Adam Pautz
- Published in print:
- 2010
- Published Online:
- January 2011
- ISBN:
- 9780195386196
- eISBN:
- 9780199866748
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195386196.003.0010
- Subject:
- Philosophy, General
The standard arguments for explaining visual experience in terms of intentional content are based on the transparency observation, physicalism about the mind, or on the analysis of statements ...
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The standard arguments for explaining visual experience in terms of intentional content are based on the transparency observation, physicalism about the mind, or on the analysis of statements describing how things look. I believe that the standard arguments fail. In my view, there is no quick and easy argument for the intentional view. Nevertheless I believe that there is an argument to be made for the intentional view of visual experience. It takes the form of an inference to the best explanation. Both veridical and nonveridical visual experiences can ground the capacity to have beliefs about the external world. Visual experiences, like beliefs and other standard intentional states, can be indeterminate and depict impossible scenarios. The best explanation of these and other features of visual experience, I will argue, is that both veridical and nonveridical experiences are themselves intentional states of a kind more basic than belief.Less
The standard arguments for explaining visual experience in terms of intentional content are based on the transparency observation, physicalism about the mind, or on the analysis of statements describing how things look. I believe that the standard arguments fail. In my view, there is no quick and easy argument for the intentional view. Nevertheless I believe that there is an argument to be made for the intentional view of visual experience. It takes the form of an inference to the best explanation. Both veridical and nonveridical visual experiences can ground the capacity to have beliefs about the external world. Visual experiences, like beliefs and other standard intentional states, can be indeterminate and depict impossible scenarios. The best explanation of these and other features of visual experience, I will argue, is that both veridical and nonveridical experiences are themselves intentional states of a kind more basic than belief.
David F. Hendry, Adrian R. Pagan, and J. Denis Sargan
- Published in print:
- 2000
- Published Online:
- November 2003
- ISBN:
- 9780198293545
- eISBN:
- 9780191596391
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0198293542.003.0005
- Subject:
- Economics and Finance, Econometrics
This survey provides a route map, sketching the major issues, models, concepts, and techniques. A taxonomy of model types is presented, each being examined for advantages and drawbacks as a generic ...
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This survey provides a route map, sketching the major issues, models, concepts, and techniques. A taxonomy of model types is presented, each being examined for advantages and drawbacks as a generic form. Exogeneity and the overall model reduction framework are described. Systems are considered, and the problem of testing autoregressive errors against mis‐specification of the lag structure is resolved using the notion of common factors in lag polynomials.Less
This survey provides a route map, sketching the major issues, models, concepts, and techniques. A taxonomy of model types is presented, each being examined for advantages and drawbacks as a generic form. Exogeneity and the overall model reduction framework are described. Systems are considered, and the problem of testing autoregressive errors against mis‐specification of the lag structure is resolved using the notion of common factors in lag polynomials.
Timothy Gowers
- Published in print:
- 2012
- Published Online:
- October 2017
- ISBN:
- 9780691149042
- eISBN:
- 9781400842681
- Item type:
- chapter
- Publisher:
- Princeton University Press
- DOI:
- 10.23943/princeton/9780691149042.003.0007
- Subject:
- Mathematics, History of Mathematics
This chapter examines vividness in mathematics and narrative. It first gives two presentations of the mathematical notion of a group before explaining how to calculate highest common factors. It then ...
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This chapter examines vividness in mathematics and narrative. It first gives two presentations of the mathematical notion of a group before explaining how to calculate highest common factors. It then considers the role of figures of speech, such as metaphor and irony, in mathematics and proceeds by citing a few passages from literature that highlight the use of concrete details to convey abstract thoughts; these include passages from Charles Dickens's Bleak House, Alan Hollinghurst's The Folding Star, and George Eliot's Middlemarch. The chapter argues that when working through a totally analogous process, exactly the same response can be created in certain mathematical texts.Less
This chapter examines vividness in mathematics and narrative. It first gives two presentations of the mathematical notion of a group before explaining how to calculate highest common factors. It then considers the role of figures of speech, such as metaphor and irony, in mathematics and proceeds by citing a few passages from literature that highlight the use of concrete details to convey abstract thoughts; these include passages from Charles Dickens's Bleak House, Alan Hollinghurst's The Folding Star, and George Eliot's Middlemarch. The chapter argues that when working through a totally analogous process, exactly the same response can be created in certain mathematical texts.
Charles R. Legg and David Booth (eds)
- Published in print:
- 1994
- Published Online:
- March 2012
- ISBN:
- 9780198547877
- eISBN:
- 9780191724275
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198547877.001.0001
- Subject:
- Neuroscience, Behavioral Neuroscience
This is the first book to deal with both the psychological and neurobiological mechanisms in appetites for drugs, food, sex, and gambling, and considers whether there are common factors between them. ...
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This is the first book to deal with both the psychological and neurobiological mechanisms in appetites for drugs, food, sex, and gambling, and considers whether there are common factors between them. The book approaches this by looking at the bases of both normal and abnormal appetites in humans.Less
This is the first book to deal with both the psychological and neurobiological mechanisms in appetites for drugs, food, sex, and gambling, and considers whether there are common factors between them. The book approaches this by looking at the bases of both normal and abnormal appetites in humans.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0003
- Subject:
- Psychology, Social Psychology
This chapter focuses on important requirements that must be satisfied and decisions that must be made in the actual implementation of an exploratory factor analysis (EFA) in research. More ...
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This chapter focuses on important requirements that must be satisfied and decisions that must be made in the actual implementation of an exploratory factor analysis (EFA) in research. More specifically, it outlines three primary decisions that researchers need to address when conducting EFA: selecting from an array of model fitting procedures that estimate the parameters of the common factor model; determining how many common factors should be specified in the model when fitting it to the data; deciding whether the resulting solution should be rotated to aid the interpretation of the results and if so, determining what specific rotation procedure should be used. The challenge of determining the appropriate rotating factor solutions is called rotational indeterminacy.Less
This chapter focuses on important requirements that must be satisfied and decisions that must be made in the actual implementation of an exploratory factor analysis (EFA) in research. More specifically, it outlines three primary decisions that researchers need to address when conducting EFA: selecting from an array of model fitting procedures that estimate the parameters of the common factor model; determining how many common factors should be specified in the model when fitting it to the data; deciding whether the resulting solution should be rotated to aid the interpretation of the results and if so, determining what specific rotation procedure should be used. The challenge of determining the appropriate rotating factor solutions is called rotational indeterminacy.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0001
- Subject:
- Psychology, Social Psychology
This book provides a non-mathematical introduction to exploratory factor analysis (EFA) or unrestricted factor analysis and how it is implemented. It also discusses the procedures for conducting ...
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This book provides a non-mathematical introduction to exploratory factor analysis (EFA) or unrestricted factor analysis and how it is implemented. It also discusses the procedures for conducting confirmatory factor analysis or restricted factor analysis and compares it with principal component analysis. The procedures for determining the appropriate number of factors and methods for rotating factor solutions are described. In addition, the book explains the application of different factor analytic procedures for analyses using common statistical packages, as well as a free package available on the Web. Practical instructions on how to conduct a number of useful factor analytic procedures not included in the statistical packages are presented as well. This introductory chapter looks at the common factor model, a mathematical model that forms the basis of a set of statistical procedures for determining whether large sets of variables can be more parsimoniously represented as measures of one or a few underlying constructs. The model's basic conceptual premises are outlined, along with its pictorial representation and mathematical expression.Less
This book provides a non-mathematical introduction to exploratory factor analysis (EFA) or unrestricted factor analysis and how it is implemented. It also discusses the procedures for conducting confirmatory factor analysis or restricted factor analysis and compares it with principal component analysis. The procedures for determining the appropriate number of factors and methods for rotating factor solutions are described. In addition, the book explains the application of different factor analytic procedures for analyses using common statistical packages, as well as a free package available on the Web. Practical instructions on how to conduct a number of useful factor analytic procedures not included in the statistical packages are presented as well. This introductory chapter looks at the common factor model, a mathematical model that forms the basis of a set of statistical procedures for determining whether large sets of variables can be more parsimoniously represented as measures of one or a few underlying constructs. The model's basic conceptual premises are outlined, along with its pictorial representation and mathematical expression.
David F. Hendry
- Published in print:
- 2000
- Published Online:
- November 2003
- ISBN:
- 9780198293545
- eISBN:
- 9780191596391
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0198293542.003.0006
- Subject:
- Economics and Finance, Econometrics
The ‘time‐series’ approach to econometrics is critically evaluated, and analytical test power response surfaces presented. Non‐stationarity, differencing and ‘error‐correction’ models (though not yet ...
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The ‘time‐series’ approach to econometrics is critically evaluated, and analytical test power response surfaces presented. Non‐stationarity, differencing and ‘error‐correction’ models (though not yet named) are discussed. Residual autocorrelation is reinterpreted using Sargan's common factor approach, and embryonic ideas presented on how to explain competing models’ findings to reduce the proliferation of conflicting results. Finally, the respective roles of criticism and construction are considered.Less
The ‘time‐series’ approach to econometrics is critically evaluated, and analytical test power response surfaces presented. Non‐stationarity, differencing and ‘error‐correction’ models (though not yet named) are discussed. Residual autocorrelation is reinterpreted using Sargan's common factor approach, and embryonic ideas presented on how to explain competing models’ findings to reduce the proliferation of conflicting results. Finally, the respective roles of criticism and construction are considered.
Larry E. Beutler, John F. Clarkin, and Bruce Bongar
- Published in print:
- 2000
- Published Online:
- March 2012
- ISBN:
- 9780195105308
- eISBN:
- 9780199848522
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195105308.003.0007
- Subject:
- Psychology, Clinical Psychology
Optimal and enhanced treatment attends to parameters that distinguish individual patients beyond the nature of the depression itself. They ...
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Optimal and enhanced treatment attends to parameters that distinguish individual patients beyond the nature of the depression itself. They differ from the basic guidelines described in that they require some special expertise on the part of the clinician and frequently entail the monitoring of actual in-therapy activity in order to ensure that the moment-to-moment interventions are compatible with the needs and reactions of the patient. This chapter summarizes the results of the effort to cross-validate those preliminary principles that relate to the selection of specific treatment models and philosophies or of particular classes and families of techniques. These are the guidelines that seek to apply optimal matches of treatments to patients. Here, the focus is on optimal guidelines, those that may require special clinician training and monitoring of in-session treatment. This chapter also assesses the predictive efficiency of three models from the psychotherapy research and compares them to that of the more elaborate systematic treatment selection model: the common factors model, the psychotherapy procedures model, and the technical-eclectic therapy matching model.Less
Optimal and enhanced treatment attends to parameters that distinguish individual patients beyond the nature of the depression itself. They differ from the basic guidelines described in that they require some special expertise on the part of the clinician and frequently entail the monitoring of actual in-therapy activity in order to ensure that the moment-to-moment interventions are compatible with the needs and reactions of the patient. This chapter summarizes the results of the effort to cross-validate those preliminary principles that relate to the selection of specific treatment models and philosophies or of particular classes and families of techniques. These are the guidelines that seek to apply optimal matches of treatments to patients. Here, the focus is on optimal guidelines, those that may require special clinician training and monitoring of in-session treatment. This chapter also assesses the predictive efficiency of three models from the psychotherapy research and compares them to that of the more elaborate systematic treatment selection model: the common factors model, the psychotherapy procedures model, and the technical-eclectic therapy matching model.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0002
- Subject:
- Psychology, Social Psychology
This chapter looks at the key considerations that researchers should take into account in determining when it is appropriate to conduct an exploratory factor analysis (EFA) using the common factor ...
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This chapter looks at the key considerations that researchers should take into account in determining when it is appropriate to conduct an exploratory factor analysis (EFA) using the common factor model. It first outlines the requirements for conducting EFA by considering what sorts of research questions are best explored by this type of factor analysis, along with the nature of the data necessary to properly conduct the analysis. It then focuses on the characteristics of the measured variables to be analyzed before turning to the question of when EFA versus confirmatory factor analysis is most appropriate. In case an exploratory approach is selected, the next issue is whether the analysis should be based on the common factor model or the (different but related) principal component analysis model.Less
This chapter looks at the key considerations that researchers should take into account in determining when it is appropriate to conduct an exploratory factor analysis (EFA) using the common factor model. It first outlines the requirements for conducting EFA by considering what sorts of research questions are best explored by this type of factor analysis, along with the nature of the data necessary to properly conduct the analysis. It then focuses on the characteristics of the measured variables to be analyzed before turning to the question of when EFA versus confirmatory factor analysis is most appropriate. In case an exploratory approach is selected, the next issue is whether the analysis should be based on the common factor model or the (different but related) principal component analysis model.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0005
- Subject:
- Psychology, Social Psychology
This chapter explains how many of the key procedures of an exploratory factor analysis (EFA) can be implemented in practice and how the information it provides can be interpreted. After providing a ...
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This chapter explains how many of the key procedures of an exploratory factor analysis (EFA) can be implemented in practice and how the information it provides can be interpreted. After providing a brief review of key considerations that researchers must take into account before conducting an EFA, the chapter introduces the data set that illustrates how the EFA is implemented and interpreted. It then outlines the procedures for determining the appropriate number of common factors before turning to the program syntax for conducting an EFA with a specified number of common factors. An example is given in which EFA rather than a confirmatory factor analysis is used to determine the latent constructs underlying the pattern of correlations among the measured variables. Finally, the chapter discusses key aspects of the output provided by widely used EFA programs, including SPSS, SAS, and CEFA.Less
This chapter explains how many of the key procedures of an exploratory factor analysis (EFA) can be implemented in practice and how the information it provides can be interpreted. After providing a brief review of key considerations that researchers must take into account before conducting an EFA, the chapter introduces the data set that illustrates how the EFA is implemented and interpreted. It then outlines the procedures for determining the appropriate number of common factors before turning to the program syntax for conducting an EFA with a specified number of common factors. An example is given in which EFA rather than a confirmatory factor analysis is used to determine the latent constructs underlying the pattern of correlations among the measured variables. Finally, the chapter discusses key aspects of the output provided by widely used EFA programs, including SPSS, SAS, and CEFA.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0004
- Subject:
- Psychology, Social Psychology
This chapter discusses various assumptions underlying the common factor model and the procedures typically used in its implementation. Ideally, these assumptions should be carefully considered by ...
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This chapter discusses various assumptions underlying the common factor model and the procedures typically used in its implementation. Ideally, these assumptions should be carefully considered by researchers prior to collecting any data for which an exploratory factor analysis is likely to be used. The chapter first considers the key assumptions underlying the common factor model itself, with particular reference to assumptions about how common factors influence measured variables. It compares effects indicator models and causal indicator models as well as linear effects versus nonlinear effects of common factors. It then explores assumptions underlying various procedures commonly used to fit the common factor model to data. It also explains the nature of each assumption and when it is or is not likely to be plausible, along with methods for evaluating the plausibility of the assumption. Finally, it outlines various courses of action when a given assumption is not met.Less
This chapter discusses various assumptions underlying the common factor model and the procedures typically used in its implementation. Ideally, these assumptions should be carefully considered by researchers prior to collecting any data for which an exploratory factor analysis is likely to be used. The chapter first considers the key assumptions underlying the common factor model itself, with particular reference to assumptions about how common factors influence measured variables. It compares effects indicator models and causal indicator models as well as linear effects versus nonlinear effects of common factors. It then explores assumptions underlying various procedures commonly used to fit the common factor model to data. It also explains the nature of each assumption and when it is or is not likely to be plausible, along with methods for evaluating the plausibility of the assumption. Finally, it outlines various courses of action when a given assumption is not met.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.001.0001
- Subject:
- Psychology, Social Psychology
Exploratory factor analysis (EFA) has played a major role in research conducted in the social sciences for more than 100 years, dating back to the pioneering work of Charles Spearman on mental ...
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Exploratory factor analysis (EFA) has played a major role in research conducted in the social sciences for more than 100 years, dating back to the pioneering work of Charles Spearman on mental abilities. Since that time, EFA has become one of the most commonly used quantitative methods in many of the social sciences, including psychology, business, sociology, education, political science, and communications. To a lesser extent, it has also been utilized within the physical and biological sciences. Despite its long and widespread usage in many domains, numerous aspects of the underlying theory and application of EFA are poorly understood by researchers. Indeed, perhaps no widely used quantitative method requires more decisions on the part of a researcher and offers as wide an array of procedural options as EFA does. This book provides a non-mathematical introduction to the underlying theory of EFA and reviews the key decisions that must be made in its implementation. Among the issues discussed are the use of EFA versus confirmatory factor analysis, the use of principal component analysis versus common factor analysis, procedures for determining the appropriate number of factors, and methods for rotating factor solutions. Explanations and illustrations of the application of different factor analytic procedures are provided for analyses using common statistical packages, as well as a free package available on the web. In addition, practical instructions are provided for conducting a number of useful factor analytic procedures not included in the statistical packages.Less
Exploratory factor analysis (EFA) has played a major role in research conducted in the social sciences for more than 100 years, dating back to the pioneering work of Charles Spearman on mental abilities. Since that time, EFA has become one of the most commonly used quantitative methods in many of the social sciences, including psychology, business, sociology, education, political science, and communications. To a lesser extent, it has also been utilized within the physical and biological sciences. Despite its long and widespread usage in many domains, numerous aspects of the underlying theory and application of EFA are poorly understood by researchers. Indeed, perhaps no widely used quantitative method requires more decisions on the part of a researcher and offers as wide an array of procedural options as EFA does. This book provides a non-mathematical introduction to the underlying theory of EFA and reviews the key decisions that must be made in its implementation. Among the issues discussed are the use of EFA versus confirmatory factor analysis, the use of principal component analysis versus common factor analysis, procedures for determining the appropriate number of factors, and methods for rotating factor solutions. Explanations and illustrations of the application of different factor analytic procedures are provided for analyses using common statistical packages, as well as a free package available on the web. In addition, practical instructions are provided for conducting a number of useful factor analytic procedures not included in the statistical packages.
Knut Sundell and Laura Ferrer-Wreder
- Published in print:
- 2013
- Published Online:
- January 2014
- ISBN:
- 9780199973729
- eISBN:
- 9780199386703
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199973729.003.0003
- Subject:
- Social Work, Children and Families
This chapter provides a framework for intervention that further builds the language of treatment science by elaborating the concepts of common elements and common factors and broadening the use of ...
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This chapter provides a framework for intervention that further builds the language of treatment science by elaborating the concepts of common elements and common factors and broadening the use of evidence beyond manualized evidence supported treatments (MESTs). The authors review the advantages and limitations of MESTs. They conclude that new conceptualizations are necessary and present an expanded view of effective practices that involves two principal concepts--common elements and common factors--shows promise for meeting the prerequisites of being effective and accessible to practitioners and yielding greater opportunity for creating positive outcomes for clients. The chapter presents these concepts and related empirical research and practice supports, such as software and websites. Finally, the authors propose an integrative framework for thinking about the role of common factors, common elements, MESTs as well as other sources of knowledge within the field.Less
This chapter provides a framework for intervention that further builds the language of treatment science by elaborating the concepts of common elements and common factors and broadening the use of evidence beyond manualized evidence supported treatments (MESTs). The authors review the advantages and limitations of MESTs. They conclude that new conceptualizations are necessary and present an expanded view of effective practices that involves two principal concepts--common elements and common factors--shows promise for meeting the prerequisites of being effective and accessible to practitioners and yielding greater opportunity for creating positive outcomes for clients. The chapter presents these concepts and related empirical research and practice supports, such as software and websites. Finally, the authors propose an integrative framework for thinking about the role of common factors, common elements, MESTs as well as other sources of knowledge within the field.
Leandre R. Fabrigar and Duane T. Wegener
- Published in print:
- 2011
- Published Online:
- March 2015
- ISBN:
- 9780199734177
- eISBN:
- 9780190255848
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199734177.003.0006
- Subject:
- Psychology, Social Psychology
This chapter summarizes the key issues that researchers need to take into consideration when choosing and implementing exploratory factor analysis (EFA) before offering some conclusions and ...
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This chapter summarizes the key issues that researchers need to take into consideration when choosing and implementing exploratory factor analysis (EFA) before offering some conclusions and recommendations to help readers who are contemplating the use of EFA in their own research. It reviews the basic assumptions of the common factor model, the general mathematical model on which EFA is based, intended to explain the structure of correlations among a battery of measured variables; the issues that researchers should bear in mind in determining when it is appropriate to conduct an EFA; the decisions to be made in conducting an EFA; and the implementation of EFA as well as the interpretation of data it provides.Less
This chapter summarizes the key issues that researchers need to take into consideration when choosing and implementing exploratory factor analysis (EFA) before offering some conclusions and recommendations to help readers who are contemplating the use of EFA in their own research. It reviews the basic assumptions of the common factor model, the general mathematical model on which EFA is based, intended to explain the structure of correlations among a battery of measured variables; the issues that researchers should bear in mind in determining when it is appropriate to conduct an EFA; the decisions to be made in conducting an EFA; and the implementation of EFA as well as the interpretation of data it provides.
Niels Haldrup, Mika Meitz, and Pentti Saikkonen (eds)
- Published in print:
- 2014
- Published Online:
- August 2014
- ISBN:
- 9780199679959
- eISBN:
- 9780191760136
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199679959.001.0001
- Subject:
- Economics and Finance, Econometrics
This book is a collection of 14 original research articles presented at the conference Nonlinear Time Series Econometrics that was held in Ebeltoft, Denmark, in June 2012. The conference gathered ...
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This book is a collection of 14 original research articles presented at the conference Nonlinear Time Series Econometrics that was held in Ebeltoft, Denmark, in June 2012. The conference gathered several eminent time series econometricians to celebrate the work and outstanding career of Professor Timo Teräsvirta, one of the leading scholars in the field of nonlinear time series econometrics. The book is divided into four broad themes that all reflect Timo Teräsvirta’s work and methodology: testing for linearity and functional form, specification testing and estimation of nonlinear time series models in the form of smooth transition models, model selection and econometric methodology, and finally applications within the area of financial econometrics. All these research fields include contributions that represent the state of the art in econometrics, such as testing for neglected nonlinearity in neural network models, time-varying GARCH and smooth transition models, STAR models and common factors in volatility modeling, semi-automatic general to specific model selection for nonlinear dynamic models, high-dimensional data analysis for parametric and semi-parametric regression models with dependent data, commodity price modeling, financial analysts earnings forecasts based on asymmetric loss function, local Gaussian correlation and dependence for asymmetric return dependence, and the use of bootstrap aggregation to improve forecast accuracy. Each chapter represents original scholarly work, and reflects the intellectual impact that Timo Teräsvirta has had, and will continue to have, on the profession.Less
This book is a collection of 14 original research articles presented at the conference Nonlinear Time Series Econometrics that was held in Ebeltoft, Denmark, in June 2012. The conference gathered several eminent time series econometricians to celebrate the work and outstanding career of Professor Timo Teräsvirta, one of the leading scholars in the field of nonlinear time series econometrics. The book is divided into four broad themes that all reflect Timo Teräsvirta’s work and methodology: testing for linearity and functional form, specification testing and estimation of nonlinear time series models in the form of smooth transition models, model selection and econometric methodology, and finally applications within the area of financial econometrics. All these research fields include contributions that represent the state of the art in econometrics, such as testing for neglected nonlinearity in neural network models, time-varying GARCH and smooth transition models, STAR models and common factors in volatility modeling, semi-automatic general to specific model selection for nonlinear dynamic models, high-dimensional data analysis for parametric and semi-parametric regression models with dependent data, commodity price modeling, financial analysts earnings forecasts based on asymmetric loss function, local Gaussian correlation and dependence for asymmetric return dependence, and the use of bootstrap aggregation to improve forecast accuracy. Each chapter represents original scholarly work, and reflects the intellectual impact that Timo Teräsvirta has had, and will continue to have, on the profession.
Edwina Kidd and Ole Fejerskov
- Published in print:
- 2016
- Published Online:
- November 2020
- ISBN:
- 9780198738268
- eISBN:
- 9780191916861
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198738268.003.0006
- Subject:
- Clinical Medicine and Allied Health, Dentistry
The first three chapters of this book have introduced the basics of what dental caries is and how to detect lesions. The next chapter will consider the concept of ...
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The first three chapters of this book have introduced the basics of what dental caries is and how to detect lesions. The next chapter will consider the concept of caries control and begins by explaining why throughout this book the preferred term is caries control, rather than prevention. Remember, the formation of the dental biofilm, and its metabolism is an ubiquitous natural process; it cannot be prevented. So: Question: Who is susceptible to caries lesion development? Answer: Everyone with teeth, from cradle to grave because the metabolism in the dental biofilm is an ubiquitous, natural process. Lesion development and progression, which may occur over time, are symptoms of the process. We should aim to control these processes so that the development of a clinically visible lesion is avoided. However, if clinical lesions develop and progress these symptoms can be arrested by controlling the environment. Thus, all patients with teeth should know how lesions may form and progress, and how to control this. Please note the emphasis on the patient. It is the patient who controls caries with the support and encouragement of the professional. The goals of medicine (and dentistry) are to promote and preserve health if it is impaired, to restore health, and minimize suffering and distress. These goals are embodied in the word ‘prevention’. It is agreed that, with dental caries, this is basically what the dental profession is doing—and has always been doing. In many ways this has become a mantra—the dentists rightly claim that they are conducting prevention when recommending the population to eat less sugar, use fluorides, brush teeth, and when lesions occur, drill and fill, in order to restore the dentition and reduce pain and discomfort. Unfortunately, when dentists go for restoration—without ensuring that the patient understands how to control further caries lesion development—they indirectly stimulate the repair cycle, which ultimately may lead to loss of teeth (see Chapter 5). Sometimes the filling may be described as ‘treatment’ to contrast it with ‘prevention’. The dentist is paid for fillings (treatment) and minimally rewarded for so-called prevention.
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The first three chapters of this book have introduced the basics of what dental caries is and how to detect lesions. The next chapter will consider the concept of caries control and begins by explaining why throughout this book the preferred term is caries control, rather than prevention. Remember, the formation of the dental biofilm, and its metabolism is an ubiquitous natural process; it cannot be prevented. So: Question: Who is susceptible to caries lesion development? Answer: Everyone with teeth, from cradle to grave because the metabolism in the dental biofilm is an ubiquitous, natural process. Lesion development and progression, which may occur over time, are symptoms of the process. We should aim to control these processes so that the development of a clinically visible lesion is avoided. However, if clinical lesions develop and progress these symptoms can be arrested by controlling the environment. Thus, all patients with teeth should know how lesions may form and progress, and how to control this. Please note the emphasis on the patient. It is the patient who controls caries with the support and encouragement of the professional. The goals of medicine (and dentistry) are to promote and preserve health if it is impaired, to restore health, and minimize suffering and distress. These goals are embodied in the word ‘prevention’. It is agreed that, with dental caries, this is basically what the dental profession is doing—and has always been doing. In many ways this has become a mantra—the dentists rightly claim that they are conducting prevention when recommending the population to eat less sugar, use fluorides, brush teeth, and when lesions occur, drill and fill, in order to restore the dentition and reduce pain and discomfort. Unfortunately, when dentists go for restoration—without ensuring that the patient understands how to control further caries lesion development—they indirectly stimulate the repair cycle, which ultimately may lead to loss of teeth (see Chapter 5). Sometimes the filling may be described as ‘treatment’ to contrast it with ‘prevention’. The dentist is paid for fillings (treatment) and minimally rewarded for so-called prevention.
Blánaid Daly, Paul Batchelor, Elizabeth Treasure, and Richard Watt
- Published in print:
- 2013
- Published Online:
- November 2020
- ISBN:
- 9780199679379
- eISBN:
- 9780191918353
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780199679379.003.0020
- Subject:
- Clinical Medicine and Allied Health, Dentistry
Oral cancer is one of the few conditions that dental professionals may encounter within their surgeries that can be fatal. It is therefore essential that ...
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Oral cancer is one of the few conditions that dental professionals may encounter within their surgeries that can be fatal. It is therefore essential that members of the dental team understand the epidemiology and natural history of the condition and possible options for prevention, screening, and treatment. From a public health perspective, oral cancer presents many interesting challenges. First, is the condition a public health problem? In this chapter the epidemiology of oral cancer will be reviewed to highlight the extent, trends, and impact of the condition. Second, what options exist to prevent the disease and how best can these be implemented? As we will discuss, although progress has been made in the treatment of the disease, survival rates have not improved substantially in recent decades (Cancer Research UK 2012; ONS 2005; Stell and McCormick 1985). The potential for screening of the condition has been extensively reviewed, and currently a national screening programme is not recommended due to a lack of evidence on effectiveness (Chamberlain 1993). Although various initiatives have recently attempted to coordinate and expand the prevention of oral cancer (Cancer Research UK 2005; British Dental Association 2000; NHS Scotland 2005), the preventive activities presently undertaken by the dental profession alone are unlikely to be successful. A clear need exists for a more comprehensive public health strategy to tackle the underlying causes of the disease in a coordinated and strategic fashion. This chapter will therefore outline the scope and detail of such a strategy. Oral and oropharngeal cancers commonly include cancer of the lip, tongue, mouth, oropharynx, piriform sinus, hypopharynx, and other ill-defined sites of the lip, oral cavity, and pharynx (ICD-10, C00–C06, C09– C10, and C12–C14). In the UK, oral cancer is the fifteenth most common cancer, accounting for around 2% of all new cases. In 2009 there were 6,236 new cases of oral cancer in the UK: 4,097 (66%) in men and 2,139 (34%) in women (Cancer Research UK 2012 ). The most commonly diagnosed type of oral cancers are cancer of the mouth and tongue, collectively accounting for 60% of cases in the UK.
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Oral cancer is one of the few conditions that dental professionals may encounter within their surgeries that can be fatal. It is therefore essential that members of the dental team understand the epidemiology and natural history of the condition and possible options for prevention, screening, and treatment. From a public health perspective, oral cancer presents many interesting challenges. First, is the condition a public health problem? In this chapter the epidemiology of oral cancer will be reviewed to highlight the extent, trends, and impact of the condition. Second, what options exist to prevent the disease and how best can these be implemented? As we will discuss, although progress has been made in the treatment of the disease, survival rates have not improved substantially in recent decades (Cancer Research UK 2012; ONS 2005; Stell and McCormick 1985). The potential for screening of the condition has been extensively reviewed, and currently a national screening programme is not recommended due to a lack of evidence on effectiveness (Chamberlain 1993). Although various initiatives have recently attempted to coordinate and expand the prevention of oral cancer (Cancer Research UK 2005; British Dental Association 2000; NHS Scotland 2005), the preventive activities presently undertaken by the dental profession alone are unlikely to be successful. A clear need exists for a more comprehensive public health strategy to tackle the underlying causes of the disease in a coordinated and strategic fashion. This chapter will therefore outline the scope and detail of such a strategy. Oral and oropharngeal cancers commonly include cancer of the lip, tongue, mouth, oropharynx, piriform sinus, hypopharynx, and other ill-defined sites of the lip, oral cavity, and pharynx (ICD-10, C00–C06, C09– C10, and C12–C14). In the UK, oral cancer is the fifteenth most common cancer, accounting for around 2% of all new cases. In 2009 there were 6,236 new cases of oral cancer in the UK: 4,097 (66%) in men and 2,139 (34%) in women (Cancer Research UK 2012 ). The most commonly diagnosed type of oral cancers are cancer of the mouth and tongue, collectively accounting for 60% of cases in the UK.
Mark Johnston
- Published in print:
- 2014
- Published Online:
- December 2014
- ISBN:
- 9780199756018
- eISBN:
- 9780199395255
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199756018.003.0005
- Subject:
- Philosophy, Philosophy of Mind
The main thesis is that sensory experience is not “predicative” but rather “presentational”, and hence cannot be properly modeled by propositional attitudes to the effect that such and such is the ...
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The main thesis is that sensory experience is not “predicative” but rather “presentational”, and hence cannot be properly modeled by propositional attitudes to the effect that such and such is the case. Indeed, the propostional attitude model not only (i) mischaracterizes the success conditions of experience, it also (ii) occludes the very thing that makes sensory experience epistemically distinctive. Once we see just how the object-directed and “perceiving-as” states make room for the distinctive epistemic significance of perceptual experience, the newly “discovered” propositional attitude—Exing that p—will be seen to be not only an ill-fitting, but an idle, wheel, both internally to the theory of perception and more broadly within epistemology. Experiences, understood as attentive sensory episodes, provide us with awareness of the truthmakers for what we often go on to immediately judge. We are thereby often in a postion to ratify our immediate perceptual judgments on the basis of what we have experienced. This is the epistemic virtue that has been occluded by the now dominant idea that perceptual experience is a non-factive relation to a propositional content. The factive attitude model, reminiscent of John McDowell’s view, is also shown to be an inadequate account of the kind of entitlement perceptual experience delivers. Facts are pleonastic, and are “etiolated” in a way that the things we perceive are not.Less
The main thesis is that sensory experience is not “predicative” but rather “presentational”, and hence cannot be properly modeled by propositional attitudes to the effect that such and such is the case. Indeed, the propostional attitude model not only (i) mischaracterizes the success conditions of experience, it also (ii) occludes the very thing that makes sensory experience epistemically distinctive. Once we see just how the object-directed and “perceiving-as” states make room for the distinctive epistemic significance of perceptual experience, the newly “discovered” propositional attitude—Exing that p—will be seen to be not only an ill-fitting, but an idle, wheel, both internally to the theory of perception and more broadly within epistemology. Experiences, understood as attentive sensory episodes, provide us with awareness of the truthmakers for what we often go on to immediately judge. We are thereby often in a postion to ratify our immediate perceptual judgments on the basis of what we have experienced. This is the epistemic virtue that has been occluded by the now dominant idea that perceptual experience is a non-factive relation to a propositional content. The factive attitude model, reminiscent of John McDowell’s view, is also shown to be an inadequate account of the kind of entitlement perceptual experience delivers. Facts are pleonastic, and are “etiolated” in a way that the things we perceive are not.