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41.
    
Thirsty rats were trained to collect small water rewards from the end of each arm of an eight-arm radial maze. During these training trials and subsequent testing trials, the subjects were allowed to choose a maximum of eight arms. “Preference” for a target maze location was studied by noting when, in the sequence of eight choices, the target was selected. During testing, when one maze location was consistently devoid of water, rats decreased their preference for this arm over trials (Experiment 1). Similarly, rats that learned a saccharin-lithium association demonstrated lower preferences for a maze location that consistently held the conditioned saccharin solution. This was true for animals that received saccharin-lithium conditioning on the maze (Experiment 3A) and for animals conditioned to saccharin in a separate context (Experiment 3B). An increase in preference for a target maze location consistently containing a sweet chocolate milk solution was observed in animals that were water- and food-deprived (Experiment 2). These studies demonstrate that animals will modify their responses toward (preferences for) maze locations that predictably contain an altered reward.  相似文献   
42.
This study examined the extent to which (a) nine US history students developed historically-grounded perspectives, and (b) the entire class engaged itself in inclusive, moral debate about historical events and issues. Inductive methods were used in this micro-ethnographic study to construct and verify its themes though interview, classroom observation and student survey. Seven students demonstrated identifiable perspectives. History was viewed by these students as personally-constructed interpretations, not as value-free chronologies. Only one student's perspective, however, was historically-grounded; other perspectives were grounded in references to contemporary issues. Evidence of moral debate was limited totwo debates observed during 24 classroom observations. These two findings seemed interconnected: students with little historical grounding to their perspectives may have little inclination toward collective, ethical critique. Moral debate consisting of student exchange of diverse historically-grounded perspectives was not the classroom norm. The debates that went into the making of American society concerned not just institutions or governing principles, but the capacity of humans to sustain those institutions. Whatever the disagreements were over other issues at the American Constitutional Convention \[in Philadelphia in 1787], the fundamental question sensed by everyone … was whether the people themselves would understand what it meant to hold the ultimate power of society, and whether they had enough sense of history and destiny to know where they had been and where they ought to be going. (Cousins; cited by Goodlad 1979: 40; emphasis added)  相似文献   
43.
    
ABSTRACT:  Food companies and supporting industries need inexpensive, revisable training methods for large numbers of hourly employees due to continuing improvements in Hazard Analysis Critical Control Point (HACCP) programs, new processing equipment, and high employee turnover. HACCP-based food safety programs have demonstrated their value by reducing the number and frequency of multimillion-dollar food recalls. The focus for the future must be proactive training of plant personnel to ensure continuous improvements in plant food safety and quality. In response to this need, we developed training modules focused on applying HACCP principles, quality aspects, and production information to individual poultry unit operations. Learning objectives were evaluated using discount usability testing techniques to optimize the delivery system and to ensure a satisfactory e-learning experience. Discount usability testing of this virtual orientation was successful in obtaining vast amounts of feedback. Usability issues with the training materials were identified. Expected completion times were not met by most participants, indicating that a change in the format of the course might be necessary, perhaps segmenting the modules into smaller sections to be reviewed independently of one another. Another suggestion by the evaluators was to include narration for the sections, which might in turn speed up the completion times. A navigation error was discovered by these users, as well as other critical errors in design. Other errors, such as font inconsistencies and page design changes, were also discovered by the participants.  相似文献   
44.
An account of an experiment in self‐assessed learning where the lecturer used his authority to give his students responsibility for their own assessment. Students were expected to set their own goals, week‐by‐week, and prepare a self‐assessment, which was open to questioning and discussion by other members of the group, but which involved only the individual student in the final decision.

The difficulties encountered are clearly stated, but the final judgment is that only such methods can achieve deep processing in Higher Education. It is also argued that conventional methods of evaluation are inappropriate for this style of learning.  相似文献   

45.
    
This article reports on an empirical study exploring Ghanaian teachers’ understandings of teaching, learning and assessment. It argues that received views of poorly trained teachers with untheorized and badly reasoned professional practices may mask a more complex situation. In defining learning, teachers in the study reproduced models consistent with transmission or behaviouristic theories. However, when asked to describe their most successful experiences, teachers’ understandings were more in accord with social constructivism. Also, their aspiration towards interactive models of classroom assessment was circumscribed by the normal context of assessment discourse and by bureaucratic requirements. The article concludes that, given the right circumstances, teachers can reflect on their experiences and produce a more sophisticated account of teaching and learning. It suggests ways in which in‐service work might make use of these insights, recommending further attention to the discursive frames of teachers’ professional reflections within dialogue and active engagement through school‐based coaching.  相似文献   
46.
Research Findings: Assessing the development of early literacy skills is necessary in order to identify children with delays, provide appropriate intervention, and monitor progress. The purpose of the current study was to compare the data obtained from 2 curriculum-based assessments of phonological awareness skills in a sample of low-income, urban preschoolers. Participants included 227 children from Head Start and other community-based preschool classrooms located in a midwestern city. The Preschool Individual Growth and Development Indicators (IGDIs) and the Phonological Awareness and Literacy Screening–PreK (PALS-PreK) were administered in the fall and spring of the year. Results suggested that the PALS-PreK was more advantageous than the IGDIs in terms of providing meaningful data for this group of children. The IGDIs appeared to be more appropriate for developmentally advanced preschoolers in this population. Practice or Policy: There remains a critical need for assessments of emergent literacy that are appropriate for diverse groups of preschool children and can feasibly be used for monitoring development.  相似文献   
47.
    
Rats were runway trained on each of two, three-trial series consisting of different varieties of reward (X, Y, and Z) and nonreward (N) serving as trial outcomes. The two series are represented as XNY and ZNN. Distinguishing the two series were different brightness and texture cues on the runway floor. Transfer tests, conducted after the rats had developed faster running for rewarded trials than for nonrewarded trials and slower running on Trial 2 of ZNN than on Trial 2 of XNY, provided evidence that trial position, rather than item memories, was controlling the discriminations. In Experiment 1, reversing the floor cues completely reversed the discriminations. In Experiment 2, transfer to NNN did not change the routine patterns of approach that had been established.  相似文献   
48.
    
We present a practical way of adapting and using four research-based assessments for different purposes in an electricity and magnetism course for K-8 science teachers. The course is designed to accomplish conceptual change toward accepted scientific conceptions as well as introducing teachers to materials and activities appropriate for their classrooms. Our data support that using the research-based tests to identify alternative conceptions and discuss test results with teachers is a promising way to use the knowledge of alternative conceptions in professional development. We also identify some mismatches between the research of conceptual change and its use in programs of professional development.
Ji ShenEmail:
  相似文献   
49.
    
Research Findings: This article provides Australian evidence of the availability and quality of early childhood education and care (ECEC) services in low–socioeconomic status (SES) neighborhoods. There is less availability of ECEC in low-SES areas in Australia, and these programs provide a lower average quality of care than in more advantaged neighborhoods. Families tend to travel short distances to ECEC programs (Mdn = 2.9 km), and therefore families in low-SES areas are limited in the programs they can choose or are faced with higher transport costs than families in more advantaged neighborhoods. This study uses government licensing data from a population of 6,937 ECEC services together with a sample of 2,494 children enrolled in 421 ECEC classrooms. Practice or Policy: Established measures of the local ECEC market tend to overestimate its size and in turn the availability of ECEC. Measures of ECEC market density should be tested for sensitivity to reductions in size. SES gradients are observed within local ECEC markets, meaning that attempts to lift supply and quality in low-SES areas require specific and targeted policy intervention.  相似文献   
50.
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