Some claim that Non- reductive Physicalism is an unstable position, on grounds that NRP either collapses into reductive physicalism, or expands into emergentism of a robust or ‘strong’ variety. I argue that this claim is unfounded, by attention to the notion of a degree of freedom—roughly, an independent parameter needed to characterize an entity as being in a state functionally relevant to its law-governed properties and behavior. I start by distinguishing three relations that may hold between the degrees of freedom (...) needed to characterize certain special science entities, and those needed to characterize their composing physical entities; these correspond to what I call ‘reductions’, ‘restrictions’, and ‘eliminations’ in degrees of freedom. I then argue that eliminations in degrees of freedom, in particular—when strictly fewer degrees of freedom are required to characterize certain special science entities than are required to characterize their composing physical entities—provide a basis for making sense of how certain special science entities can be both physically acceptable and ontologically irreducible to physical entities. (shrink)

Some claim that Non-reductive Physicalism is an unstable position, on grounds that NRP either collapses into reductive physicalism, or expands into emergentism of a robust or ‘strong’ variety. I argue that this claim is unfounded, by attention to the notion of a degree of freedom—roughly, an independent parameter needed to characterize an entity as being in a state functionally relevant to its law-governed properties and behavior. I start by distinguishing three relations that may hold between the degrees of freedom needed (...) to characterize certain special science entities, and those needed to characterize their composing physical entities; these correspond to what I call ‘reductions’, ‘restrictions’, and ‘eliminations’ in degrees of freedom. I then argue that eliminations in degrees of freedom, in particular—when strictly fewer degrees of freedom are required to characterize certain special science entities than are required to characterize their composing physical entities—provide a basis for making sense of how certain special science entities can be both physically acceptable and ontologically irreducible to physical entities. (shrink)

Recent years have seen renewed interest in the emergence issue. The contemporary debate, in contrast with that of past times, has to do not so much with the mind–body problem as with the relationship between the physical and other domains; mostly with the biological domain. One of the main sources of this renewed interest is the study of complex and, in general, far-from-equilibrium self-preserving systems, which seem to fulfil one of the necessary conditions for an entity to be emergent; namely, (...) that its causal powers are not predictable from the causal powers of basic physical properties. However, I argue that much of the current emergentism debate has misfired by focusing on the interpretation of self-maintaining systems. In contrast, I claim that if we want to find emergent properties, we should look not at complex systems, but at selection (natural selection, in particular). I argue that selection processes make the causal world ‘exuberant’ by making non-physical functional and relational properties enter the causal web of the world. (shrink)

The frequent occurrence of comorbidity has brought about an extensive theoretical debate in psychiatry. Why are the rates of psychiatric comorbidity so high and what are their implications for the ontological and epistemological status of comorbid psychiatric diseases? Current explanations focus either on classification choices or on causal ties between disorders. Based on empirical and philosophical arguments, we propose a conventionalist interpretation of psychiatric comorbidity instead. We argue that a conventionalist approach fits well with research and clinical practice and resolves (...) two problems for psychiatric diseases: experimenter’s regress and arbitrariness. (shrink)

Cognition played a pivotal role in the acceleration of technological innovation during the Industrial Revolution. Growing affluence may have provided favourable environmental conditions for a boost in cognition, enabling individuals to tackle more complex problems. Dynamical systems thinking may provide useful tools to describe sudden transitions like the Industrial Revolution, by modelling the recursive feedback between psychology and environment.

In clinical medicine, a diagnosis can offer an explanation of a patient's symptoms by specifying the pathology that is causing them. Diagnoses in psychiatry are also sometimes presented in clinical texts as if they pick out pathological processes that cause sets of symptoms. However, current evidence suggests the possibility that many diagnostic categories in psychiatry are highly causally heterogeneous. For example, major depressive disorder may not be associated with a single type of underlying pathological process, but with a range of (...) different causal pathways, each involving complex interactions of various biological, psychological, and social factors. This paper explores the implications of causal heterogeneity for whether psychiatric diagnoses can be said to serve causal explanatory roles in clinical practice. I argue that while they may fall short of picking out a specific cause of the patient's symptoms, they can nonetheless supply different sorts of clinically relevant causal information. In particular, I suggest that some psychiatric diagnoses provide negative information that rules out certain causes, some provide approximate or disjunctive information about the range of possible causal processes, and some provide causal information about the relations between the symptoms themselves. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:About and Beyond Comorbidity:Does the Crisis of the DSM Bring on a Radical Rethinking of Descriptive Psychopathology?Massimiliano Aragona (bio)Keywordscomorbidity, nosography, phenomenology, philosophy of scienceThe problem of psychiatric comorbidity is part of a series of difficulties of the current diagnostic system which at once were considered as a consequence of the way the system itself is organized (Aragona 2006). It was then believed that a Kuhnian reformulation of the contemporary (...) debate on the problems of the psychiatric diagnosis was very useful because it allowed clarification in a comprehensive picture of the many rivulets of conceptual research in that field.In their comments Zachar (2009) and Banzato (2009) seem to agree with my analysis of psychiatric comorbidity (Aragona 2009a) when it stresses that abnormally high frequencies of co-occurrence are to be explained, in important respects, as a consequence of the way mental disorders are operationalized in the Diagnostic and Statistical Manual of Mental Disorders (DSM; also showing the importance of conceptual clarification to deal with this sort of only apparently pure factual problems). On the contrary, they are both unconvinced of the appropriateness and/or fruitfulness of the use of the Kuhnian technical terms and theory in this context.It could be said that the major aim of the paper was to let clinicians understand the effect of conceptual decisions on what would otherwise seem as a simple empirical finding (in this case, high levels of comorbidity), and that this result seems to be achieved in any case, thus minimizing the importance of a disagreement about the philosophical terms as a pure terminological dispute. Nevertheless, in my work the Kuhnian model had a significant role in the clarification of this matter and it also suggests to the reader a range of possible consequences that are not trivial (Zachar, for example, says to be skeptical about the possibility of a crisis and also about the possibility that a new paradigm could eliminate what I call the [End Page 29] comorbidity anomaly). As a consequence, some of the Kuhnian concepts that seemed to be at odds in this context have to be considered in detail to justify my analysis and its consequences. For reasons of space, I avoid a point-by-point reply to all the comments and I concentrate my discussion on three main points. First, I discuss the background of Kuhn's definition of terms such as anomaly and paradigm, as well as my own reasons for using them. In doing so the details of the psychiatric items under study that I wanted to highlight through the use of these philosophical concepts should emerge more clearly. Second, I discuss the problem of having distinguished between artifactual and real comorbidity. Third, I reconsider some of these problems, looking for their implications for future psychopathological research.Anomalies and ParadigmsBanzato (2009) stresses that comorbidity cannot be a truly Kuhnian anomaly because it is an anticipated side effect of the initial setup of the DSM, and not some unexpected discovery that violates the paradigm-induced expectation. This is a basically correct account of the most known version of Kuhnian anomalies; that is, the tale of some evident nature's failure to conform to clear paradigm expectations, which immediately forces researchers to recognize its importance as a possible source of crisis. However, as is the case for many other Kuhnian terms, he discussed anomalies in several scripts and there are other possible versions of its meaning. In particular, Kuhn (1977, XVII) highlighted that only in very rare cases are anomalies completely unexpected and come out of blue to announce an imminent crisis that leads to a large revolution. More frequently, scientific revolutions are much more smaller, like the discovery of oxygen, and in these cases the process is so gradual that historians find it difficult to say exactly when a discovery was made and who did it. Even in these much smaller cases the usual prelude to changes of this sort is the awareness of anomaly, but here anomalies are not extraordinary events; rather, they are "countless discrepancies between theory and experiment [that] during the course of his career, every natural scientist again and again notices and passes by" (Kuhn... (shrink)

This paper explores the fundamental ideas that have motivated the idea of emergence and the movement of emergentism. The concept of reduction, which lies at the heart of the emergence idea is explicated, and it is shown how the thesis that emergent properties are irreducible gives a unified account of emergence. The paper goes on to discuss two fundamental unresolved issues for emergentism. The first is that of giving a “positive” characterization of emergence; the second is to give a coherent (...) explanation of how “downward” causation, a central component of emergentism, is able to avoid the problem of overdetermination. (shrink)

Cramer et al. make a good case for reconceptualizing comorbid psychopathologies in terms of complex network theory. We suggest the need for an extension of their network model to include reference to latent causes. We also draw attention to a neglected approach to theory appraisal that might usefully be incorporated into the methodology of network theory.

Some critics argue that the types of psychiatric diagnosis found in the Diagnostic and Statistical Manual of Mental Disorders and International Classification of Disease are superfluous and should be abandoned. These are known as categorical polythetic psychiatric diagnoses. To receive a categorical polythetic psychiatric diagnosis an individual need only exhibit some, rather than all, of the symptoms on the diagnostic criteria. Consequently, categorical polythetic psychiatric diagnoses only associate an individual with a range of symptoms rather than specify which symptoms they (...) have. Drawing on Giere’s account of scientific models, I portray categorical polythetic psychiatric diagnoses as abstract models that guide the building of less abstract models. These models can specify which symptoms a particular individual has. Additionally, categorical polythetic psychiatric diagnoses can guide investigation of symptoms towards difficult to spot symptoms, guide investigation towards changing symptoms, and guide investigation towards how symptoms manifest. These important roles mean categorical polythetic psychiatric diagnoses should not be abandoned. (shrink)

Pragmatic difficulties are considered a hallmark of autism spectrum conditions (ASC), but remain poorly understood. We discuss and evaluate existing hypotheses regarding the literalism of ASC individuals, that is, their tendency for literal interpretations of non‐literal communicative intentions. We present evidence that reveals a developmental stage at which neurotypical children also have a tendency for literalism and suggest an explanation for such behaviour that links it to other behavioural, rule‐following, patterns typical of that age. We discuss evidence showing that strict (...) adherence to rules is also widespread in ASC, and suggest that literalism might be linked to such rule‐following behaviour. (shrink)

The pivotal problem of comorbidity research lies in the psychometric foundation it rests on, that is, latent variable theory, in which a mental disorder is viewed as a latent variable that causes a constellation of symptoms. From this perspective, comorbidity is a (bi)directional relationship between multiple latent variables. We argue that such a latent variable perspective encounters serious problems in the study of comorbidity, and offer a radically different conceptualization in terms of a network approach, where comorbidity is hypothesized to (...) arise from direct relations between symptoms of multiple disorders. We propose a method to visualize comorbidity networks and, based on an empirical network for major depression and generalized anxiety, we argue that this approach generates realistic hypotheses about pathways to comorbidity, overlapping symptoms, and diagnostic boundaries, that are not naturally accommodated by latent variable models: Some pathways to comorbidity through the symptom space are more likely than others; those pathways generally have the same direction (i.e., from symptoms of one disorder to symptoms of the other); overlapping symptoms play an important role in comorbidity; and boundaries between diagnostic categories are necessarily fuzzy. (shrink)

Our concept of disorder is changing. This causes problems for projects of descriptive conceptual analysis. Conceptual change means that a criterion that was necessary for a condition to be a disorder at one time may cease to be necessary a relatively short time later. Nevertheless, some conceptually based claims will be fairly robust. In particular, the claim that no adequate account of disorder can appeal only to biological facts can be maintained for the foreseeable future. This is because our current (...) concept of disorder continues to be laden with ethical and political values in multiple ways. (shrink)

Typically, although it’s notoriously hard to define, autism has been represented as a biologically-based mental disorder that can be usefully investigated by biomedical science. In recent years, ho...

Psychiatric diagnoses such as Autism Spectrum Disorder (ASD) are primarily attributed on the basis of behavioral criteria. The aim of most of the biomedical research on ASD is to uncover the underlying mechanisms that lead to or even cause pathological behavior. However, in the philosophical and sociological literature, it has been suggested that autism is also to some extent a ‘social construct’ that cannot merely be reduced to its biological explanation. We show that a one-sided adherence to either a biological (...) or a social explanation leads to a moral dilemma, a Catch-22, for autistics and for those living with them. Such explanations close the space for self-identifying as autistic and at the same time being considered to be in good mental health. They foreclose the possibility of making sense of the lived experience of (and with) autistics. In this paper we argue that such lack of space for moral imagination inherently leads to scientific stalemate. We propose that one can only go beyond this stalemate by taking an ethical stance in theorizing, one that enables better intersubjective understanding. Only on such a view can behavior and biology be linked without either disconnecting them or reducing the one to the other. (shrink)