnessGay, Straight, and the Reason WhyGenerosityGenes, Environment, and PsychopathologyGenetic Nature/CultureGeniusGetting Under the SkinGlued to GamesGoing SaneGot Parts?Group GeniusGrowing Up GirlGuilt, Shame, and AnxietyGut ReactionsHallucinationHandbook New Sexuality StudiesHandbook of Closeness and IntimacyHandbook of Critical PsychologyHandbook of Emotion RegulationHandbook of EmotionsHandbook of Personality DisordersHandbook of PsychopathyHandbook of Self and IdentityHandbook of Self and IdentityHandbook of Spatial CognitionHappinessHappinessHappinessHappinessHappiness at WorkHappiness Is.Happy at LastHard to GetHardwired BehaviorHatredHealing the SplitHidden ResourcesHope and DespairHot ThoughtHot ThoughtHouse and PsychologyHow Animals Affect UsHow Animals GrieveHow Can the Human Mind Occur in the Physical Universe?How Doctors ThinkHow Enlightenment Changes Your BrainHow Families Still MatterHow History Made the MindHow Infants Know MindsHow Many Friends Does One Person Need?How People ChangeHow Professors ThinkHow The Body Shapes The MindHow the Body Shapes the Way We ThinkHow the Mind Explains BehaviorHow the Mind Uses the BrainHow to Change Someone You LoveHow We ReasonHow We RememberHughes' Outline of Modern PsychiatryHumanHuman BondingHuman Reasoning and Cognitive ScienceHume’s Moral Philosophy and Contemporary PsychologyHypnotismHysteriaiBrainIdentifying Hyperactive ChildrenIdentifying the MindiDisorderImagination and the Meaningful BrainImitation and the Social MindImpulse Control DisordersImpulsivityIn an Unspoken VoiceIn Defense of SentimentalityIn DoubtIn Search of HappinessIn the Wake of 9/11Individual and Collective Memory ConsolidationInner Experience and NeuroscienceInner PresenceInside the American CoupleIntegrated Behavioral Health CareIntegrating Evolution and DevelopmentIntegrating Psychotherapy and PharmacotherapyIntegrity and the Fragile SelfIntellectual DisabilityIntelligenceIntelligence, Destiny, and EducationIntentions and IntentionalityInterdependent MindsInterpreting MindsInto the Minds of MadmenIntoxicating MindsIntrospection VindicatedIntuitionInventing PersonalityInvestigating the Psychological WorldIrrationalityIs There Anything Good About Men?Issues for Families, Schools and CommunitiesJane Sexes It UpJoint AttentionJoint AttentionJudgment and Decision MakingJust a DogJust BabiesJuvenile-Onset SchizophreniaKarl JaspersKey Thinkers in PsychologyKidding OurselvesKids of CharacterKilling MonstersKnowing EmotionsLack of CharacterLanguage OriginsLanguage, Consciousness, CultureLanguage, Vision, and MusicLaw, Mind and BrainLess Than HumanLet Kids Be KidsLet's Talk About DeathLiving NarrativeLiving with Mild Cognitive ImpairmentLonelinessLooking for SpinozaLossLOT 2Love at Goon ParkMachine ConsciousnessMacrocognitionMade for Each OtherMadnessMadness and Modernism: Insanity in the light of modern art, literature, and thought Making a Good Brain GreatMaking Habits, Breaking HabitsMaking Minds and MadnessMaking Up the MindMale SexualityMan and WomanMan's Search for MeaningMan, Beast, and ZombieManic MindsManlinessMapping the MindMarking the MindMarvelous Learning AnimalMasculinity Studies and Feminist TheoryMeaningMeaning, Mortality, and ChoiceMedical MusesMeditating SelflesslyMeetings with a Remarkable ManMemoryMemory and DreamsMemory and EmotionMemory And UnderstandingMental BiologyMental IllnessMental Time TravelMetacognitionMetacognition and Theory of MindMethods in MindMindMindMind and BrainMind and ConsciousnessMind GamesMind Games:Mind in LifeMind TimeMind to MindMind, Brain and the Elusive SoulMindful AngerMindfulnessMindfulnessMindfulness and AcceptanceMindfulness-Based Treatment Approaches: Clinician's Guide to Evidence Base and ApplicationsMinding AnimalsMinding MindsMindreadersMindreading AnimalsMinds, Brains, and LawMindsightMindworldsMirrors in the BrainMistakes Were Made (But Not by Me)Models of MadnessMoodMoral Development and RealityMoral MindsMoral Psychology, Volume 1Moral Psychology, Volume 2Moral Psychology, Volume 3Mothers and OthersMotivation and Cognitive ControlMotivational Interviewing: Preparing People For ChangeMovies and the MindMulticulturalism and the Therapeutic ProcessMultiplicityMuses, Madmen, and ProphetsMy Family AlbumMyths about SuicideNarrative IdentitiesNarrative PsychiatryNarratives in PsychiatryNaturalizing Intention in ActionNature and NarrativeNature Via NurtureNeither Bad nor MadNerveNeurobiology and the Development of Human MoralityNeurochemistry of ConsciousnessNeurodiversityNeuroethicsNeuroLogicNeurological Foundations of Cognitive Neuroscience Neuroscience and PhilosophyNo Child Left DifferentNo Two AlikeNot By Genes AloneNot Much Just Chillin'Not So Abnormal PsychologyNurturing the Older Brain and MindOn AnxietyOn Being an Introvert or Highly Sensitive PersonOn Being HumanOn Being MovedOn Deep History and the BrainOn DesireOn KillingOn Nature and LanguageOn PaedophiliaOn PersonalityOn the Frontier of AdulthoodOn the Origins of Cognitive ScienceOn The Stigma Of Mental IllnessOnflowOpen MindsOpening Skinner's BoxOrigin of MindOrigins of PsychopathologyOther MindsOut of Our HeadsOut of the WoodsOvercoming Depersonalization DisorderPanpsychism and the Religious AttitudePanpsychism in the WestParenting and the Child's WorldPassionate EnginesPathologies of the WestPatient-Based Approaches to Cognitive NeurosciencePediatric PsychopharmacologyPeople Types and Tiger StripesPerception & CognitionPerception beyond InferencePerception, Hallucination, and IllusionPersonal Development and Clinical PsychologyPerspectives on ImitationPhantoms in the BrainPhenomenal Concepts and Phenomenal KnowledgePhenomenology and Philosophy of MindPhilosophical Foundations of NeurosciencePhilosophical MidwiferyPhilosophy and HappinessPhilosophy of PsychologyPhilosophy, Neuroscience and ConsciousnessPhrenologyPhysical RealizationPhysics in MindPieces of LightPlaying with FirePositive PsychologyPositive PsychologyPostcards from the Brain MuseumPostpsychiatryPosttraumatic Stress DisorderPoverty and Brain Development During ChildhoodPractical Ethics for PsychologistsPractical Management of Personality DisorderPractical Management of Personality DisorderPredicative MindsPredictably IrrationalPreference, Belief, and SimilarityPrenatal Testosterone in MindPrivileged AccessProcess-Based CBTProcrastinationPromoting Healthy AttachmentsProust Was a NeuroscientistPsychiatric SlaveryPsychiatry as Cognitive NeurosciencePsychiatry, Psychoanalysis, And The New Biology Of MindPsychological AgencyPsychological Concepts and Biological PsychiatryPsychological Dimensions of the SelfPsychologists Defying the CrowdPsychologyPsychologyPsychology and Consumer CulturePsychology and LawPsychology and the Question of AgencyPsychology for ScreenwritersPsychology of Women: A Handbook of Issues and TheoriesPsychology's GhostsPsychology's Interpretive TurnPsychology's TerritoriesPsychopathologyPsychopathyPsychosis and EmotionPsychotherapy, American Culture, and Social PolicyPutnam CampPutting a Name to ItQuantum Memory PowerQuietRadical DistortionRadical Embodied Cognitive ScienceRadical ExternalismRadical GraceRapeRe-Visioning PsychiatryReal MaterialismReality CheckReconstructing Reason and RepresentationReconstructing the Cognitive WorldRecovery in Mental IllnessRecreative MindsRedirectReducing Adolescent RiskRegulating EmotionsRelational BeingRelational Mental HealthRelational Suicide AssessmentReliability in Cognitive NeuroscienceRemembering HomeRemembering Our ChildhoodResearch Advances in Genetics and GenomicsResearching Children's ExperienceResilience in ChildrenRestoring ResilienceRethinking ADHDRethinking Learning DisabilitiesRethinking Middle YearsRethinking the Western Understanding of the SelfRevolution in PsychologyRoadmap to ResilienceRomance and Sex in Adolescence and Emerging AdulthoodSchadenfreudeSchizophrenia RevealedSchizophrenia, Culture, and SubjectivityScience and Pseudoscience in Clinical PsychologyScience and Pseudoscience in Clinical PsychologySecond NatureSecond NatureSecond That EmotionSecond-order Change in PsychotherapySecrets of the MindSee What I'm SayingSee What I'm SayingSeeing and VisualizingSeeing RedSelf and SocietySelf Comes to MindSelf Control in Society, Mind, and BrainSelf-Awareness Deficits in Psychiatric PatientsSelf-CompassionSelf-Consciousness and 'Split' BrainsSelf-RegulationSelf-Representational Approaches to ConsciousnessSelfless InsightSelvesSerial KillersSex at DawnSex on the BrainSex, Time and PowerSexual Coercion in Primates and HumansSexual DisordersSexual FluiditySexual ReckoningsSexualized BrainsShame and GuiltShatteredSimulating MindsSisyphus's BoulderSleepyheadSNAPSocial NeuroscienceSocial NeuroscienceSocial NeuroscienceSocial Psychology and DiscourseSome We Love, Some We Hate, Some We EatSoul DustSparkSpiral of EntrapmentSplendors and Miseries of the BrainSports Hypnosis in PracticeStanding at Water's EdgeStich and His CriticsStillpowerStop OverreactingStructure and Agency in Everyday LifeStructures of AgencyStuffStumbling on HappinessSubjectivity and SelfhoodSubstance Abuse and EmotionSuicidalSupersizing the MindSweet DreamsSynaptic SelfTales from Both Sides of the BrainTalking Oneself SoberTalking to BabiesTaming the Troublesome ChildTargeting AutismTeaching Problems and the Problems of TeachingTeleological RealismTen Years of Viewing from WithinTestosterone RexThat's DisgustingThe 5 Elements of Effective ThinkingThe Accidental MindThe Age of EmpathyThe Altruism EquationThe Altruistic BrainThe American Psychiatric Publishing Textbook of Clinical PsychiatryThe Anatomy of BiasThe Anxious BrainThe Archaeology of MindThe Art and Science of MindfulnessThe Art InstinctThe Art of HypnosisThe Asymmetrical BrainThe Bifurcation of the SelfThe Big Book of ConceptsThe Big DisconnectThe Birth of IntersubjectivityThe Birth of the MindThe Blackwell Handbook of Organizational Learning and Knowledge ManagementThe Blank SlateThe Body Has a Mind of Its OwnThe Bounds of CognitionThe Boy Who Was Raised as a DogThe BrainThe BrainThe Brain and the Meaning of LifeThe Brain SupremacyThe Brain That Changes ItselfThe Brain's Way of HealingThe Brain: Big Bangs, Behaviors, and BeliefsThe Cambridge Handbook of Cognitive ScienceThe Cambridge Handbook of Situated CognitionThe Character of ConsciousnessThe Chemistry Between UsThe Choice EffectThe Clinical Science of Suicide PreventionThe Cognitive Approach to Conscious MachinesThe Cognitive Behavioral Workbook for Anxiety: A Step-By-Step ProgramThe Cognitive NeurosciencesThe Cognitive-Emotional BrainThe College Fear FactorThe Commercialization of Intimate LifeThe Compass of PleasureThe Compassionate ConnectionThe Concepts of ConsciousnessThe Conscious BrainThe Conscious SelfThe Consuming InstinctThe Creating BrainThe Creative BrainThe Crucible of ConsciousnessThe Crucible of ExperienceThe Cure WithinThe Dao of NeuroscienceThe Developing MindThe Developing MindThe Development of PsychopathologyThe Disappearance of the Social in American Social PsychologyThe Dissolution of MindThe Duty to ProtectThe Educated ParentThe Ego TunnelThe Elephant in the RoomThe Embodied Mind: Cognitive Science and Human ExperienceThe Emotional Foundations of PersonalityThe Emotional Journey of the Alzheimer's FamilyThe Encultured BrainThe Encyclopedia of StupidityThe Enduring Self in People with Alzheimer'sThe Epidemiology of SchizophreniaThe Essential DifferenceThe Ethical BrainThe Evolution of BeautyThe Evolution of ChildhoodThe Evolution of CooperationThe Evolution of LanguageThe Evolution of MindThe Evolving BrainThe Executive BrainThe Faces of TerrorismThe Feeling BrainThe Feeling of What HappensThe First IdeaThe Folly of FoolsThe Folly of FoolsThe Folly of FoolsThe Foundations of Cognitive ArchaeologyThe Fundamentalist MindsetThe GapThe Gender TrapThe Geography of BlissThe Gift of ShynessThe Good LifeThe Good LifeThe Happiness HypothesisThe Happiness of PursuitThe Health Psychology HandbookThe Healthy Aging BrainThe Heart of TraumaThe High Price of MaterialismThe History of PsychologyThe Human FaceThe Human SparkThe Hypomanic EdgeThe Imagery DebateThe Immeasurable MindThe Imprinted BrainThe Incredible Shrinking MindThe Innate MindThe Innate MindThe Integrated SelfThe Intentional BrainThe Language of ThoughtThe Languages of the BrainThe Lexicon of Adlerian PsychologyThe Lie DetectorsThe Lives of the BrainThe Lonely AmericanThe Lust for BloodThe Madness of WomenThe Male BrainThe Man Who Lost His LanguageThe Man Who Shocked the WorldThe Man Who Tasted ShapesThe Man Who Wasn't ThereThe Matter of the MindThe Mature MindThe Mean Girl MotiveThe Meaning of EvilThe Meaning of OthersThe Meaning of the BodyThe Measure of MadnessThe Measure of MindThe Medicalization of Everyday LifeThe Mind and the BrainThe Mind in ContextThe Mind of the ChildThe Mind of the HorseThe Mind's EyeThe Mind, the Body and the WorldThe Mind-Gut ConnectionThe Mindful BrainThe Misleading MindThe Moral MindThe Most Dangerous AnimalThe Most Human HumanThe Mother FactorThe Myth of ChoiceThe Myth of Depression as DiseaseThe Myth of Mirror NeuronsThe Myth of Self HelpThe Myth of Self-EsteemThe Myth of the Spoiled ChildThe Nature of the SelfThe Necessity Of MadnessThe Neuro RevolutionThe Neuron and the MindThe Neuropsychology of the UnconsciousThe Neuroscience of Human RelationshipsThe Neuroscience of PsychotherapyThe Neuroscience of Psychotherapy: Healing the Social BrainThe New BrainThe New Science of DreamingThe New Science of the MindThe New UnconsciousThe Normal PersonalityThe Origins of FairnessThe Overflowing BrainThe Oxford Companion to the MindThe Oxford Handbook of Philosophy of MindThe Paradoxical PrimateThe Perfectionist's HandbookThe Peripheral MindThe Phenomenology ReaderThe Philosopher's Secret FireThe Philosophical BabyThe Political MindThe Politics of HappinessThe Positive Side of Negative EmotionsThe Postnational SelfThe Postpartum EffectThe Power of PlayThe Praeger Handbook of TranssexualityThe Present Moment in Psychotherapy and Everyday LifeThe Primate MindThe Prism of GrammarThe Psychobiology of Trauma and Resilience Across the LifespanThe Psychological Construction of EmotionThe Psychology of Good and EvilThe Psychology of Good and EvilThe Psychology of HappinessThe Psychology of LifestyleThe Psychology of Religious FundamentalismThe Psychology of Science and the Origins of the Scientific MindThe Psychology of Science and the Origins of the Scientific MindThe Psychology of SpiritualityThe Psychology of StereotypingThe Psychology of SuperheroesThe Psychophysiology of Self-AwarenessThe Pursuit of PerfectThe Quest for Mental HealthThe Rational ImaginationThe Ravenous BrainThe Reasons of LoveThe Righteous MindThe Routledge Companion to Philosophy of PsychologyThe Routledge Companion to Philosophy of PsychologyThe Routledge Handbook of ConsciousnessThe Science of EvilThe Science of Intimate RelationshipsThe Science of Shame and its Treatment The Second SelfThe Secret History of EmotionThe Secret Lives of BoysThe Self and Its EmotionsThe Self-Sabotage CycleThe Sense of SelfThe Sensitive SelfThe Shape of ThoughtThe Social AnimalThe Social Nature of Mental IllnessThe Social Neuroscience of EmpathyThe Social Psychology of Good and EvilThe Social Psychology of MoralityThe Social Psychology of MoralityThe Story of Intellectual DisabilityThe Structure of ThinkingThe Survivors ClubThe Talking ApeThe Teenage BrainThe Tell-Tale BrainThe Temperamental ThreadThe Tender CutThe Tending InstinctThe Time ParadoxThe Trauma MythThe Trauma of Psychological TortureThe Trauma of Psychological TortureThe Trouble with IllnessThe True PathThe Truth About GriefThe Turing TestThe Uncertain SciencesThe Undoing ProjectThe Unhappy ChildThe Upside of IrrationalityThe War for Children's MindsThe Well-Tuned BrainThe Wild Girl, Natural Man, and the MonsterThe Winner's BrainThe Wisdom in FeelingThe Woman RacketThe World in My Mind, My Mind in the WorldThe Wow ClimaxThe Yipping TigerThemes, Issues and Debates in PsychologyTheoretical Issues in Psychology: An IntroductionTheory of AddictionTheory of MindThings and PlacesThink CatThink Confident, Be ConfidentThinking about AddictionThinking and SeeingThis Emotional Life: In Search of Ourselves...and HappinessThought and LanguageThought in a Hostile WorldTo Have and To Hurt:Toward an Evolutionary Biology of LanguageToward Replacement Parts for the BrainTrauma and Human ExistenceTrauma, Tragedy, TherapyTreating Attachment DisordersTreating Self-InjuryTreating Self-Injury: A Practical GuideTrue to Our FeelingsTrusting the Subject?Understanding and Treating Borderline Personality DisorderUnderstanding ConsciousnessUnderstanding ParanoiaUnderstanding PeopleUnderstanding TerrorismUnderstanding the BrainUndoing Perpetual StressUnlock the Genius WithinUnsettled MindsUnstrange MindsUnthinkingUnthoughtUs and ThemViolent PartnersVirtue, Vice, and PersonalityVision and MindVisual AgnosiaWarrior's DishonourWe Who Are DarkWednesday Is Indigo BlueWelcome to Your BrainWhat Do Women Want?What Dying People WantWhat Have We DoneWhat Intelligence Tests MissWhat Is an Emotion: Classic and Contemporary ReadingsWhat Is Emotion?What is Intelligence?What Is Mental Illness?What Is Thought?What Makes Your Brain Happy and Why You Should Do the Opposite What the Best College Students DoWhat the Dog SawWhat We Know about Emotional IntelligenceWhat We Say MattersWhat's Wrong With Morality?When Boys Become BoysWhen Perfect Isn't Good EnoughWhen the Impossible HappensWhen Walls Become DoorwaysWho's Been Sleeping in Your HeadWho's in Charge?Why Humans Like to CryWhy Love MattersWhy Lyrics LastWhy People CooperateWhy People Die by SuicideWhy Sex Matters: A Darwinian Look at Human BehaviorWhy Smart People Can Be So StupidWhy the Mind is Not a ComputerWhy Us?Why We LieWhy We LoveWhy We SleepWider than the SkyWilliam James at the BoundariesWilling, Wanting, WaitingWittgenstein And PsychologyWomen and Child Sexual AbuseWorking MindsYoga and PsychologyYou Are What You RememberYoung Minds in Social WorldsYour Brain on CubsYour Brain on FoodYour Brain on Food: How Chemicals Control Your Thoughts and Feelings,Your Brain on YogaYour Child in the BalanceZombies and Consciousness
Philip Johnson-Laird's How We Reason is a major contribution to the contemporary debate on the nature of reasoning. The author, who is widely known for his pioneering work in the experimental psychology of reasoning, in this book presents the theoretical framework of a life-long research project, which he labels a "model theory of mind". The book is also an application of the model theory to different areas of human reasoning: empirical beliefs, emotions, everyday reasoning, mental diseases, historical cases (such as the disaster of Chernobyl, the creativity of the Wright brothers in the invention of the first airplane, the notorious breaking of the Enigma code). In this review I will discuss the main point of Johnson-Laird's model theory, the idea that reasoning is essentially a process of possibilities.
In a nutshell, the theory says that reasoning involves the ability of thinking possible states of affair and what is common to them (chapter 3, see p. 39 in particular). More exactly, when we reason we represent the set of possible state of affairs of how the world could be. We do so by abstracting from the details of concrete pictures to form iconic representations, i.e. mental models whose architecture contains the common features of the different possible ways things can be arranged and combined. Johnson-Laird suggests us to think of these mental models as those an architect has in mind when he imagines the design of a future building.
Though, reasoning is not only about singular beliefs or propositions, rather it is primarily a dynamic process paradigmatically associated with the capacity of making inferences. Reasoning is "a set of processes that construct and evaluate implications among sets of propositions" (p.3). Inferences come in different guises, mainly - but not exclusively -- as deductions and inductions. Although the standard distinction between these two kinds of inferences is drawn in terms of generality and particularity (deductions are inferences from the general to the particular, inductions do the reverse), Johnson-Laird rejects this characterization to focus on a different aspect. The crucial distinction between deduction and induction is given by their effect on information: "The more possibilities that a proposition eliminates, the more information it contains" (p. 4). If we analyze the deductive process, we realize that the information that we draw in the conclusions already contained (though implicitly) in the premise. For instance, let's say that "a patient has chicken pox or she has measles" and assume in addition that "she doesn't have chicken pox". Therefore, she has measles. Here - the author argues -- "the conclusion adds no information to the premises, but makes explicit a proposition that holds in the one possibility consistent with them". (ibid.; see also chapter 10)
Inductions do the reserve work, afs their conclusions convey more information than those contained in the premises. If I see the well-known 99 white swans in a pond, I will infer that the next one will also be white; but this information goes beyond what was contained in the premise, which after all states that 99 swans swim in the pond. According to Johnson-Laird, inductions "rule out possibilities compatible with their premises", therefore they are ampliative of the information already in hand (ibid.; see also chapter 12). This way of characterizing the distinction between deductive and inductive inferences is not new, but the crucial focus here is not on the ampliative character of inductive knowledge. Rather, the attention is on the mental endowment that allows knowledge to become ampliative, that is in the the ability of reasoning in terms of possible outcomes. Clearly, an inference that does not exclude any of the possibilities given in the premise will restate all or part of the information already there; while an inference that goes beyond the information given in the premises, will exclude one of them (when I say that the next swan will be white, I'm excluding the possibility it could be black).
Rational persons are good reasoners, as they master the combination of all possibilities involved in inferences to hold valid conclusions. This is a difficult task, and often we merely think of being rational, while we are exposed to plain mistakes that strike us only when we become aware of them. The difficulty is inherent in the process of abstracting from the details to retain the common possibilities, since we often omit some of them. A good deal of the book is dedicated to explain how this can happen. At first, Johnson-Laird clears out the field from two competing theories: first, he rejects the thesis that we do not reason at all, but just react to problem-solving situations by giving responses predetermined by our phylogenetic endowments. Second, he criticizes at length the idea that these mistakes are a matter of logical failures. In fact, we cannot identify rational capacities solely with logical competence. Not only reasoners can be rational without any previous logical expertise, but the occurrence of systematic errors in reasoning is also common among logical experts.
Johnson-Laird proposes to concentrate rather on the ability of grasping the force of counterexamples, whose role can be fully appreciated only within the model theory of mind (chapter 16).
Take, for instance, the well-known selection task experiment:
"We have to select evidence to find out whether a general claim about four cards is true or false:
If a card has a 'A' on one side then it has a '2' on this other side.
The four cards are laid out in front of us: A, B, 2, and 3, and we know that each of them has a letter on one side and a number on the other side. Given this task, we tend to select A card and perhaps the 2 card. We fail to see the relevance of the 3 card. But, if this card has a A on its other side, the general claim is false… To anyone who has studied logic, the error of omission in the selection task is puzzling". (pp. 14-15).
The author argues that the mistake is not due to the lack of formal-logical competence, because it suffices to change the content of the experiment leaving the structure intact to notice striking effects on the performance of the subjects involved (p. 15). This does not mean that logic does not have any role in reasoning: we can and should reason out of logic when we can, and we can learn from logic. But, logic lacks the constitutive role in reasoning that logicians and philosophers often attribute to it. Logic cannot be the foundation of a psychology of reasoning.
However, if we lack logic as a constituent of a psychological theory of reasoning, what shall this constituent be? We have remarked above that the model theory of reasoning conceives of models as possibilities and combinations of possibilities. The answer is based on this crucial idea.
To explain this, Johnson-Laird discusses several examples. For brevity, I will concentrate only on cases of deductive conclusions. Here is one:
If the patient has pimple-shaped spots, then she has chicken pox
The patient has pimple-shaped spots.
When we understand the first premise, we realize that is compatible with at least two possibilities. One possibility is that the patient has pimple-shaped spots and chicken pox, and the other possibility is that the patient doesn't have pimple-shaped spots. But, we also grasp that the second premise rules out this latter possibility. Only the first possibility remains, and so it follows that the patient has chicken pox…..We have made a deduction not using the logical form of the premises, but using their contents to imagine possibilities (p. 16; emphasis added).
The crucial aspect of example is that the possibilities that we envisage are mental models that represent possible ways things can be. The best way to picture the content of a mental model about a possible state of affairs is by using Venn diagrams (see chapter 20):
Let 'p' and 'q' stand respectively for 'the patient has pimpled-shaped spots', and 'the patient has chicken pox'. The red area represents the possibilities in which the conditional is true: either the the patient has the spots and she has chicken pox (the intersection in the middle), or just she has chicken pox (the remaining red part). The white area stands for the case the conditional is false (the case when the consequent is false). If we add the second premise, which states that the antecedent is true in this particular inference, we obtain the following diagram:
Here we represent the conclusion of the inference: given that 'p' obtains, 'q' follows. By looking at the Venn's diagram we have an intuitive iconic representation that expresses better than the truth-tables what are the possibilities involved and which of them are excluded as we add more premises. Of course, the more possibilities reasoners have to deal with, the more likely is for them to make mistakes. If we have embedded conditionals (say, conditionals that contain under conditionals) the circles representing the possibilities would grow exponentially, and the common intersections would became smaller. However, this simple diagrammatic representation already highlights two difficulties that experiments have found common in subjects.
First, if people overlook one or more possibilities, their conclusions will correspond to just some of the possibilities compatible with the premises. In our case, people tend to hold the conditional true only in the case where both p and q are true, that is to identify the central intersection in the figure as the only case in which the conditional is true.
Second, notice that the material conditional "if p then q" is equivalent to the disjunction "not-p or q" (the truth-table is identical). When we consider the two possibilities in a disjunction, we find prima facie difficult to grasp what it means. For one thing, the disjunction can be either inclusive or exclusive. In this case it is exclusive, but this conclusion is not immediately clear if we reason in terms of a purely logical notation. When conditionals of this sort appear as premises of inferences such as in Modus Ponens, the blurry nature of the disjunction is often a source of error, and empirical evidence confirm these predictions (see chapter 2, in particular pp. 40-44).
Notwithstanding the efforts of constructing a logic of thought on the basis of purely formal notation, the diagrammatic representation enables us to represent the possible combinations at hand, and to clarify cases of vagueness. Logical notation comes later, when we express those models as propositions.
The book discusses at length these and other puzzles. Whoever is interested in a detailed account of how visual, iconic, and model representations can do a better work than formal rules in explaining reasoning, would find Part III (chapter 10 on If-clauses) and Part VII (where the role of diagrams is discussed) particularly interesting.
Before concluding, I would like to make some brief remarks on this point: for all those who have familiarity with the debate over the normative role of logic, it will not be surprised to hear that logic is not a grammar of the mind. But one can object to the author's position by arguing that the difficulty in understanding the role of logic in reasoning is due to the representationalist framework of the model theory of mind, not to logic itself. Within this framework, the distinction between form and content of a proposition is assumed at the outset. Classical logic relies upon this distinction to study models of inferences whose validity depends only on the form of the inference, not on the content of propositions.
In contrast with this view, one can think of a different kind of inferences, that are valid quite independently of the logical constants that appear therein. For instance, the inference from "London is South of York" to "York is North of London" is valid although no logical vocabulary appears in the inferential step. These are called material inferences, which are valid in virtue of the content of the terms and propositions they contain. This idea, originally due to Wittgenstein and later refined by Wilfrid Sellars, conceives of the form of inferences as the explicit counterpart of particular inferences already taken as valid by a community of speakers. Here the representationalist view is turned upside down and representations are rather explained in terms of the practice of making inference. Surprisingly as it might be, this view meets the desiderata of the model theory: first, it starts out with inferential practices, so it captures the dynamic aspect of reasoning crucial to Johnson-Laird. Second, it takes content as an ingredient of validity. Third, it recognizes a role to counterexamples and underlies the fallibilist conception of rationality defended in the book: inferentialist approaches admit that what was treated as a valid inference in the past can be later discovered unwarranted in the light of new scientific evidence. Surely enough, pre-Galilean scientists believed in the inference from "The Sun revolves around the Earth" to "Earth is at the center of the Solar system", which was later disproved. But, the fact that inferences of this sort are wrong is not an argument against logic as such. Rather it shows that a more critical approach to the given tradition can elicit logical models that explain conceptual change and the complexity of natural language without debunking logic from its role in reasoning.
However, whether or not one is skeptical that cognitive science is able to explain away the logical nature of reasoning, in reading How We Reason readers will remain impressed by the breath and depth of Johnson-Laird's analysis. The empirical evidence that supports his endeavor is convincing, and the clear prose makes this book a guide for students and teachers in any course in epistemology, rationality, and scientific reasoning.
© 2010 Daniele Santoro
Daniele Santoro, Research Fellow, Luiss University - Rome