Three groups of rats underwent 24 days of training and 12 days of extinction (three trials per day) in a runway under conditions of increasing (I), decreasing (D), and random (R) sequences of reward magnitudes (0, 45, and 500 mg). The I Ss ran faster over the daily trials, the D Ss slowed down, and the R Ss ran at approximately equal speeds on each trial. The patterned running observed in training persisted in extinction, with the R Ss running fastest and the I Ss next. The results were discussed in terms of Capaldi’s sequential theory and Amsel’s frustration theory. 相似文献
Positioned in the Hong Kong education context, this article evaluates the effects of teaching science through home and second languages (i.e. Chinese and English) in Secondary 2 (or eighth grade) science classrooms. A total of 479 students, divided into two language instruction groups, participated in a teaching intervention comprising 16 lessons on the topic of ‘Making Use of Electricity’. Informed by the results of a mixed-methods study with a quasi-experimental design, with data collected from science diagnostic tests, inquiry questions and focus group interviews, this article reports that Chinese is the most advantageous language of instruction for low- and middle-ability science students, whereas English is more favourable for their high-achieving peers. Whilst Hong Kong students who learnt the focal topic in English were able to rid themselves of certain naive ideas generated from the translation of science terms into Chinese (e.g. pencil ‘鉛筆’ is translated as ‘lead pen’ in Chinese), they were also found to have misconceptions about certain scientific concepts. For example, they were confused about ‘open’ and ‘closed’ circuits because they mixed up the words ‘open’ (‘開放’) and ‘switch on’ (‘開啟’) in English. The study’s broad implications for language support and a mixed-code approach in science teaching worldwide are discussed.
Higher education is under increasing pressure to re‐evaluate the place of practice in its programs and there are increasing demands for workplace‐based experiences to be built into undergraduate degrees. The paper reports on an extended responsive case study conducted in the School of Criminology and Criminal Justice at Griffith University between 1994 and 2004. The findings point towards a model that can be used to develop courses based around a set of key challenges that learners need to face, criteria for the university’s construction of worthwhile activities, and principles of procedure that are required in order to implement them. It is suggested that university curriculum planners should concentrate on a process model of teaching, learning and research rather than on the more traditional models that tend to treat knowledge as a commodity and emphasise its production, transmission and delivery. 相似文献
The year 1989 marked the official end of communist rule in Poland and the replacement of ‘Gosplan’ by new instruments for liberal-democratic governance. In terms of the economy this heralded a departure from Gosplan’s five-year planning cycles, performance targets and the ‘propaganda of success’. Paradoxically, however, 27 years later, the marketisation of higher education in Poland has been accompanied by a continuation of Gosplan thinking. This is manifested in a neoliberal vision of the modern, ‘corporate’ university as a largely utilitarian enterprise, but subject to a style of performance management strongly resonant of the Soviet era. This article analyses the thinking, ideas and ideologies that have shaped contemporary higher education in Poland. It is contended that the rise of the ‘corporate university’ signals the twilight of the Humboldtian tradition and raises questions about what the corporate ideal of ‘excellence’ may mean for the future of the university. 相似文献
