Howard B. Kaplan – författare

This book is about human behavior and, more particularly, about a class of human behaviors-those behaviors by people that have themselves as the object of their behaviors. These self-referent behaviors are social in nature in the sense that in large measure, they are the outcomes of pervasive social processes and are themselves major influences on social outcomes. As such, self-referent behaviors have the potential to be sig­ nificant organizing constructs in the study of the broader field of social psychology. In any case, they are regarded here as of intrinsic interest and are the focus of this volume. Four broad categories of self-referent behaviors are considered with regard to their social bases and conse­ quences as these are revealed in the social psychological and sociological literature. With appropriate discriminations made within each group­ ing, the four categories are: self-conceiving, self-evaluating, self-feeling, and self-protective-self-enhancing responses. Following a consideration of the social antecedents and consequences of each category of self­ referent behaviors, I present a final summary statement that outlines a theoretical model of the additive and interactive social influences on and consequences of the mutually influential self-referent behaviors. The outline of the theoretical model reflects my synthesis of the apparently relevant theoretical and empirical literature and is intended to function as a framework for the orderly incorporation of new theoretical asser­ tions and more or less apparently relevant empirical associations.

This volume brings together a sample of the best of the studies that illustrate two recent trends in research on deviant behavior. The first of these trends is the investigation of deviant behavior in longitudinal perspective. Panels of subjects are followed over long periods of time to establish temporal relationships be­ tween deviant behavior and the antecedents and consequences of deviant behav­ ior. The second trend in contemporary research on deviance is the recognition of the association among forms of deviant behavior such as violence, drug abuse, and theft. The recognition of the covariation among forms of deviance stimulated questions regarding the nature of the relationships among multiple forms of de­ viance. Is one form of deviant behavior a cause or a consequence of other forms of deviant behavior? What variables mediate and moderate such causal relation­ ships? Do different forms of deviant behavior have common antecedents and consequences? Independent of the foregoing relationships, do particular forms of deviant behavior have unique antecedents and consequences? The eight original research studies that, along with the introduction and overview, constitute this volume are based on data drawn from among the most influential longitudinal studies in the general area of deviant behavior. These studies variously consider common and pattern-specific antecedents and conse­ quences, reciprocal influences, and intervening and moderating variables in causal relationships among drug use, crime, and other forms of deviance.

Inthisvolumewereportaseriesofanalysesofpaneldatadesignedtotestaspects ofacomprehensivetheoreticalstatementaboutthesocialandsocial-psychological processesthatplayapartintheonsetandcourse(includingcessationandcontinu- ationatincreased,decreased,orconstantlevels)ofdeviantbehavior. InPartIwe outlineourtheoreticalandmethodologicalapproachtothestudyofdeviantbehav- ior. ChapterIpresentsacomprehensivetheoreticalstatementthathasevolvedover aperiodofmorethantwodecades(Kaplan,1972,1975b,1980,1982,1983,1984, 1986,1995,1996)outofaconsiderationofthetheoreticalandempiricalreports ofothersandinresponsetoourownearliertestsofthegeneraltheory(Kaplan & Damphousse,1997;Kaplan&Fukurai,1992;Kaplan&Johnson,1991;Kaplan, Johnson, &Bailey,1986,1987,1988;Kaplan,Martin, &Johnson,1986;Kaplan & Peck,1992).Thestatementisorganizedasaresponsetofourinterrelatedquestions: Whatsocialandsocial-psychologicalfactors(1)influencethesocialdefinitionof deviantbehavior;(2)motivateindividualstoperformdeviantbehaviors;(3)facili- tatetheperformanceofdeviantbehaviorindependentlyoforininteractionwithfac- torsthatinfluencemotivationtoengageindeviantbehavior;and(4)influencethe stabilityofdeviantbehavior,independentlyoforininteractionwithfactorsthat influencetheinitiationofdeviantbehavior?Thisstatementprovidesaframework andrationaleforthemultivariatemodelsweestimateandreportinlaterpartsofthe volume. Chapter2providesdetailsofthepaneldesignandmultivariateanalytic techniques. Thesample,arandomhalfofthe1971cohortofseventhgradersina largeurbanschooldistrict,wastesteduptofourtimesbetweenearlyadolescence andyoungadulthood. Thetheoreticallyinformedmultivariatemodelsaretested usingtheLISRELVIprogram(Joreskog &Sorbom,1986)toestimatethestruc- turalrelationshipsamonglatentvariables. InPartIIweestimateseveralmodelsthataccountforvariationindeviant behaviormeasuredintheninthgradeintermsofconstructsmeasuredinthesev- enthandeighthgrades.InChapter3weestimate,forallsubjectswhoprovideddata duringtheseventh,eighth,andninthgradetestings,aseriesoffourincreasingly elaboratedmodelsinwhichanewvariableisaddedtotheimmediatelypreceding modelasplayingcommonantecedentand/orinterveningexplanatoryroles. The vii viii Preface mostinclusivemodelhasbeenpublishedpreviouslyinitspresentform(Kaplan & Johnson,1991);thethreelessinclusivemodelshaveappearedinsomewhatdiffer- entform(Johnson &Kaplan,1987;Kaplan,Johnson, &Bailey,1986,1987;Kaplan, Martin, &Johnson,1986). Thepresentversionsdifferfromtheearlierversionsin termsofexogenousvariables,measurementvariables,samplesize,andinclusionof correlateddisturbancesinthemodels. Therepetitionofthemostinclusivemodel andthereestimationoftheotherthreemodelspermitustodescribeandeasilycom- municatetheeffectsofeachsuccessivetheoreticalelaborationandtodiscussthe resultsingreaterdetailthanpublicationintheperiodicalliteraturegenerallyper- mits. Thereproductionofthemostinclusivemodelalsoprovidesabaseagainst whichwecancomparethemodelsestimatedinthenexttwochapters.InChapters 4and5,respectively,weestimatethismodelforsubgroupsinordertotestassump- tionsabouttheequivalenceofmeasurementmodelsandstructuralinvariance betweenthedifferentsocialgroupings. InChapter4weestimatethemodelfor malesandfemales. InChapter5weestimatethemostinclusiveexplanatorymodel forsubgroupsdifferentiatedaccordingtorace/ethnicity. InPartIIIwereportanalysesthataddressthevalidityofthemodelasan explanationofdeviantbehaviorthatismeasuredandexpressedinyoungadult- hood. InChapter6theelaboratedmodelasanexplanationofdeviantbehaviorin youngadulthoodisestimatedforthemostinclusivegroupingavailable,white malesandfemalesconsideredtogether. Whenwewereattemptingtoconductsub- groupanalysisforgroupsdifferentiatedaccordingtorace/ethnicity,itbecame apparentthat-unlikethesituationinpredictingdeviantbehaviorinearlyadoles- cence-themeasuresofdeviantbehaviorusedfortheyoungadultanalyses formedavalidconstructonlyforthewhitesubjects. Themeasuresoftheconstruct werenotsufficientlyvalidorreliabletopermitestimationinasampleofyoung blackadults. Further,forHispanicsubjectsthesamplesizesimplywastoosmall toprovidestableestimatesrelativetothenumberofparametersinthemostcom- prehensivemodel.Hence,inordertoconsiderthedifferentialexplanatorypower oftheelaboratedmodelinaccountingfordeviantbehaviorinyoungadulthood andearlyadolescence,respectively,weusedthemodelsforwhitesubjectsas pointsofreference. InChapter7weapplytheelaboratedmodeltotheexplana- tionofdevianceinyoungadulthoodformalesandfemalesconsideredseparately. InPartIVwesummarizetheanalysesandofferconclusionsaboutthe significanceofthiswork. Chapter8considerstheusefulnessofthecomprehen- sivetheoryinexplainingsomeofthevarianceindeviantbehavioratdifferent pointsinthelifecycleandspecifyingthenatureoftherelationshipsamong explanatoryvariables. Inclosing,weofferillustrativesubsequentstudiesthat buildontheearliertheoryandanalyticstrategies. Acknowledgments ThisworkwassupportedinpartbyresearchgrantsROIDA02497andROI DA04310andbyaResearchScientistAward(K05DAOOI36)tothefIrst-named author,allfromtheNationalInstituteonDrugAbuse. Wearepleasedtorecognizetheunwaveringdedicationof"Sam"McLean, HollyGroves,andJeffersonRogerstothetechnicalproductionofthemanuscript. Wherewerecognizetheoriginsofourideas,weacknowledgethesesources byappropriatetextualcitations.However,manyofourideas-particularlyas thesearesynthesizedinourcomprehensivetheoryofdeviantbehavior-arethe productsoflifetimesofscholarlyactivityandtheprecisesourcesororiginalityof theseideascannolongerbedetermined. Thus,oftenwemustleaveittoothersto makejudgmentsaboutthehistoricalroots,originality,orindependentcreationof thetheoreticalstatementsinthisvolume. ix Contents PART I. THEORETICAL AND METHODOLOGICAL APPROACHES TO THE STUDY OF DEVIANT BEHAVIOR 1. Toward a General Theory of Deviant Behavior 3 TheNatureofDeviance...3 MotivationtoCommitDeviantActsthatViolateMembership GroupNorms...6 MotivationtoCommitDeviantActsthatConformtoMembershipGroup Norms...9 ActingOutDeviantDispositions 10 ContinuityofDeviantBehavior...17 2. Method...25 SampleandDataCollection...25 Analysis...26 MeasurementModel 26 StructuralModel 30 SubgroupComparisons 36 PART II. DEVIANT BEHAVIOR IN ADOLESCENCE 3. An Elaboration Strategy for the Study of Deviant Behavior 41 ModelI:Self-Rejection intheExplanationofDeviance...43 ModelII:ContinuityofEarlyDeviance...47 Methods...53 xi xii Contents Results...58 DiscussionofModelsIandII 63 ModelIII:DeviantPeerAssociationsandDeviantBehavior 66 Theory...67 Methods...73 Results...75 DiscussionofModelIII...79 Conclusion...86 ModelIV:NegativeSocialSanctionsfromtheLabelingPerspective 87 EmpiricalSupport 88 TheoreticalIssues 89 ElaboratingaModelofDeviantBehavior 96 Method 100 Results...103 DiscussionofModelIV...108 Appendix...119 4. GenderasaModeratorinExplanationsofAdolescentDeviance*.

Innovation in the private and public sectors has been the subject of a great deal of study, since it is central to the economic growth and effective governance of most organizations. Determining the changes needed in an organization is less difficult than determining how to make the changes work. This volume is the result of a three-year study that investigated the factors associated with the implementation of program changes in a nonprofit community welfare agency. The results of the research showed that a greater understanding of the implementation process was needed, both by the workers and administrators. In addition, factors other than "need" were determined to influence what action is taken to implement the recommendations. This book takes the results of the study and demonstrates how implementation can be successful in an organization. This work includes factors such as administration behaviour and perception, its effect on board members, mobility orientation and job satisfaction.

Innovation in the private and public sectors has been the subject of a great deal of study, since it is central to the economic growth and effective governance of most organizations. Determining the changes needed in an organization is less difficult than determining how to make the changes work. This volume is the result of a three-year study that investigated the factors associated with the implementation of program changes in a nonprofit community welfare agency. The results of the research showed that a greater understanding of the implementation process was needed, both by the workers and administrators. In addition, factors other than "need" were determined to influence what action is taken to implement the recommendations. This book takes the results of the study and demonstrates how implementation can be successful in an organization. This work includes factors such as administration behavior and perception, its effect on board members, mobility orientation, job satisfaction, and the prediction of program change and will be of interest to management in both the private and non-profit sector as well as students of organizational sociology and psychology.

This volume is about understanding the relationship between deviance and selected correlates of deviance in one generation and deviance and its selected correlates in the next generation. By examining the significance of these constructs in the parental generation as part of the explanation for the same constructs in the child’s generation, we contribute to an und- standing of the phenomena. This contribution, however, is quite limited in the sense that we are examining in essence bivariate relationships—the association between first-generation and second-generation phenomena— while ignoring all of the other influences on the second-generation p- nomena that do not stem from or account for the intergenerational relationship. Nevertheless, the study of intergenerational parallelism of deviance and its correlates justifiably has excited attention and resulted in a vo- minous literature greater than might have been expected for any parti- lar bivariate relationships because of the mystique surrounding ideas—cycle of violence, reproduction of culture, to name but a few—that are evoked by consideration of the association between such phenomena in one generation and the same phenomena in a successive generation.

This volume is about understanding the relationship between deviance and selected correlates of deviance in one generation and deviance and its selected correlates in the next generation. By examining the significance of these constructs in the parental generation as part of the explanation for the same constructs in the child’s generation, we contribute to an und- standing of the phenomena. This contribution, however, is quite limited in the sense that we are examining in essence bivariate relationships—the association between first-generation and second-generation phenomena— while ignoring all of the other influences on the second-generation p- nomena that do not stem from or account for the intergenerational relationship. Nevertheless, the study of intergenerational parallelism of deviance and its correlates justifiably has excited attention and resulted in a vo- minous literature greater than might have been expected for any parti- lar bivariate relationships because of the mystique surrounding ideas—cycle of violence, reproduction of culture, to name but a few—that are evoked by consideration of the association between such phenomena in one generation and the same phenomena in a successive generation.

Inthisvolumewereportaseriesofanalysesofpaneldatadesignedtotestaspects ofacomprehensivetheoreticalstatementaboutthesocialandsocial-psychological processesthatplayapartintheonsetandcourse(includingcessationandcontinu- ationatincreased,decreased,orconstantlevels)ofdeviantbehavior. InPartIwe outlineourtheoreticalandmethodologicalapproachtothestudyofdeviantbehav- ior. ChapterIpresentsacomprehensivetheoreticalstatementthathasevolvedover aperiodofmorethantwodecades(Kaplan,1972,1975b,1980,1982,1983,1984, 1986,1995,1996)outofaconsiderationofthetheoreticalandempiricalreports ofothersandinresponsetoourownearliertestsofthegeneraltheory(Kaplan & Damphousse,1997;Kaplan&Fukurai,1992;Kaplan&Johnson,1991;Kaplan, Johnson, &Bailey,1986,1987,1988;Kaplan,Martin, &Johnson,1986;Kaplan & Peck,1992).Thestatementisorganizedasaresponsetofourinterrelatedquestions: Whatsocialandsocial-psychologicalfactors(1)influencethesocialdefinitionof deviantbehavior;(2)motivateindividualstoperformdeviantbehaviors;(3)facili- tatetheperformanceofdeviantbehaviorindependentlyoforininteractionwithfac- torsthatinfluencemotivationtoengageindeviantbehavior;and(4)influencethe stabilityofdeviantbehavior,independentlyoforininteractionwithfactorsthat influencetheinitiationofdeviantbehavior?Thisstatementprovidesaframework andrationaleforthemultivariatemodelsweestimateandreportinlaterpartsofthe volume. Chapter2providesdetailsofthepaneldesignandmultivariateanalytic techniques. Thesample,arandomhalfofthe1971cohortofseventhgradersina largeurbanschooldistrict,wastesteduptofourtimesbetweenearlyadolescence andyoungadulthood. Thetheoreticallyinformedmultivariatemodelsaretested usingtheLISRELVIprogram(Joreskog &Sorbom,1986)toestimatethestruc- turalrelationshipsamonglatentvariables. InPartIIweestimateseveralmodelsthataccountforvariationindeviant behaviormeasuredintheninthgradeintermsofconstructsmeasuredinthesev- enthandeighthgrades.InChapter3weestimate,forallsubjectswhoprovideddata duringtheseventh,eighth,andninthgradetestings,aseriesoffourincreasingly elaboratedmodelsinwhichanewvariableisaddedtotheimmediatelypreceding modelasplayingcommonantecedentand/orinterveningexplanatoryroles. The vii viii Preface mostinclusivemodelhasbeenpublishedpreviouslyinitspresentform(Kaplan & Johnson,1991);thethreelessinclusivemodelshaveappearedinsomewhatdiffer- entform(Johnson &Kaplan,1987;Kaplan,Johnson, &Bailey,1986,1987;Kaplan, Martin, &Johnson,1986). Thepresentversionsdifferfromtheearlierversionsin termsofexogenousvariables,measurementvariables,samplesize,andinclusionof correlateddisturbancesinthemodels. Therepetitionofthemostinclusivemodel andthereestimationoftheotherthreemodelspermitustodescribeandeasilycom- municatetheeffectsofeachsuccessivetheoreticalelaborationandtodiscussthe resultsingreaterdetailthanpublicationintheperiodicalliteraturegenerallyper- mits. Thereproductionofthemostinclusivemodelalsoprovidesabaseagainst whichwecancomparethemodelsestimatedinthenexttwochapters.InChapters 4and5,respectively,weestimatethismodelforsubgroupsinordertotestassump- tionsabouttheequivalenceofmeasurementmodelsandstructuralinvariance betweenthedifferentsocialgroupings. InChapter4weestimatethemodelfor malesandfemales. InChapter5weestimatethemostinclusiveexplanatorymodel forsubgroupsdifferentiatedaccordingtorace/ethnicity. InPartIIIwereportanalysesthataddressthevalidityofthemodelasan explanationofdeviantbehaviorthatismeasuredandexpressedinyoungadult- hood. InChapter6theelaboratedmodelasanexplanationofdeviantbehaviorin youngadulthoodisestimatedforthemostinclusivegroupingavailable,white malesandfemalesconsideredtogether. Whenwewereattemptingtoconductsub- groupanalysisforgroupsdifferentiatedaccordingtorace/ethnicity,itbecame apparentthat-unlikethesituationinpredictingdeviantbehaviorinearlyadoles- cence-themeasuresofdeviantbehaviorusedfortheyoungadultanalyses formedavalidconstructonlyforthewhitesubjects. Themeasuresoftheconstruct werenotsufficientlyvalidorreliabletopermitestimationinasampleofyoung blackadults. Further,forHispanicsubjectsthesamplesizesimplywastoosmall toprovidestableestimatesrelativetothenumberofparametersinthemostcom- prehensivemodel.Hence,inordertoconsiderthedifferentialexplanatorypower oftheelaboratedmodelinaccountingfordeviantbehaviorinyoungadulthood andearlyadolescence,respectively,weusedthemodelsforwhitesubjectsas pointsofreference. InChapter7weapplytheelaboratedmodeltotheexplana- tionofdevianceinyoungadulthoodformalesandfemalesconsideredseparately. InPartIVwesummarizetheanalysesandofferconclusionsaboutthe significanceofthiswork. Chapter8considerstheusefulnessofthecomprehen- sivetheoryinexplainingsomeofthevarianceindeviantbehavioratdifferent pointsinthelifecycleandspecifyingthenatureoftherelationshipsamong explanatoryvariables. Inclosing,weofferillustrativesubsequentstudiesthat buildontheearliertheoryandanalyticstrategies. Acknowledgments ThisworkwassupportedinpartbyresearchgrantsROIDA02497andROI DA04310andbyaResearchScientistAward(K05DAOOI36)tothefIrst-named author,allfromtheNationalInstituteonDrugAbuse. Wearepleasedtorecognizetheunwaveringdedicationof"Sam"McLean, HollyGroves,andJeffersonRogerstothetechnicalproductionofthemanuscript. Wherewerecognizetheoriginsofourideas,weacknowledgethesesources byappropriatetextualcitations.However,manyofourideas-particularlyas thesearesynthesizedinourcomprehensivetheoryofdeviantbehavior-arethe productsoflifetimesofscholarlyactivityandtheprecisesourcesororiginalityof theseideascannolongerbedetermined. Thus,oftenwemustleaveittoothersto makejudgmentsaboutthehistoricalroots,originality,orindependentcreationof thetheoreticalstatementsinthisvolume. ix Contents PART I. THEORETICAL AND METHODOLOGICAL APPROACHES TO THE STUDY OF DEVIANT BEHAVIOR 1. Toward a General Theory of Deviant Behavior 3 TheNatureofDeviance...3 MotivationtoCommitDeviantActsthatViolateMembership GroupNorms...6 MotivationtoCommitDeviantActsthatConformtoMembershipGroup Norms...9 ActingOutDeviantDispositions 10 ContinuityofDeviantBehavior...17 2. Method...25 SampleandDataCollection...25 Analysis...26 MeasurementModel 26 StructuralModel 30 SubgroupComparisons 36 PART II. DEVIANT BEHAVIOR IN ADOLESCENCE 3. An Elaboration Strategy for the Study of Deviant Behavior 41 ModelI:Self-Rejection intheExplanationofDeviance...43 ModelII:ContinuityofEarlyDeviance...47 Methods...53 xi xii Contents Results...58 DiscussionofModelsIandII 63 ModelIII:DeviantPeerAssociationsandDeviantBehavior 66 Theory...67 Methods...73 Results...75 DiscussionofModelIII...79 Conclusion...86 ModelIV:NegativeSocialSanctionsfromtheLabelingPerspective 87 EmpiricalSupport 88 TheoreticalIssues 89 ElaboratingaModelofDeviantBehavior 96 Method 100 Results...103 DiscussionofModelIV...108 Appendix...119 4. GenderasaModeratorinExplanationsofAdolescentDeviance*.

Psychosocial Stress: Trends in Theory and Research is a collection of literatures that discusses the psychosocial basis of psychological distress. The book contains six papers that are organized into three parts. The text first covers the prevalent themes in psychosocial stress research, which include role strains, dimensions of life, and coping efforts. The next part presents the conceptual framework studying for psychosocial stress. The last part tackles the methodological issues in psychosocial stress research. The book will be of great use to students, researchers, and practitioners of psychology. Scientists from related fields such as sociology will also benefit from the book.

This volume brings together a sample of the best of the studies that illustrate two recent trends in research on deviant behavior. The first of these trends is the investigation of deviant behavior in longitudinal perspective. Panels of subjects are followed over long periods of time to establish temporal relationships be­ tween deviant behavior and the antecedents and consequences of deviant behav­ ior. The second trend in contemporary research on deviance is the recognition of the association among forms of deviant behavior such as violence, drug abuse, and theft. The recognition of the covariation among forms of deviance stimulated questions regarding the nature of the relationships among multiple forms of de­ viance. Is one form of deviant behavior a cause or a consequence of other forms of deviant behavior? What variables mediate and moderate such causal relation­ ships? Do different forms of deviant behavior have common antecedents and consequences? Independent of the foregoing relationships, do particular forms of deviant behavior have unique antecedents and consequences? The eight original research studies that, along with the introduction and overview, constitute this volume are based on data drawn from among the most influential longitudinal studies in the general area of deviant behavior. These studies variously consider common and pattern-specific antecedents and conse­ quences, reciprocal influences, and intervening and moderating variables in causal relationships among drug use, crime, and other forms of deviance.

This volume brings together a sample of the best of the studies that illustrate two recent trends in research on deviant behavior. Is one form of deviant behavior a cause or a consequence of other forms of deviant behavior?

This book is about human behavior and, more particularly, about a class of human behaviors-those behaviors by people that have themselves as the object of their behaviors. These self-referent behaviors are social in nature in the sense that in large measure, they are the outcomes of pervasive social processes and are themselves major influences on social outcomes. As such, self-referent behaviors have the potential to be sig­ nificant organizing constructs in the study of the broader field of social psychology. In any case, they are regarded here as of intrinsic interest and are the focus of this volume. Four broad categories of self-referent behaviors are considered with regard to their social bases and conse­ quences as these are revealed in the social psychological and sociological literature. With appropriate discriminations made within each group­ ing, the four categories are: self-conceiving, self-evaluating, self-feeling, and self-protective-self-enhancing responses. Following a consideration of the social antecedents and consequences of each category of self­ referent behaviors, I present a final summary statement that outlines a theoretical model of the additive and interactive social influences on and consequences of the mutually influential self-referent behaviors. The outline of the theoretical model reflects my synthesis of the apparently relevant theoretical and empirical literature and is intended to function as a framework for the orderly incorporation of new theoretical asser­ tions and more or less apparently relevant empirical associations.

This book is about human behavior and, more particularly, about a class of human behaviors-those behaviors by people that have themselves as the object of their behaviors. These self-referent behaviors are social in nature in the sense that in large measure, they are the outcomes of pervasive social processes and are themselves major influences on social outcomes. As such, self-referent behaviors have the potential to be sig­ nificant organizing constructs in the study of the broader field of social psychology. In any case, they are regarded here as of intrinsic interest and are the focus of this volume. Four broad categories of self-referent behaviors are considered with regard to their social bases and conse­ quences as these are revealed in the social psychological and sociological literature. With appropriate discriminations made within each group­ ing, the four categories are: self-conceiving, self-evaluating, self-feeling, and self-protective-self-enhancing responses. Following a consideration of the social antecedents and consequences of each category of self­ referent behaviors, I present a final summary statement that outlines a theoretical model of the additive and interactive social influences on and consequences of the mutually influential self-referent behaviors. The outline of the theoretical model reflects my synthesis of the apparently relevant theoretical and empirical literature and is intended to function as a framework for the orderly incorporation of new theoretical asser­ tions and more or less apparently relevant empirical associations.