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C. H. Bennett V. L. Scahill D. P. Griffiths N. J. Mackintosh 《Learning & behavior》1999,27(3):333-345
Preexposure to two compound flavors (AX and BX) typically enhances their discriminability: An aversion conditioned to AX will generalize less to BX, especially if the preexposure regime has involved alternated presentations of AX and BX rather than presenting all AX trials before BX trials (or vice versa). One possible explanation of this finding is that alternating preexposure establishes inhibitory associations between the two unique features A and B, thus counteracting the generalization produced by excitatory associations between X and A and between X and B, which might result in either the retrieval of B on a conditioning trial to AX, or the retrieval of A on a test trial to BX. Three experiments on flavor aversion conditioning in rats tested these predictions. Experiment 1 suggested that the more important of these excitatory associations was that which allowed X to retrieve A on the test trial to BX. Experiment 2 suggested that the more important inhibitory association was that which allowed B to inhibit the representation of A on this test trial. Experiment 3 provided direct evidence of the role of this inhibitory B⊣A association. 相似文献
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Dr Joan Solomon 《Research in Science Education》1998,28(1):153-167
Teaching technology without reference to the human need which calls for it, not only gives students the wrong idea about the
nature of technology, it also hides the importance of the testing of artifacts for operation in the relevant environment.
The research reported in this paper began with the trialing of stories designed to show the social need which triggered new
invention, in the appropriate period of history, through the eyes of contemporary children of our pupils' age. The pupils
were asked to design their working models through drawings, to construct them, and then to test and evaluate them. The model
used to understand the interplay between the ideas in the minds of pupils, and the selection process which decided on their
worthiness, is one drawn from evolutionary epistemology. Data shows that some elementary school children do recognise the
mental nature of the design activity as the combination of parts of remembered mechanisms, and the grounds for selection as
fitness for the job in the chosen environment. This approach goes some way towards distinguishing aspects of technological
education from scientific education, including the high value accorded to creativity and personal invention in technology. 相似文献
76.
Teaching Mathematics: Ritual, Principle and Practice 总被引:1,自引:0,他引:1
Yvette Solomon 《Journal of Philosophy of Education》1998,32(3):377-390
One of the criticisms of standard teaching practices is that they support merely 'ritual' as opposed to 'principled' knowledge, that is, knowledge which is procedural rather than being founded on principled explanation. This paper addresses issues and assumptions in current debate concerning the nature of mathematical knowledge, focusing on the ritual/principle distinction. Taking a discussion of centralism in logic and mathematics as its start-point, it seeks to resolve these issues through an examination of mathematics as a community of practice and the teacher's role as epistemological authority in inducting pupils into such practices. 相似文献
77.
ObjectiveTo present the need and plan for development of a General Comment for the UN Convention on the Rights of the Child Article 19 which has the potential to transform and advance child protection through the infusion of a child rights approach.MethodsThe Committee on the Rights of the Child (Committee) authorized ISPCAN and IICRD to draft a General Comment for CRC Article 19 (GC19) and to introduce implementation supports. An international working group (GC19WG), Expert Advisory Panel (EAP), and GC19 Focal Group of Committee members (GC19 CRC FG) have been organized to help guide and carry out the program of development. Analyses of relevant histories and knowledge, including effective and promising child protection strategies, are being applied to guide formulation of the GC and high priority implementation components. Consultations on the draft and supportive products will be conducted in cooperation with UNICEF, WHO, the NGO Group for the CRC, and other NGOs.Advice is to be solicited from interested parties and organizations in person and through distance communication throughout the world.ResultsIn addition to the GC19, numerous implementation supports will be planned and some will be produced and piloted during the program of development. Under consideration are an implementation guide and resources; commentary; accountability models, indicators, measures and evaluation systems; a clearing house and resource website; a child-appropriate version of GC19; and education/training curricula and programs.Practice implicationsGC19 has the potential to transform child protection by fostering a paradigm shift in its conceptualization, theory, research, and practice. Article 19 encourages an interpretation and application beyond narrow child protection conceptualizations and practices which have been found seriously inadequate. The General Comment can advance effective prevention of maltreatment and protection of personal security by promoting the child's rights, well-being, health, and development in all aspects of child protection. GC19 will provide support to the Committee on the Rights of the Child in its monitoring and guiding functions, and to States Parties, professionals, and civil society agents concerned with the protection and well-being of children. 相似文献
78.
Whilst an academic working in the arts may have been appointed as a consequence of artistic accomplishment and a capacity to teach, the research that underpins such work is an intrinsic part of its production and also needs to be recognised. In Australia, the ability of the artist‐academic to translate research into a form that is respected and rewarded is an issue of contention. This paper gathers responses to this issue. Perceptions of and attitudes to creative work as research are canvassed alongside life decisions arising from those perceptions and attitudes. This research occurs in the context of a new Australian framework for the evaluation of research. This framework offers some recognition of the research that supports creative practice. Thus, the long‐standing experience of compromise reported by the Australian artist‐academics interviewed for this study are discussed alongside new policies that seek to construct methodologies for its amelioration. 相似文献
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80.
Saleh A. Al-Abood Simon J. Bennett Francisco Moreno Hernandez Derek Ashford Keith Davids 《Journal of sports sciences》2013,31(3):271-278
We assessed the effects on basketball free throw performance of two types of verbal directions with an external attentional focus. Novices ( n = 16) were pre-tested on free throw performance and assigned to two groups of similar ability ( n = 8 in each). Both groups received verbal instructions with an external focus on either movement dynamics (movement form) or movement effects (e.g. ball trajectory relative to basket). The participants also observed a skilled model performing the task on either a small or large screen monitor, to ascertain the effects of visual presentation mode on task performance. After observation of six videotaped trials, all participants were given a post-test. Visual search patterns were monitored during observation and cross-referenced with performance on the pre- and post-test. Group effects were noted for verbal instructions and image size on visual search strategies and free throw performance. The 'movement effects' group saw a significant improvement in outcome scores between the pre-test and post-test. These results supported evidence that this group spent more viewing time on information outside the body than the 'movement dynamics' group. Image size affected both groups equally with more fixations of shorter duration when viewing the small screen. The results support the benefits of instructions when observing a model with an external focus on movement effects, not dynamics. 相似文献