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81.
This paper questions the ethicality of commercial relationships between universities and external donors. By examining cases such as technology transfer and the outside funding of research interests, we identify possible conflicts of interest between the external provider of financial support and academic institutions. The reality today is that university administrators, who have significant decision-making powers, proactively seek large corporate sources of funding that may compromise academic values including academic freedom and the ability to make institutional decisions without the influence of commercial interests. For example, Coca-Cola and Pepsi-Cola have provided extensive funding to universities in return for exclusivity rights to market their product on campuses even though such products may not be healthy alternatives to other soft drinks. Pharmaceutical and biotechnology companies may have opposing interests to faculty and universities if the results of research do not meet the expectations of the sponsors. Curricula issues may be slanted to promote the interests of a corporation or other provider of outside funding. Corporate partnerships between universities and companies such as Nike raise ethical questions when students or other members of the campus community object to the acceptance of financial support from a company that allegedly practices anti-social labor practices in developing countries. On the other hand, corporate funding can be used to supplement diminishing financial resources available to academic institutions, especially for public universities. One benefit of external funding is that it supports pharmaceutical and technology-oriented research and development into new products and processes that have the potential to serve the public good. One cost of such funding arrangements is that the acceptance of financial support from commercial interests solely to market their products on campus restricts the choices available to students that should exist in a free market economy such as in the U.S. The ethicality of the relationship between universities and commercial interests is a matter of concern because of the potential influence of providers of external funds to universities that can compromise academic freedom and objective decision making.  相似文献   
82.
It has recently been argued that performers benefit from trauma (i.e., memorable challenges) during development. To deepen knowledge in this area, we explored perceived traumas in the development of 20 senior-international performers with a multimethods, temporal-based design. Results showed that perceived traumas were primarily sports based, recognized from onset of investment, associated with immediately negative but ultimately positive impact, and negotiated through skills that were brought to, rather than generated by, these experiences. The findings provide an interesting contrast to messages in other early trauma-focused research and promote focus on the process and mechanisms of responding to and recovering from traumatic experiences.  相似文献   
83.
Neuronal nicotinic acetylcholine receptors (nAChRs) are critical for higher order cognitive processes. Post-mortem studies suggest reductions in nAChRs (particularly the alpha(4)beta(2) subtype) with ageing and in Alzheimer's disease (AD). This study aimed to; (1) quantify nAChR distribution in vivo with 2-[18F]fluoro-A-85380 (2-FA) in 15 early AD patients compared to 14 age-matched, healthy controls (HC) and (2) correlate nAChR distribution with cognitive performance in both groups. All participants were non-smokers and underwent cognitive testing along with a dynamic PET scan after injection of 200 MBq of 2-FA. Brain regional 2-FA binding was assessed through a simplified estimation of Distribution Volume (DV(S)). The AD group differed significantly from HC on all cognitive measures employed, with impairments on measures of attention, working memory, language, executive function, visuospatial ability, verbal learning and verbal memory (p<.05). Contrary to post-mortem data this study found no evidence of in vivo nAChR loss in early AD despite significant cognitive impairment. Furthermore, no correlation between nAChR and cognitive performance was found for either group. The findings of the current study suggest preservation of nAChRs early in AD supporting previous studies. It is possible that while the clinical 2-FA PET method described here may be insensitive in detecting changes in early AD, such changes may be detected in more advanced stages of the illness.  相似文献   
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Two experiments examined whether normal and disabled readers differed in the utilization of rules in a paired associate learning task. Experiment 1 required children to learn symbol-word associates. Children were assigned to one of three conditions: nonrule, consistent rule, or inconsistent rule. When present, the rule was based on semantic opposites. Subjects benefited from having the rule, but disabled readers showed less improvement across four test blocks than both chronological age (CA) controls and reading age (RA) controls, particularly in the inconsistent condition. Experiment 2 required subjects to learn symbol-symbol associations in one of three conditions: nonrule, consistent rule, or inconsistent rule. When present, the rule specified the locations of a subsidiary figure in each symbol according to the pattern top-right, bottom-left. Disabled and normal readers did not differ in the nonrule condition where reliance on visual memory would be an effective strategy. Normal readers were superior to disabled readers in both rule conditions. In addition, disabled readers in the inconsistent rule condition were less able than normal readers to apply the rule in a generalization task where memory demands were reduced. Results supported the hypothesis that disabled readers have greater difficulty than normal readers inducing and/or using rules, particularly when they are inconsistent. It is suggested that difficulties in acquiring or using complex and inconsistent rules may be one important source of problems learning spelling-sound correspondence rules, which in English are complex and inconsistent.  相似文献   
87.
The aim of this paper is to present a practical model for investigating cognitive impairment which integrates the experimental-cogaitive-information processing-theory and the psychometric-intellectual-abilities-tradition in psychology to understanding cognitive functioning. It reviews developments in cognitive theory in terms of Processes, complex and simple, such as Intelligence and Information Processing, and Factors of attained Level and Learning ability in the Verbal and Performance modalities. The Savage Cognitive Impairment Model (SCIM) is outlined and types of cognitive impairment defined. Measures of cognitive impairment relevant to clinical practice and research are presented.  相似文献   
88.
A computational approach to cognition is developed that has both broad scope and precision. The theory is based on a few simple assumptions and draws its conclusions from an analysis of limits on computational activity. These limits are a delay limit and a processing power limit. The theory explains published findings on memory span, measurement of spatial numerosity (and subitization), total-time effects, and the behavior of RT curves for the Sternberg item recognition experiment.  相似文献   
89.
A rodent model of diencephalic amnesia, pyrithiamine-induced thiamine deficiency (PTD), was used to investigate the dynamic role of hippocampal and striatal acetylcholine (ACh) efflux across acquisition of a nonmatching-to-position (NMTP) T-maze task. Changes in ACh efflux were measured in rats at different time points in the acquisition curve of the task (early=day 1, middle=day 5, and late=day 10). Overall, the control group had higher accuracy scores than the PTD group in the latter sessions of NMTP training. During the three microdialysis sampling points, all animals displayed significant increases in ACh efflux in both hippocampus and striatum, while performing the task. However, on day 10, the PTD group showed a significant behavioral impairment that paralleled their blunted hippocampal--but not striatal--ACh efflux during maze training. The results support selective diencephalic-hippocampal dysfunction in the PTD model. This diencephalic-hippocampal interaction appears to be critical for successful episodic and spatial learning/memory.  相似文献   
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