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261.
Using a latent learning paradigm, the experiments examine two hypotheses of how rats solve place navigation tasks. According to associative theory, experience with all relevant cues is required for accurate navigation. According to cognitive mapping theory, animals can generate novel trajectories from knowledge of spatial relations of objects in the environment. Rats that had been placed on a platform, which was submerged in a pool of opaque water and was moved each day, were tested later for their ability to find the platform using only surrounding room cues. One 30-sec exposure to a platform location was effective in improving performance. Improvement was greatest when tests were given within minutes of placement, but facilitation was obtained for as long as 4 hr. Improved performance was obtained as soon as rats acquired the procedural aspects of the task but did not increase with subsequent practice. Improved performance was also obtained when pre-trained rats were tested in a novel environment. Despite the advantage conferred by exposure to the target platform, test swims were not accurate, placement-induced improvement was not as great as that following a single swimming trial, and placement combined with a swim resulted in best performance. The results suggest that rats use associative learning processes rather than cognitive mapping to solve place problems in a swimming pool.  相似文献   
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The factor structure of the Stunkard-Messick Eating Questionnaire (SMEQ) differs from that of the Dutch Eating Behavior Questionnaire (DEBQ). Using students and members of a weight watchers club, we factor-analyzed responses to the SMEQ and produced a solution which was different from that obtained by Stunkard and Messick, but which had some similarities to the factor structure of the DEBQ. “External” taste items and “internal” hunger items loaded on the same factor, a finding inconsistent with externality theory but consistent with the common sense notion of appetite strength. Although our finding suggests factor instability of the SMEQ, the stability of the DEBQ appears to be the consequence of a restricted range of DEBQ items compared with SMEQ items. Financial support for this research was given by Lilly Industries.  相似文献   
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Group therapy may be a useful treatment modality for women who have been sexually abused as children. The group described here involved patients referred to the British NHS psychiatric service. This closed time-limited group was run by male and female cotherapists. Reasons are advanced for advocating a mixed-sex cotherapy team. The progress of the group is described. Issues of selection, preparatory individual therapy, further individual therapy following the group, and stress on the therapists are discussed. It is suggested that the mode of referral influences the severity of presenting problems and the level of additional support likely to be required by group members. The participants' views concerning the most helpful components of therapy are recorded and self-report measures are considered alongside the assessments of the therapists.  相似文献   
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Social constructionism is the view that many of the abstract quantities, our relations according to these, and the relationships of evelyday life, are human made processes and contexts into which we have been born, or into which we can gain access by our credentials in society. Social constructionism has investigated personhood, male-female gender roles, sexuality, and the dzferent conceptualisations of appropriate social roles and emotional displays. All fields of science, study and debate are seen as historical processes occurring in human contexts of supporters and dissenters who gather round in a complex changing pattern. Explanations are not regarded as indisputable facts or truths, but only approximations, or part of a discourse between schools of thought.  相似文献   
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This case history describes the attempted suicide by jumping in front of a London Underground train of a man with advanced HIV disease. It illustrates the complex relationship between HIV disease and suicidal behaviour. Although the attempt was made by a man with AIDS, it is by no means evident that this disease was the sole or even the primary cause of his wish to die. This account is also interesting because of the unusual method used, the sudden onset of suicidal feelings and the patient's interpretation of the reason for his survival.  相似文献   
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Book reviews     
Form and Validity in Indian Logic. Vijay Bharadwaja, 1990. Simla, Indian Institute of Advanced Study. 127 pp.

The Word and The World: India's Contribution to the Study of Language. Bimal Krishna Matilal, 1990 Delhi, Oxford University Press ix+189pp., Rs175.00

The Basic Ways of Knowing. Govardhan P. Bhatt, 1989 Delhi, Banarasidas xxviix+435 pp.

The Quest for Man. J. Van Nispen & D. Tiemersma (Eds), 1991 Assen/Maastricht, Van Gorcum ix+203 pp., Dfl39.50

Muslim‐Christian Encounters: Perceptions and Misperceptions. William Montgomery Watt, 1991 London, Routledge 164 pp.

Socrates in Mediaeval Arabic Literature. Islamic Philosophy, Theology and Science, Texts and Studies Vol. X. Ilai Alon, 1991. Leiden: E. J. Brill/Jerusalem, The Magnes Press. pp. 198, US$50

Tsung‐mi and the Sinification of Buddhism. Peter N. Gregory, 1991 Princeton, Princeton University Press 368 pp., US$49.50

Modern Civilization: A Crisis of Fragmentation. S. C. Malik, 1989. New Delhi, Abhinav Publications. 182 pp., Rs 150.00

Nature in Asian Traditions of Thought: Essays in Environmental Philosophy. J. Baird Callicott & Roger T. Ames (Eds), 1989 Albany, NY, State University of New York Press 335+xxi pp., US$16.95  相似文献   

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