共查询到20条相似文献，搜索用时 15 毫秒
1.
Nicola Westberry 《Teaching in Higher Education》2013,18(3):300-312
This paper provides an Activity Theory analysis of two online student-driven interactive learning activities to interrogate assumptions that such groups can effectively learn in the absence of the teacher. Such an analysis conceptualises learning tasks as constructed objects that drive pedagogical activity. The analysis shows a disconnect between the codified curriculum plan and its actual enactment, and a misalignment of interpretations of the object by different participants in the activity. We name this ‘pedagogical distance’. We argue that a teaching presence is important to guide both student and tutor interpretations of the learning task, and offer suggestions for decreasing pedagogical distance. 相似文献
2.
Goldfish, trained in the avoidance shuttlebox with a variant of the linear discrimination procedure, learned to conditionally discriminate between color signals, both for the matching (M) and oddity (O) criterion forms. Transfer to assess the possibility of concept learning was also tested. In original learning, oddity-trained groups learned faster and reached higher conditional discrimination performance levels than did matching-trained groups. In transfer, various groups were tested with the same criterion (MM or OO) or a shifted criterion (MO or OM), and half of each group retained the same color signals and the remaining half had its color signals changed in transfer. Groups with the same criterion in original learning and transfer (MM or OO), regardless of signal colors, showed comparable positive transfer. Groups with their criterion shifted between original learning and transfer (MO or OM) showed comparable negative transfer, regardless of signal colors. Since both positive- and negative-transfer effects were independent of signal colors, it is clear that what was learned for one set of signal colors transferred to at least one other signal-color set. These findings are consistent with the interpretation that goldfish learned the original conditional discrimination at a conceptual level, and learned about the general matching or oddity relationships between colors, rather than about a specific set of colors. 相似文献
3.
Ontogenetic differences in processing light-tone compounds were discovered in preweanling (17-day-old) and adult (60–80-day-old) rats. Suppression of general activity was used as an index of the magnitude of conditioned fear following a single training session in which a CS+ was paired with mild footshock. In Experiment 1, rats were trained on discriminations in which the CS? consisted of a light and the CS+ was either a tone alone (simple discrimination) or a light-tone compound (simultaneous feature-positive discrimination). Adults and preweanlings given each type of discrimination were then tested for fear of the CS? and a target stimulus (tone alone or light-tone compound). Adults in all groups displayed greater fear of the target than of the CS?. Preweanlings, however, discriminated the CS? from the target only when the target was the same as the original CS+. Experiment 2 revealed that age-related differences in conventional stimulus generalization is not a likely explanation for the pattern of results found in Experiment 1. Experiment 3 revealed age-related differences in expressed fear of a serial feature-positive discrimination; adults, but not preweanlings, showed greater fear of the compound than of the CS?. Alternative interpretations of the results from these experiments are discussed, and the general conclusion is that adults appear more inclined to process elements of a compound stimulus selectively, whereas preweanlings seem more likely to process the compound unselectively, with roughly equivalent processing of each element. 相似文献
4.
Sadahiko Nakajima 《Learning & behavior》1997,25(4):413-426
Four experiments were performed to explore modulatory transfer after serial feature-ambiguous (F-A) discrimination (X→A+, A?, X→B?, B+) in Pavlovian keypeck conditioning (autoshaping) with pigeons. Diffuse features were used in the first three experiments, and no modulatory transfer was found: (1) There was no modulatory transfer between two concurrently trained F-A tasks; (2) modulatory transfer to conditioned and then extinguished stimuli was not observed; and (3) responding to the targets (A and B) after their contingencies were reversed was not affected by presentation of their original feature stimulus (X). Transfer between two serial F-A tasks was obtained in the last experiment, in which keylights were used as features, but other evidence indicated that this was due to stimulus generalization between the features. Together, the results strongly suggest that specific target-food occasion setting or configural learning is the underlying mechanism of F-A discrimination. 相似文献
5.
The present experiments examined transfer of training from visual to auditory sensory modalities in classical conditioning of the rabbit’s nictitating membrane response. Experiment 1 examined transfer from initial training with a single visual CS to subsequent auditory discrimination training, and Experiment 2 examined transfer from visual discrimination training to auditory discrimination training. The major findings were that (1) initial conditioning of a visual CS facilitated the overall rate of CR acquisition to the auditory CSs separate from the requirements for discrimination learning (Experiments 1 and 2), and (2) initial visual discrimination training facilitated auditory discrimination learning (Experiment 2). Thus, the animals appeared to encode separately both contiguous CS-US relations and CS+ versus CS? relations during initial visual training. The results are discussed with respect to theories of extradimensional transfer. 相似文献
6.
Jenny Buckworth 《Asia-Pacific Journal of Teacher Education》2017,45(4):369-382
Overarching tasks faced by initial teacher education (ITE) students comprise a multitude of factors, not least learning to marry theoretical learning with practical application. Part of this learning is the gradual construction of relationships with learners and colleagues. Another, less exposed, challenge arises from a disparity of outlook that can extend to differences in beliefs, values and openness to others. This study focussed on failing final year pre-service teachers. Using a phenomenological method, these student voices were interpreted to reveal instances of discrimination and silencing that emerged during their mandated professional experience. Accounts of inequity, bias and injustice illuminated some contradictions inbuilt into this period as poor relationships and inappropriate power relations became counterproductive in what is presumed to be a developmental and non-negotiable ITE activity. Results highlight some of the unspoken and unquestioned practices in schools and the corresponding agency employed by pre-service teachers as they seek acknowledgement and inclusion. 相似文献
7.
The ontologies of complexity and learning about complex systems 总被引：1，自引：0，他引：1
This paper discusses a study of students learning core conceptual perspectives from recent scientific research on complexity
using a hypermedia learning environment in which different types of scaffolding were provided. Three comparison groups used
a hypermedia system with agent-based models and scaffolds for problem-based learning activities that varied in terms of the
types of text based scaffolds that were provided related to a set of complex systems concepts. Although significant declarative
knowledge gains were found for the main experimental treatment in which the students received the most scaffolding, there
were no significant differences amongst the three groups in terms of the more cognitively demanding performance on problem
solving tasks. However, it was found across all groups that the students who enriched their ontologies about how complex systems
function performed at a significantly higher level on transfer problem solving tasks in the posttest. It is proposed that
the combination of interactive representational scaffolds associated with NetLogo agent-based models in complex systems cases
and problem solving scaffolding allowed participants to abstract ontological dimensions about how systems of this type function
that, in turn, was associated with the higher performance on the problem solving transfer tasks. Theoretical and design implications
for learning about complex systems are discussed. 相似文献
8.
Various types of discrimination learning tasks, such as so-called nonconditional, conditional, and biconditional tasks, are
generally held to differ in complexity and to require different amounts of training. However, rather than a difference in
rule complexity, between-task performance differences may reflect a difference in number of underlying rules. Accordingly,
in the present study, human participants were subjected to tasks differing in number and/or complexity of rules. In Experiments
1 and 3, participants learned to differentially respond to visual-target stimuli, each of which was preceded by a visual feature.
Conditions differed in the number of different features and in the informational value of individual features and/or targets.
In Experiment 2, participants were fully informed about all relevant stimulus-response mappings prior to each trial. Performance
accuracy was primarily determined by number of underlying rules in the initial phase of discrimination learning, especially
when the time available for responding was restricted. However, when participants had attained a high accuracy level, performance
was solely determined by rule complexity. Apparently, number and complexity of rules have a different weight, depending on
the stage of discrimination learning. 相似文献
9.
Tuan D. Tran Laura C. Adducci Liza D. DeBartolo Beth A. Bower Eugene R. Delay 《Learning & behavior》1994,22(4):421-426
Cross-modal transfer of learning between black/white and rough/smooth discrimination tasks was studied in a two-choice maze procedure in which the stimuli for both discriminations were located on the floor of the maze. Rats were trained initially with cues of one modality and then given transfer training with cues of the second modality. The amount of transfer produced by two criteria of learning, 9 correct responses in 10 trials and 18 correct responses in 20 trials, was also studied. Bidirectional cross-modal transfer of learning was demonstrated more clearly with the more stringent learning criteria. These positive transfer effects appeared primarily to be the result of general transfer processes. 相似文献
10.
Stephen C. Brake 《Learning & behavior》1978,6(4):435-443
Rats were given continuous reinforcement (CRF), partial reinforcement (PRF), or successive discrimination (D) training in an alley from 11–14 (Age 1) or 15–18 (Age 2) days of age. Reinforcement was the opportunity to suckle the dry nipples of an anesthetized dam. Following a 10-day interval, all animals were given 4 successive days of discrimination training with food pellets as reinforcement. Control groups were given only the second phase of training. In the first phase, D subjects of both ages responded appropriately to the discriminative stimuli, and the PRF subjects of both ages ran significantly slower than CRF subjects. In the second phase, only the CRF subjects of Age 1 showed behavioral discrimination. All three Age 2 groups discriminated, but the discrimination developed earliest after Phase I CRF and latest after Phase I PRF. Both Age 1 control groups showed a late-developing discrimination, but neither Age 2 control group discriminated. The results suggest that infant and preweanling rats can learn both positive and negative expectancies of appetitive events, respond appropriately, and retain and transfer these expectancies to new learning. The reinforcement value of dry suckling and the effects of stimulus preexposure in infant rats are also discussed. 相似文献
11.
Heather Macintosh Schellinck Richard E. Brown Burton M. Slotnick 《Learning & behavior》1991,19(3):223-233
To determine the influence of genetic and microbiological factors in producing individually unique urine odors, we used a go/no-go operant task to assess the ability of eight male Long-Evans rats to discriminate between urine odors from the following pairs of male rats: (1) two outbred Long-Evans rats, (2) individual conventionally housed rats differing genetically only at the major histocompatibility complex (PVG vs. PVG.R1), (3) individual PVG versus PVG.R1 rats born by cesarean section and raised in germfree conditions, and (4) conventionally housed, genetically identical individuals of the PVG or PVG.R1 strains. Discriminable differences were present between the urine odors used in all four tasks. Analysis of the errors to a criterion of 85% correct discrimination responses revealed different learning patterns in each task. When bacteria were not present in genetically different rats (Task 3) and when bacteria were present but there were no genetic differences between rats (Task 4), the discrimination was the most difficult. The easiest discrimination involved the presence of bacteria and a genetic difference at the major histocompatibility complex (Task 2). These results indicate that, although bacteria are not necessary for the production of discriminable odor differences, they do influence the discriminability of the urine odors of rats. 相似文献
12.
《Structural equation modeling》2013,20(3):390-412
The sample invariance of item discrimination statistics is evaluated in this case study using real data. The hypothesized superiority of the item response model (IRM) is tested against structural equation modeling (SEM) for responses to the Center for Epidemiologic Studies-Depression (CES-D) scale. Responses from 10 random samples of 500 people were drawn from a base sample of 6,621 participants across gender, age, and different health groups. Hierarchical tests of multiple-group structural equation models indicated statistically significant differences exist in item regressions across contrast groups. Although the IRM item discrimination estimates were most stable in all conditions of this case study, additional research on the precision of individual scores and possible item bias is required to support the validity of either model for scoring the CES-D. The SEM approach to examining between-group differences holds promise for any field where heterogeneous populations are assessed and important consequences arise from score interpretations. 相似文献
13.
《Learning and Instruction》2007,17(1):1-16
Findings show that both positive and negative mood may hinder or promote information processing. In two experiments, we show that negative mood impairs transfer effects and learning. In the first experiment, N = 54 participants drawn from a training course for the Swiss Corps of Fortification Guards first learned to solve the three- and four-disk Tower of Hanoi (ToH) problem to mastery level. After mood induction, they were asked to solve one proximal (five-disk ToH) and two distal transfer tasks (the Missionary and Cannibal Problem and the Katona Card Problem). Participants in a negative mood solved the transfer tasks less efficiently. In the second experiment, this result was replicated with a sample of N = 80 participants drawn from a training course for nurses. Additionally, mood affected performance if it was induced before the learning phase; participants in a negative mood needed more repetitions to reach the mastery level and also performed worse in the transfer tasks, although there were no greater mood differences in this problem-solving phase. The implications for the design of learning settings are discussed. 相似文献
14.
Jean Whyte 《Journal of Research in Reading》1982,5(2):123-132
Associations have been found between reading ability around the age of seven to eight years and communicative competence, indicating a stage corresponding to the Piagetian concrete operations stage. It was not known, however, whether children who lagged at that stage in learning to read and in acquiring communicative competence would eventually‘catch up’with their peers in both these areas. This paper reports an exploratory study of this issue with adults who had not learnt to read as children although they were of average intelligence, and had no obvious physical defect. The objectives were: (a) to investigate whether these adults would perform on the same level as normal reading peers on language tasks requiring communicative and analytic competence; (b) to investigate whether performance on these tasks would be related to level of vocabulary comprehension and intelligence. No significant differences were found between the groups in their performance on the tasks involving communicative competence. However, normal readers scored significantly higher in tasks requiring analytic competence or the ability to retrieve and transform verbal material. In addition, the pattern of correlations was different for the two groups, suggesting that they had undergone different courses of cognitive development. The results cannot tell us whether the ability to read, or lack of it, influenced the development of these functions or vice versa. It seems from this investigation, however, that not all functions of oral language develop to the same extent in readers and in non-readers, and that this is not related solely to IQ. 相似文献
15.
This paper reports on a small‐scale study of students’ perceptions of selected aspects concerning the organisation of, and learning from, fieldwork. Two main findings emerge. (a) In the choke of working partners, students either seek partners whom they regard as capable of making positive contributions to the fulfilment of the learning tasks, or they opt for friendship groups. In the case of the former, the qualities looked for are predominantly subject knowledge and subject‐related skills: competence in the management of group learning does not appear as a major consideration. (b) Although the outcomes from group work were invariably judged to be positive, a large minority of students appeared to regard themselves as contributors to, rather than beneficiaries from, such work. These students judged the extent of their learning from group work as low or very low. 相似文献
16.
An established, captive colony of 74 rhesus monkeys (Macaca mulatta) was group-tested on a simultaneous visual discrimination problem and three reversals of the initial discrimination. The task incorporated important aspects of rhesus foraging behavior. Although other studies of communal groups of nonhuman primates have reported rapid learning, subjects in the present study showed no evidence of one-trial acquisition of the initial problem or of rapid learning-set formation across the reversal series. Instead, mean and individual performance, on all variables measured, improved gradually, both within and across series. Subjects appeared to “learn how to learn,” consistent with findings of traditional studies of individual discrimination learning. Our finding of gradual learning in group-living animals argues that the source of rapid learning in previous reports is not attributable to social influence or ecological relevance, but may reflect specific procedural or species differences between studies. 相似文献
17.
We reviewed eight studies that described learning differences between students with learning disabilities (LD) and students with mild mental retardation (MMR). A total of 639 students, 6–20 years old, participated in these studies. Study authors examined students' inductive reasoning and their performance during guided inquiry and more lengthy interventions in reading and math. Students with LD and students with MMR were assessed in terms of learning ease, pre‐ to posttreatment gains, and the maintenance, transfer, and application of knowledge acquisition. Students with LD statistically significantly outperformed students with MMR on both inductive reasoning and guided inquiry tasks. They made reliably larger gains following interventions in reading and math. Across all learning tasks and contexts, students with LD displayed greater consistency transferring and applying conceptual knowledge to new tasks. Regarding maintenance, results were mixed. Implications for categorical instruction are discussed. 相似文献
18.
为了解小学生自主学习能力和父母教养方式的基本状况以及二者之间的关系,并为家庭教育提供依据,该研究采用问卷调查了湖北省省委和政府所在社区某重点小学三年级和五年级学生。结果表明:三年级学生的自主学习能力显著高于五年级;父母对女孩积极的教养方式多于男孩,父亲对高年级的孩子采用更多积极的教养方式,而母亲对不同年级儿童教养方式无显著差别;父母教养方式对自主学习能力有一定的预测作用。因此得出结论,自主学习能力和父母教养方式存在相关。所以家长应该积极调整教养方式,以促进孩子自主学习能力的发展。 相似文献
19.
《Contemporary educational psychology》2002,27(2):296-325
Two studies were conducted with a systematized, Dutch version (Klauer, Resing, & Slenders, 1996) of the Klauer Denktraining program (Klauer, 1989b), a cognitive training program intended to foster children's inductive reasoning ability. The aim of both studies was to validate Klauer's theoretical claim of “paradigmatic” transfer, i.e., transfer based on an understanding of the deep structure of induction-type problems (Klauer, 1988). Klauer's theory of paradigmatic transfer implies that children trained with a program like the Denktraining will be relatively undistracted by differences in surface features between the inductive tasks from the training program and new inductive tasks. Participants in the first experiment were 9-year-old children from special schools (N = 31), while 7-year-olds from regular elementary education (N = 119) participated in the second experiment. Training was accomplished using Slenders and Resing's (1995) standardized training procedure. Transfer was tested for a set of inductive tasks of which the surface features varied in similarity to the Denktraining tasks: The tasks were superficially equivalent, similar, or dissimilar. Effects on the superficially equivalent and superficially similar tasks were put on a par with practice effects; effects on the superficially dissimilar tasks were taken to indicate paradigmatic transfer. To assess even better of whether the Denktraining's effects surpass practice effects, in the second experiment a practice condition was included. The results found in the first experiment seem to support Klauer's theory of paradigmatic transfer; the results obtained in the second experiment do not. In analyzing the conflicting nature of the findings, we discuss a plausible alternative explanation of the outcome of the first experiment. We conclude that the claim of paradigmatic transfer may be seriously doubted. 相似文献