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21.
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In Experiment 1, male rats were exposed to either aggressive (i.e., alpha) or nonaggressive conspecific colonies and tested 24 h later, with or without alpha odors, for freezing behavior and burying of a wall prod that had been the source of a brief electric shock. The results indicated that prior defeat experience and the presence of alpha odors alone during testing had no significant effects, but the combination of prior defeat and alpha-odor testing significantly decreased burying and increased freezing behavior. In Experiment 2, we examined the effects of noncontact exposure to a cat, as a predatory Stressor, during subsequent prod-shock tests involving the presence or absence of cat odors. Exposure to a cat failed to disrupt later prod burying and did not produce freezing. However, the presence of cat odors during testing significantly reduced the amount of defensive burying,without resulting in an increment in freezing. In Experiment 3, rats were given 1, 5, or 30 inescapable preshocks in the presence of either cat odors or a hedonically neutral citronella odor and were tested 24 h later for prod burying and freezing with or without these odors. Both the cat and the citronella odors resulted in a significant reduction in burying and an increase in freezing for rats given 5 and 30 preshocks and tested in the presence of these respective conditioned odors. For the groups that were given 5 preshocks, preshock and later testing in the presence of cat odors resulted in significantly less prod burying and more freezing than for rats that were preshocked and tested in the presence of citronella. The findings of these three ethoexperimental studies are discussed in terms of the learned-helplessness theory, the stress-coping-fear-defense (SCFD) theory, and the concept of selective CS-US associability. 相似文献
23.
The phrase “social movement” typically conjures up images of pickets, massive crowds, and noisy demonstrations. An emerging approach to campus‐based change, used in Fraternal Futures and other projects, is tapping into the small, the local, and the personally relevant. 相似文献
24.
Constructivist Metaphors of Learning Science 总被引:2,自引:1,他引:2
Based on an analysis of a fundamental distinction between metaphors of finding versus making for the obtaining of new knowledge, a number of constructivist positions in education are discussed and criticised, taking account of earlier criticism particularly by Suchting and by Matthews. Constructivist claims which are denied include the claim that we have no direct access to the world, and the claim that communication is inherently meaningless. What is valuable in constructivism, namely the insistence on active learning, on respect for the pupils own thinking, and on the high priority needed for ideas taught to make sense to pupils, together with the reminder that science is a human product, is important to retain without its additional and ill-founded philosophical baggage. 相似文献
25.
The relation of parenting style to adolescent school performance 总被引:21,自引:0,他引:21
S M Dornbusch P L Ritter P H Leiderman D F Roberts M J Fraleigh 《Child development》1987,58(5):1244-1257
This article develops and tests a reformation of Baumrind's typology of authoritarian, permissive, and authoritative parenting styles in the context of adolescent school performance. Using a large and diverse sample of San Francisco Bay Area high school students (N = 7,836), we found that both authoritarian and permissive parenting styles were negatively associated with grades, and authoritative parenting was positively associated with grades. Parenting styles generally showed the expected relation to grades across gender, age, parental education, ethnic, and family structure categories. Authoritarian parenting tended to have a stronger association with grades than did the other 2 parenting styles, except among Hispanic males. The full typology best predicted grades among white students. Pure authoritative families (high on authoritative but not high on the other 2 indices) had the highest mean grades, while inconsistent families that combine authoritarian parenting with other parenting styles had the lowest grades. 相似文献
26.
In seven experiments, 2 squirrel monkeys were given choices between arrays of food that varied in the quantity offered. In Experiments 1-5, the monkeys were offered choices between quantities of the same food that varied in a 2:1 ratio. The squirrel monkeys failed to show the temporal myopia effect or a decrease in preference for the larger quantity as the absolute number of food items offered increased. Even when given choices of 8 versus 16 peanuts and 10 versus 20 peanuts, both monkeys significantly preferred the larger quantity. An examination of the monkeys' rates of consumption indicated that 20 peanuts were consumed over a 1- to 2-h period, with eating bouts separated by periods of nonconsumption. In Experiments 6A, 6B, and 7, food was either pilfered or replenished 15 min after an initial choice, so that choice of the smaller quantity led to more total food in the long run. These manipulations caused both monkeys to reduce choice of the larger quantity, relative to baseline choice. The results suggest that squirrel monkeys anticipated the future consequences of their choices. 相似文献
27.
In a recent opinion, the Sixth Circuit Court of Appeals ruled that a community college instructor has a constitutional right to utilize the words nigger and bitch in the context of a classroom discussion in a course on interpersonal relations. This article discusses this case in the context of other court decisions concerning a college's right to regulate an instructor's classroom speech. Implications for personnel evaluation in the higher education setting are discussed. 相似文献
28.
Bin Ling Colin Allison J Ross Nicholl Luke Moodley Dave Roberts 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(2):289-294
The Disabilities Information Flow (DIF) project at the University of St Andrews has sought to provide a means of efficiently managing all student disabilities information within the institution and provide appropriate role‐based service interfaces for all staff who need to routinely interact with this information. This paper describes the software engineering processes used for the context analysis, design and implementation of the DIF. 相似文献
29.
The paper presents findings from an evaluation of ‘industrial education’ subjects (wood, metal, electrical and power technology) in Kenyan academic secondary schools. As a project established in 35 schools with comprehensive aid agency (SIDA) support, these subjects do not suffer from lack of attraction to students or from low teacher morale. Exposure to them increases students' aspirations and expectations of ‘technical/practical’ work, but the problem is not lack of interest in such work, but rather scarce opportunity to realise such ambition, in a labour market where school leavers face great problems in finding a source of livelihood. Except for individual cases, exposure to these subjects does not seem to give students an advantage in the labour market, according to findings from a one-year follow-up. Further, doing well in general on the lower secondary examination does not confer any short-term labour market advantage either, suggesting that personal contacts rather than school credentials are decisive. We conclude policy makers need to recognise that pre-vocational subjects should be seen as part of general education rather than as a remedy for youth unemployment. 相似文献
30.
Jon Lauglo 《Prospects》1989,19(3):407-426
Working within a comparative perspective, has published on pre-vocational education and vocational training, the teaching profession, distribution of authority in education systems and university policy. 相似文献