Dialectic,the Dictum de Omni and Ecthesis

In this paper, we provide a detailed critical review of current approaches to ecthesis in Aristotle’s Prior Analytics, with a view to motivate a new approach, which builds upon previous work by Marion & Rückert (2016) on the dictum de omni. This approach sets Aristotle’s work within the context of dialectic and uses Lorenzen’s dialogical logic, hereby reframed with use of Martin-Löf's constructive type theory as ‘immanent reasoning’. We then provide rules of syllogistic for the latter, and provide proofs of e-conversion, Darapti and Bocardo and e-subalternation, while showing how close to Aristotle’s text these proofs remain.     

Dialogical Connexive Logic

Synthese - Many of the discussions about conditionals can best be put as follows:can those conditionals that involve an entailment relation be formulatedwithin a formal system? The reasons for the...     

The Early Presentation of Dementia in People with Down Syndrome: a Systematic Review of Longitudinal Studies

Adults with Down syndrome (DS) are at a very high risk of developing early onset Alzheimer’s disease (AD) due to trisomy of chromosome 21. AD is preceded by a prolonged prodromal “pre-clinical” phase presenting with clinical features that do not fulfil the diagnostic criteria for AD. It is important to clinically characterise this prodromal stage to help early detection of the disease as neuropathology of AD is almost universal by the fifth decade in DS. There is a lack of knowledge of the trajectory of decline associated with the onset of dementia in this population and early signs may be overlooked or misdiagnosed, negatively affecting the quality of life of those affected and the use of early pharmacological or psychosocial interventions. The objective of this systematic review is to evaluate the published literature on longitudinal data in order to identify the cognitive and behavioural changes occurring during the prodromal and early stages of AD in this population. Fifteen peer-reviewed articles met the inclusion criteria, including a total number of 831 participants, with the duration between baseline and follow up varying from 1 year to 47 years. Results suggest that, compared to the general population for which short-term (episodic) memory loss is the most common indicator associated with the onset of AD, in people with DS, executive dysfunction and Behavioural and Psychological Symptoms of Dementia (BPSD) are commonly observed during pre-clinical and early stages and may precede memory loss. The review highlights the importance of using a broad spectrum of assessments in the context of heterogeneity of symptoms. Theoretical and practical implications are discussed, as well as the need for further research.     

The Effects of Terrorism: The Aftermath of the London Terror Attacks1

The July 2005 London bombings highlight prevailing terrorist threats to the UK. The present study addressed the psychological response of a community indirectly exposed to the attacks. Using structural equation modeling (SEM), specific hypotheses examined associations between coping mechanisms (resilience, religious faith), emotions, and risk outcomes. Qualitative content analysis demonstrated the complexity of responses to terrorism. SEM analysis showed that resilience helped attenuate the effect of negative emotions; negative emotions heightened risk judgments; and respondents higher on religious faith displayed more positive emotions regarding the attacks. The content analysis supplemented quantitative results. Combined, these results highlight the importance of conveying accurate risk appraisals proportionate to the threat, as well as consideration of psychological operations, including resilience and religious faith.     

Towards a semantics for the artifactual theory of fiction and beyond

In her book Fiction and Metaphysics (1999) Amie Thomasson, influenced by the work of Roman Ingarden, develops a phenomenological approach to fictional entities in order to explain how non-fictional entities can be referred to intrafictionally and transfictionally, for example in the context of literary interpretation. As our starting point we take Thomasson’s realist theory of literary fictional objects, according to which such objects actually exist, albeit as abstract and artifactual entities. Thomasson’s approach relies heavily on the notion of ontological dependence, but its precise semantics has not yet been developed. Moreover, the modal approach to the notion of ontological dependence underlying the Artifactual Theory has recently been contested by several scholars. The main aims of this paper are (i) to develop a semantic approach to the notion of ontological dependence in the context of the Artifactual Theory of fiction, and in so doing bridge a number of philosophical and logical gaps; (ii) to generalize Thomasson’s categorial theory of ontological dependence by reconstructing ontological categories of entities purely in terms of different structures of ontological dependence, rather than in terms of the basic kinds of entities the categorical entities depend on.     

Context-Sensitivity in Jain Philosophy: A Dialogical Study of Siddharṣigaṇi’s <Emphasis Type="Italic">Commentary on the Handbook of Logic</Emphasis>

In classical India, Jain philosophers developed a theory of viewpoints (naya-vāda) according to which any statement is always performed within and dependent upon a given epistemic perspective or viewpoint. The Jainas furnished this epistemology with an (epistemic) theory of disputation that takes into account the viewpoint in which the main thesis has been stated. The main aim of our paper is to delve into the Jain notion of viewpoint-contextualisation and to develop the elements of a suitable logical system that should offer a reconstruction of the Jainas’ epistemic theory of disputation. A crucial step of our project is to approach the Jain theory of disputation with the help of a theory of meaning for logical constants based on argumentative practices called dialogical logic. Since in the dialogical framework the meaning of the logical constants is given by the norms or rules for their use in a debate, it provides a meaning theory closer to the Jain context-sensitive disputation theory than the main-stream formal model-theoretic semantics.     

Mental development

An attempt has been made to show how radically object relations theory departs from linear and biological models of development. The mind, it seems, is in a constant state of ebb and flow, moving at times towards development, and on other occasions regressing from it. Development seems to occur only when there are appropriate affective links between the structures of the mind. These links apparently need to be at the love-admiration end of the affective spectrum, so that centripetal forces predominate over centrifugal ones. It is this process of moving from fragmentation to integration, from alienation to responsibleness on the spatial plane, and from hatred to love on the affective plane that we tend to call development.     

Career Stage Effects on Job Characteristic–Job Satisfaction Relationships Among Guest Worker Salespersons

In this study, we propose and test the moderator roles of career stages on the job characteristics–job satisfaction relationships among guest worker salespersons in Saudi Arabia. Due to the severe shortage of indigenous labor, Saudi Arabia brings in foreign workers as guest workers from various countries of the world. These foreign workers meet the human resource needs of both local and foreign companies. As expected, findings suggest that job autonomy, job identity, and job feedback have a stronger influence on guest workers’ job satisfaction during the later stages of their career than during the early career stages. Of all the variables we tested, only the influence of job variety on job satisfaction does not vary across career stages. In general, the results indicate that managers are well advised to take into account guest worker salespersons’ career stages when managing job characteristics.