M. Cristina Amoretti

The general concept of mental disorder specified in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders is definitional in character: a mental disorder might be identified with a harmful dysfunction. The manual also contains the explicit claim that each individual mental disorder should meet the requirements posed by the definition. The aim of this article is two-fold. First, we shall analyze the definition of the superordinate concept of mental disorder to better understand what necessary criteria actually characterize such a concept. Second, we shall consider the concepts of some individual mental disorders and show that they are in tension with the definition of the superordinate concept, taking pyromania and narcissistic personality disorder as case studies. Our main point is that an unexplained and not-operationalized dysfunction requirement that is included in the general definition, while being systematically violated by the diagnostic criteria of specific mental disorders, is a logical error. Then, either we unpack and operationalize the dysfunction requirement, and include explicit diagnostic criteria that can actually meet it, or we simply drop it.

Come è emerso dall’analisi filosofica e dalla ricerca nelle scienze cogni- tive, la maggior parte dei concetti, tra cui molti concetti medici, esibisce degli “effetti prototipici” e non riesce ad essere definita nei termini di condizioni necessarie e sufficienti. Questo aspetto rappresenta un problema per la pro- gettazione di ontologie in informatica, poiché i formalismi adottati per la rap- presentazione della conoscenza (a partire da OWL – Web Ontology Langua- ge) non sono in grado di rendere conto dei concetti nei termini dei loro tratti prototipici. Nel presente articolo ci concentriamo sulla classe dei disordini mentali facendo riferimento alle descrizioni che ne vengono date nel DSM-5. L’idea è quella di proporre un approccio ibrido, in cui i formalismi delle ontologie sono combinati a una rappresentazione geometrica della conoscenza basata sugli spazi concettuali.

As it emerged from philosophical analyses and cognitive research, most concepts exhibit typicality effects, and resist to the efforts of defining them in terms of necessary and sufficient conditions. This holds also in the case of many medical concepts. This is a problem for the design of computer science ontologies, since knowledge representation formalisms commonly adopted in this field (such as, in the first place, the Web Ontology Language - OWL) do not allow for the representation of concepts in terms of typical traits. The need of representing concepts in terms of typical traits concerns almost every domain of real world knowledge, including medical domains. In particular, in this article we take into account the domain of mental disorders, starting from the DSM-5 descriptions of some specific disorders. We favour a hybrid approach to concept representation, in which ontology oriented formalisms are combined to a geometric representation of knowledge based on conceptual space. As a preliminary step to apply our proposal to mental disorder concepts, we started to develop an OWL ontology of the schizophrenia spectrum, which is as close as possible to the DSM-5 descriptions.

In the present paper, we shall discuss the notion of prototype and show its benefits. First, we shall argue that the prototypes of common-sense concepts are necessary for making prompt and reliable categorisations and inferences. However, the features constituting the prototype of a particular concept are neither necessary nor sufficient conditions for determining category membership; in this sense, the prototype might lead to conclusions regarded as wrong from a theoretical perspective. That being said, the prototype remains essential to handling most ordinary situations and helps us to perform important cognitive tasks. To exemplify this point, we shall focus on disease concepts. Our analysis concludes that the prototypical conception of disease is needed to make important inferences from a practical and clinical point of view. Moreover, it can still be compatible with a classical definition of disease, given in terms of necessary and sufficient conditions. In the first section, we shall compare the notion of stereotype, as it has been introduced in philosophy of language by Hilary Putnam, with the notion of prototype, as it has been developed in the cognitive sciences. In the second section, we shall discuss the general role of prototypical information in cognition and stress its centrality. In the third section, we shall apply our previous discussion to the specific case of medical concepts, before briefly summarising our conclusions in section four.

According to the minimal version of the traditional analysis of knowledge, there are (at least) three necessary components to knowledge, that is, truth, belief and justification. In this paper we will argue that even in a global sceptical scenario, all three conditions minimally necessary for knowledge can be satisfied. In particular, we will focus on the justification requirement and analyse two “traditional” theories of justification, i.e., coherentism and foundationalism, as well as a more “innovative” one, i.e., reliabilism. Then, we will conclude that if we want to continue to claim that, in a global sceptical scenario, a cognitive subject does not know (almost) anything, we should recognise that she may still have justified true beliefs, and we should, therefore, look elsewhere for the reasons why she lacks knowledge.

La discussione generale sulla filosofia della scienza contemporanea è complicata dal numero e dall’eterogeneità delle scienze, mentre lo studio di temi specifici porta inevitabilmente a dissertazioni specialistiche che mancano nel dare ragione della trama di senso sottostante. Questo Piccolo trattato di epistemologia intende occupare uno spazio vuoto, proponendo alcuni temi chiave per la comprensione dei meccanismi alla base della conoscenza scientifica: i rapporti tra filosofia e scienze, siano esse naturali o umane; la complessa relazione tra fatti e valori; la distinzione tra scoperta e giustificazione; la necessità di un discorso etico sulla ricerca, che chiami in causa categorie come fiducia, empatia, altruismo ed egoismo. Con un approccio chiaro e rigoroso, il volume intende rivolgersi a quell’ampia fascia di pubblico interessata alle tematiche centrali dell’epistemologia, della filosofia e delle scienze.

This volume breaks new grounds by bringing together a great variety of innovative contributions on triangulation, epistemology, and mind. The notion of triangulation, developed by Donald Davidson during the last two decades of his life, has changed our understanding of the relationship between subjective, intersubjective, and objective, and shed new light on concepts such as externalism, internalism, communication, interpretation, and language. At the same time, however, it has been strongly criticized for several aspects. The papers collected in this volume written by established contributors aim to provide new insights into the contemporary debate on triangulation. The upshot is not only a deeper understanding of Davidson s ideas but also a new appreciation of some central problems of epistemology and the philosophy of mind with regard to adjoining disciplines such as, for instance, cognitive sciences and the philosophy of language."

Reason and rationality represent crucial elements of the self-image of human beings and have unquestionably been among the most debated issues in Western philosophy, dating from ancient Greece, through the Middle Ages, and to the present day. Many words and thoughts have already been spent trying to define the nature and standards of reason and rationality, what they could or ought to be, and under what conditions something can be said to be rational. This volume focuses instead on the relationships of reason and rationality to some relevant specific topics, i.e., science, knowledge, gender, politics, ethics, religion, aesthetics, language, logic, and metaphysics, trying to uncover and clarify both the connections and differences in their various characterisations and uses.