175,119 research outputs found

    General method of pattern classification using the two-domain theory

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    Human beings judge patterns (such as images) by complex mental processes, some of which may not be known, while computing machines extract features. By representing the human judgements with simple measurements and reducing them and the machine extracted features to a common metric space and fitting them by regression, the judgements of human experts rendered on a sample of patterns may be imposed on a pattern population to provide automatic classification

    Block design performance in the Williams syndrome phenotype: A problem with mental imagery?

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    Williams syndrome (WS) is a rare genetic disorder which, among other characteristics, has a distinctive cognitive profile. Non-verbal abilities are generally poor in relation to verbal abilities, but also show varying levels of ability in relation to each other. Performance on block construction tasks represents arguably the weakest non-verbal ability in WS. In this study we examined two requirements of block construction tasks in 21 individuals with WS and 21 typically developing (TD) control individuals. The Squares task, a novel two-dimensional block construction task, manipulated patterns by segmentation and perceptual cohesiveness to investigate the first factor, processing preference (local or global), and by obliqueness to examine the second factor, the ability to use mental imagery. These two factors were investigated directly by the Children?s Embedded Figures Test (CEFT; Witkin, Oltman, Raskin & Karp, 1971) and a mental rotation task respectively. Results showed that individuals with WS did not differ from the TD group in their processing style. However, the ability to use mental imagery was significantly poorer in the WS group than the TD group. This suggests that weak performance on the block construction tasks in WS may relate to an inability to use mental imagery

    Organisational Memetics?: Organisational Learning as a Selection Process

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    Companies are not only systems created and controlled by those who manage them but also self-organising entities that evolve through learning. Whereas an organism is a creation of natural replicators, genes, an organisation can be seen as a product of an alternative replicator, the meme or mental model, acting, like a gene, to preserve itself in an Evolutionary Stable System. The result is an organisation which self organises around a set of unspoken and unwritten rules and assumptions. Biological evolution is stimulated by environmental change and reproductive isolation; the process of punctuated equilibrium. Corporate innovation shows the same pattern. Innovations in products and processes occur in groups isolated from prevailing mental norms. Successful organic strains possess a genetic capability for adaptation. Organisations which wish to foster learning can develop an equivalent, mental capability. Unlike their biological counterparts they can exert conscious choice and puncture the memetic codes that seek to keep them stable; the mental models of individuals, and the strategies, paradigms and unwritten rules at the company level

    The Abduction of Disorder in Psychiatry

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    The evolutionary cornerstone of J. C. Wakefield's (1999) harmful dysfunction thesis is a faulty assumption of comparability between mental and biological processes that overlooks the unique plasticity and openness of the brain?s functioning design. This omission leads Wakefield to an idealized concept of natural mental functions, illusory interpretations of mental disorders as harmful dysfunctions, and exaggerated claims for the validity of his explanatory and stipulative proposals. The authors argue that there are numerous ways in which evolutionarily intact mental and psychological processes, combined with striking discontinuities within and between evolutionary and contemporary social/cultural environments, may cause non-dysfunction variants of many widely accepted major mental disorders. These examples undermine many of Wakefield's arguments for adopting a harmful dysfunction concept of mental disorder

    Use of Mental Imagery in Psychotherapy: A Critical Review

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    The paper presents arguments in favor of the use of mental imagery for therapeutic purposes. Several existing imagery approaches to psychotherapy are critically examined and suggestions for future inquiry are offered. The intimate relation between imagery and the affective-somatic processes is stressed

    Cognitive Load and Its Relationship with Mental Capacity in Accordance with Their Levels at Students of the Secondary Stage in Terms of Sweller Theory

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    The study aimed to identify the cognitive load and its relationshipwith mental capacity in accordance their levels at the students of the secondary stage in the terms of Sweller theory. The study sample consisted of (300) male and female eleventh and twelfth grade students from the leadership schools in Amman. The researcher used the cognitive load scale and the mental capacity scale.The results showed a high level of cognitive load in male and female, a high cognitive Load on students of scientific specialization rather than literary specialization, and that the mental capacity of the study sample in general is moderate, and that the mental capacity of students of scientific specialization is high compared to the mental capacity of students of literary specialization. In addition, that the association between higher mental capacity and cognitive load was higher in males than in females, and that the relationship between the mean mental capacity of both sexes with the cognitive load was statistically significant

    Generating Text from Functional Brain Images

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    Recent work has shown that it is possible to take brain images acquired during viewing of a scene and reconstruct an approximation of the scene from those images. Here we show that it is also possible to generate text about the mental content reflected in brain images. We began with images collected as participants read names of concrete items (e.g., “Apartment’’) while also seeing line drawings of the item named. We built a model of the mental semantic representation of concrete concepts from text data and learned to map aspects of such representation to patterns of activation in the corresponding brain image. In order to validate this mapping, without accessing information about the items viewed for left-out individual brain images, we were able to generate from each one a collection of semantically pertinent words (e.g., “door,” “window” for “Apartment’’). Furthermore, we show that the ability to generate such words allows us to perform a classification task and thus validate our method quantitatively

    A Global Workspace perspective on mental disorders

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    Recent developments in Global Workspace theory suggest that human consciousness can suffer interpenetrating dysfunctions of mutual and reciprocal interaction with embedding environments which will have early onset and often insidiously staged developmental progression, possibly according to a cancer model. A simple rate distortion argument implies that, if an external information source is pathogenic, then sufficient exposure to it is sure to write a sufficiently accurate image of it on mind and body in a punctuated manner so as to initiate or promote simililarly progressively punctuated developmental disorder. There can, thus, be no simple, reductionist brain chemical 'bug in the program' whose 'fix' can fully correct the problem. On the contrary, the growth of an individual over the life course, and the inevitable contact with a toxic physical, social, or cultural environment, can be expected to initiate developmental problems which will become more intrusive over time, most obviously according to some damage accumulation model, but likely according to far more subtle, highly punctuated, schemes analogous to tumorigenesis. The key intervention, at the population level, is clearly to limit such exposures, a question of proper environmental sanitation, in a large sense, a matter of social justice which has long been understood to be determined almost entirely by the interactions of cultural trajectory, group power relations, and economic structure, with public policy. Intervention at the individual level appears limited to triggering or extending periods of remission, as is the case with most cancers

    Mental Disorders - Chapter 6 of Counseling and the Demonic

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    Chapter 6 of Counseling and the Demonic by Rodger K Buffor
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