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1.
In five conditioned taste aversion experiments with rats, summation, retardation, and preference tests were used to assess the effects of extinguishing a conditioned saccharin aversion for three or nine trials. In Experiment 1, a summation test showed that saccharin aversion extinguished over nine trials reduced the aversion to a merely conditioned flavor (vinegar), whereas three saccharin extinction trials did not subsequently influence the vinegar aversion. Experiment 2 clarified that result, with unpaired controls equated on flavor exposure prior to testing; the results with those controls suggested that the flavor extinguished for nine trials produced generalization decrement during testing. In Experiment 3, the saccharin aversion reconditioned slowly after nine extinction trials, but not after three. Those results suggested the development of latent inhibition after more than three extinction trials. Preference tests comparing saccharin consumption with a concurrently available fluid (water in Experiment 4, saline in Experiment 5) showed that the preference for saccharin was greater after nine extinction trials than after three. However, saccharin preference after nine extinction trials was not greater, as compared with that for either latent inhibition controls (Experiments 4 and 5) or a control given equated exposures to saccharin and trained to drink saline at a high rate prior to testing (Experiment 5). Concerns about whether conditioned inhibition has been demonstrated in any flavor aversion procedure are discussed. Our findings help explain both successes and failures in demonstrating postextinction conditioned response recovery effects reported in the conditioned taste aversion literature, and they can be explained using a memory interference account. 相似文献
2.
Tuulikki Venninen Jonna Leinonen Lasse Lipponen Mikko Ojala 《Early Childhood Education Journal》2014,42(3):211-218
Children’s participation in the early childhood education context is a multidimensional issue and educators have a significant role in enhancing participation. In this paper, we focus on the existing challenges to children’s participation and the ways that child care educators can work as teams to meet those challenges. The data were collected with a questionnaire from 1,114 child care teams working in the Helsinki metropolitan area. These teams consisted of almost 4,000 educators who took care of almost 20,000 children. Through ESEM factor analysis, the variables were organized into five factors: Adult–Child Ratios, Professional Skills; Managing Work; Work Practices and Special Needs. The team members felt they had a varying impact on the different challenges: highest on professional skills and managing work and lowest on Adult-Child Ratios. The results offer material for reflecting on practices in early childhood education especially when children’s participation must be developed. 相似文献
3.
Evaluating fifth- and sixth-grade students’ expository writing: task development, scoring, and psychometric issues 总被引：1，自引：0，他引：1
Drawing from multiple theoretical frameworks representing cognitive and educational psychology, we present a writing task
and scoring system for measurement of students’ informative writing. Participants in this study were 72 fifth- and sixth-grade
students who wrote compositions describing real-world problems and how mathematics, science, and social studies information
could be used to solve those problems. Of the 72 students, 69 were able to craft a cohesive response that not only demonstrated
planning in writing structure but also elaboration of relevant knowledge in one or more domains. Many-facet Rasch Modeling
(MFRM) techniques were used to examine the reliability and validity of scores for the writing rating scale. Additionally,
comparison of fifth- and sixth-grade responses supported the validity of scores, as did the results of a correlational analysis
with scores from an overall interest measure. Recommendations for improving writing scoring systems based on the findings
of this investigation are provided. 相似文献
4.
Investigating the temporal order of regulatory processes can explain in more detail the mechanisms behind success or lack of success during collaborative learning. The aim of this study is to explore the differences between high- and low-challenge collaborative learning sessions. This is achieved through examining how the three phases of self-regulated learning occur in a collaborative setting and the types of interaction associated with these phases. The participants were teacher training students (N?=?44), who worked in groups on a complex task related to didactics of mathematics during 6 weeks. The participants were instructed to use an application that was designed to increase awareness of the cognitive, motivational and emotional challenges the group might face. Based on the application’s log files, the sessions were categorized into low- and high-challenge sessions. The video data from each session were coded based on the self-regulation phases and the types of interaction. The frequencies of the phases and the types of interaction were calculated for each session, and process discovery methods were applied using the heuristic miner algorithm. The results show no significant differences between the sessions in the frequency of phases. However, the process models of the two sessions were different: in the high-challenge sessions, the groups switched between the forethought and performance phases more. In conclusion, the regulation phases and types of interaction that contribute to successful collaboration differ in high- and low challenge sessions and support for regulated learning is needed especially at the middle of the learning process. 相似文献
5.
Jonna Larsson 《Education 3-13》2018,46(7):770-781
This article grasps the essence of how a science content can be foregrounded by elaborating around concepts as floating and sinking, in relation to boats. The data consist of a videotaped authentic session with one preschool teacher and four children. The model of pedagogical reason and action [Shulman, L. S. 1987. “Knowing and Teaching: Foundations of the New Reform.” Harvard Educational Review 57 (1): 1–23. doi:10.17763/haer.57.1.j463w79r5645541] constitutes the analytical lens. The results show that the content is framed within a series of creative activities where children’s suggestions of how to act are crucial. The scientific content is approached according to the children’s verbalisations of their understandings. Furthermore, dialectical relationships become the main tool when making the content visible. 相似文献
6.
Previous research has demonstrated that discrete cues presented during extinction of a conditioned response (extinction cues) subsequently reduce spontaneous recovery and the renewal effect. In order to assess whether an extinction cue’s effect is due to conditioned inhibition, the effect of pairing an extinction cue with food on the cue’s capacity to modulate spontaneous recovery was investigated in an appetitive conditioning experiment with rats. Conditioned inhibitors paired with the unconditioned stimulus lose their potential to inhibit responding. The food-paired extinction cue did not lose its potential to reduce spontaneous recovery. In fact, it reduced spontaneous recovery more than did an extinction cue that was not paired with food. The results indicate that extinction cues attenuate postextinction recovery of conditioned responding through a mechanism other than conditioned inhibition. The cue’s action appears to be similar to that of serial negative occasion setters. Theories of spontaneous recovery and the relationship of extinction cues to other modulatory stimuli are discussed. 相似文献
7.
A characteristic feature of scientific knowledge is the high degree of coherence and connectedness of its conceptual structure.
This notion is also behind the widely accepted instructional method of representing the concepts as networks. We suggest here
that notions of explanatory coherence and deductive coherence naturally connect the structure of knowledge to the processes
which are important in constructing the concept networks. Of these processes, experimental method and modelling are shown
to be closely connected with explanatory and deductive coherence, respectively. From this viewpoint, we compare here how experts
and novices represent their physics knowledge in the form of concept networks, and show that significant differences between
experts’ and novices’ quality of knowledge become directly reflected in the structure of the networks. The results also show
how concept networks make visible both the structure of knowledge and the methodological procedures, which support its formation. 相似文献
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9.
Research on self-regulated learning has focused predominantly on a static individual level to explain various strengths and weaknesses of learners. However, much learning today is highly interactive and technologically enhanced, which an individually oriented perspective to regulated learning does not consider. In this article we discuss regulation by bringing situational and contextual variation of regulated learning into focus. We introduce a situative perspective on regulation of learning and give arguments and examples on how it can offer a way to conceptually and empirically grasp multiple layers of regulated learning in social contexts. We also compare the given perspective with sociocognitive and sociocultural perspectives to regulated learning. We conclude that the situative perspective can significantly enrich understanding about individual and group learning as a regulated activity, because it offers a way to examine regulation beyond the individual while not losing sight of learners as individual subjects. 相似文献
10.
Learning to understand the content and meaning of physics’ concepts is one of the main goals of physics education. In achieving
this understanding, the creation of quantities through quantitative measurements, or rather through quantifying experiments,
is a key process. The present article introduces a didactical reconstruction for understanding the construction of the meaning
of physical quantities from a network point of view, where the quantities are part of networks and the quantifying experiments
build up these networks. As a practical example, we discuss how the quantity temperature is constructed in an instructional
unit designed for student teachers and what the learning outcomes are. 相似文献