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1.
George Marx 《International Journal of Science Education》2013,35(1):31-45
The astronomy concepts of 345 young people were studied over a 10‐year period using a multi‐media, multi‐modal methodology in a research design where survey participants were interviewed three times and control subjects were interviewed twice. The purpose of the research was to search for evidence to clarify competing theories on conceptual coherence versus knowledge‐in‐pieces, distinguishing between coherence as revealed in the representational systems at any particular stage in a young person’s development and the changes evident in mental growth thereafter. Thus five research questions concerned with the elements and structure of understanding were investigated: (1) conceptual coherence shown as patterns of high correlation of concept representations between the media used to assess subjects’ understanding within a survey, as well as (2) coherence revealed as consistency of representation of those concepts across media and modalities; (3) enhanced conceptual understanding and skill through repeated interviews across (longitudinal) surveys, as young people develop their knowledge; (4) cultural similarity in subjects’ representations of basic static concepts (e.g. the shape of the Earth); and (5) improved understanding of basic dynamic concepts (e.g. the motion of the Earth) and complex dynamic concepts (e.g. seasons and eclipses), through “knowledge‐skill compounding”. The research findings supported conceptual coherence and rejected the counter argument of knowledge‐in‐pieces (at an alpha level of .05). Further research is recommended to replicate current research in cultures other than those of China and New Zealand studied here to confirm the view that cognition and knowledge are inherently coherent in young people. 相似文献
2.
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
3.
Explaining natural phenomena is an important goal in science teaching. A logical analysis reveals that causal explanations exhibit formal operational structures in that they consist of implication statements chained together through transitive reasoning. It was hypothesized in the present study that individuals who do not reason formally will have difficulty in learning explanations presented in instruction. To test this hypothesis, the effect of levels of operational thought on the explanations which ninth-grade (n = 26) and college (n = 40) physical science students reconstructed after instruction was investigated. Subjects in the study were classified through Piagetian tests as concrete or formal operational. Both concrete and formal subjects were successful in recalling explanations requiring the chaining of two implication statements. Formal operational subjects performed significantly better than concrete operational subjects in three of the four tests of the reconstruction of complex explanations requiring the chaining of six implication statements. In teaching complex causal explanations to students at the concrete operational level, it is suggested that teachers be prepared to furnish some external structuring which the students can rely on in logically relating the various propositions of the explanation to one another. 相似文献
4.
Following One's Nose in Reading W. G. Sebald Allegorically: Currere and Invisible Subjects 
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下载免费PDF全文 Teresa Strong‐Wilson 《Educational theory》2017,67(2):153-171
In education, we are concerned with the teaching and learning of subjects, but the word “subject” can refer to the discipline being studied as well as the individual who is studying. In this essay, Teresa Strong‐Wilson explores this “double entendre” (which William Pinar refers to as the “double consciousness”) of curriculum studies through the analogy afforded by German author‐in‐exile W. G. Sebald's working through of difficult subjects by way of semi‐autobiographical writing that takes the form of an “invisible subject”: a preoccupation with an unnamed injustice entangled with his own upbringing. Curriculum theory, as currere, has foregrounded the autobiographical. While the place of autobiography in curriculum studies has often been taken to mean writing (especially of a confessional sort), currere is more an allegorical method of study, of intellectual engagement, of learning through reading and writing, and of teaching so as to open spaces for agency. Strong‐Wilson suggests that Sebald can provide a strong example for us in curriculum studies of how to ethically bring into being an allegorical, autobiographical practice focused on “invisible” subjects of deep concern. 相似文献
5.
For some time now, the research on gastric motility and function has fallen behind in the amount of research on gastric endocrine,
exocrine secretion, and gastric morphology. In this paper, a noninvasive method to study gastric motility was developed, taking
bioimpedance measurements over the gastric area simultaneously with the electrogastrography (EGG). This is based on the concept
of observing and analyzing simultaneously the intrinsic electrical gastric activity (basic electric rhythm) and the mechanical
gastric activity. Additionally, preliminary clinical studies of healthy subjects and subjects with functional dyspepsia (FD)
and gastritis were carried out. The impedance gastric motility (IGM) measurements of the healthy and FD subjects were compared,
along with the studies of the FD subjects before treatment and after one week and three weeks of treatment. We also compared
IGM measurements of healthy subjects and subjects with erosive gastritis, along with the studies of the subjects with erosive
gastritis before treatment and after one week of treatment. Results show that FD subjects have poor gastric motility (P<0.01). After a week of treatment, the gastric motility of FD subjects was not yet improved although the EGG had returned
to normal by this time. By three weeks of treatment, the regular IGM rhythm returned in FD subjects. There was a significant
difference of IGM parameters between the gastritis and healthy subjects (P<0.05). The EGG rhythm of the gastritis subjects returned to normal at one week post-treatment, while IGM parameters showed
a trend to improvement (P>0.05), These results suggest the possibility of clinic application of the proposed method. 相似文献
6.
Humans discount larger amounts of a delayed reinforcer less steeply than smaller amounts, but studies with pigeons and rats
have yet to reveal such a magnitude effect, suggesting that the effect may be unique to humans. The present study examined
whether the magnitude effect is observed in a species phylogenetically closer to humans, by comparing the rates at which rhesus
monkeys discounted 10% and 20% concentrations of sucrose. There were no systematic differences in the rates at which the monkeys
discounted the two sucrose concentrations, despite the fact that they strongly preferred the 20% concentration. Interestingly,
the monkeys discounted delayed sucrose at a rate higher than was observed with delayed cocaine, and lower than was observed
with delayed saccharin in previous studies (Freeman et al. Behavioural Processes, 82, 214-218, 2009; Woolverton et al. Experimental and Clinical Psychopharmacology, 15, 238-244, 2007). Taken together, these findings suggest that although both quantitative and qualitative differences can affect monkeys’
preferences between immediate reinforcers, qualitative differences between types of reinforcers (e.g., sucrose vs. cocaine)
can affect monkeys’ discounting rates in a way that quantitative differences within a reinforcer (e.g., 10% vs. 20% sucrose)
do not. 相似文献
7.
G. V. Prosser 《Instructional Science》1978,7(4):359-383
Both active questions i.e. questions asked by subjects, and provided (or passive) questions i.e. offered to subjects as problems for solution, had been found to facilitate learning and retention of prose material when subjects were faced with a task of sufficient difficulty to challenge their competence. With difficult prose, boys and low ability subjects had gained most from active questions. These effects were more pronounced in the long term. In this study, the effects of relevant active questions i.e. questions which subjects can put alongside answers, are investigated and compared with those of active and provided questions, over a series of six presentations for both the short and the long term (i.e. after ten months). In the short term, although active questions give greater help than provided questions on the first presentation, and relevant active questions give the greatest improvement between the first and second presentations, provided questions are the most helpful overall. In the long term, however, both the active questions treatments prove to be as effective as provided questions. For low ability boys, the difference between treatments is negligble even in the short term; under the relevant active questions treatment the number of questions asked is greater; and the decline in inspection time over presentations is negligible.This study formed part of a Schools' Council Research project (Director: Dr. W. P. Robinson) in the Department of Psychology, University of Southampton. 相似文献
8.
Ye Q Qiu YX Quo YQ Chen JX Yang SZ Zhao MS Fu CX 《Journal of Zhejiang University. Science. B》2006,7(11):868-872
Sinocalycanthus chmensis, an endangered species endemic to China, is cultivated as an omamental landscape tree in China. However, S. chinensis, Chimonanthus species and Calycanthusfloridus are difficult to be distinguished in seedling market because of their similar morphological characters. In this study, ISSR （inter-simple sequence repeats） were applied to detect S. chinensis from its closely related species. A unique 748-bp band was found in all accessions of S. chinensis. SCAR （sequence characterized amplified regions） markers were created by cloning and sequencing the specific band, and designing a pair of primers to amplify the band of 748 bp. Diagnostic PCRs were performed using the primer pair with the total DNAs ofS. chinensis, Chimonanthus species and C. floridus as templates, with only S. chinensis being able to be amplified. This amplification is not only rapid （results can be obtained in less than 3 h）, but is also easy to perform. Hence it is a feasible method for identifying S. chmensis in seedling market. 相似文献
9.
Pia Rosander Martin Bäckström Georg Stenberg 《Learning and individual differences》2011,21(5):590-596
The aim of the present study was to investigate the extent to which personality traits, after controlling for general intelligence, predict academic performance in different school subjects. Upper secondary school students in Sweden (N = 315) completed the Wonderlic IQ test (Wonderlic, 1992) and the IPIP-NEO-PI test (Goldberg, 1999). A series of hierarchical structural equation models showed that general intelligence, Conscientiousness, Extraversion and Neuroticism were significantly linked to overall academic performance. There were also different findings for a lower level of personality traits, e.g. different personality traits were associated with different subjects. The findings are discussed with regard to previous results on personality traits as determinants of academic performance in different school subjects and the fact that lower level traits may facilitate achievement in particular subjects. 相似文献
10.
In this study, we examined whether reward contrast influences choice between delayed and probabilistic outcomes. Specifically,
we predicted that the subjective value of an intermediate reward would seem relatively larger or smaller, respectively, if
it followed choices involving a smaller or larger reward and would produce corresponding changes in rates of delay and probability
discounting. In Experiment 1, subjects made choices about hypothetical 5,000 or5,000 or 50 outcomes and then made choices about
500 outcomes. Delay-discounting rates for the500 outcomes. Delay-discounting rates for the 500 outcome were larger for Group 5,000 than for Group5,000 than for Group 50, whereas the opposite
result was obtained for probability-discounting rates. In Experiment 2, we used a design that allowed for contrast effects
to be assessed within subjects. Two groups made choices about delayed or probabilistic rewards. After completing question
blocks in which the amount was 5,000 or5,000 or 50, subjects responded to questions with an intermediate amount (475/475/525). For
Group Delay, the present value of the intermediate reward was greater after the 50 block than after the50 block than after the 5,000 block, whereas
the opposite was obtained for Group Probability. The results from both experiments confirmed the predictions of reward contrast
and suggested that the subjective value of a monetary reward varies inversely with the prior reward amount. 相似文献
11.
《Journal of moral education》2012,41(4):247-258
Abstract Previous research has shown that children and adolescents can progress in the stages of moral judgment. However, in the case of adults, Kohlberg (1973) suggested there might be crystallization after the age of 25. The purpose of this study was to establish whether the structure of moral judgment of adults could be systematically encouraged toward change. Thirty‐six adults (three groups) enrolled in an adult sexology course were assessed to determine stage level at the beginning of the course, and post‐tested at the completion of the course. Four dilemmas were used: two for general moral judgment, and two for sexual moral judgment. During the 45‐hour course, subjects were systematically introduced to arguments of a higher stage, and discussions focused on the axiological aspects of the adults’ sexual life. Results show that there was a significant increase in the scores at the post‐test, both in general and in sexual moral judgments; subjects over 25 also increased their scores, thus indicating that the structure of moral judgment is not crystallized after that age. The existence of a differential between general and sexual moral judgments was also corroborated. Implications with regard to the use of the ‘+1 stage’ technique for adult education, and more particularly for adult sexual education, are discussed. 相似文献
12.
In a consummatory experiment patterned after previous work with rats and goldfish, successive negative incentive contrast was sought in didelphid marsupials of two species (Lutreolina crassicaudata andDidelphis albiventris). Half of the subjects of each species were trained from the outset with a 32% sucrose solution and shifted occasionally to a 4% sucrose solution; the rest, which served as controls, were trained only with the 4% solution. The positive results obtained (less response to the 4% solution in the shifted subjects than in the controls) fit the hypothesis, based on comparative work with descendants of older vertebrate lines, that the mechanism of successive negative incentive contrast evolved in a common reptilian ancestor of birds and mammals. 相似文献
13.
R. A. Schibeci 《International Journal of Science Education》2013,35(4):451-459
Summaries English Science teachers’ perceptions of affective‐domainobjectives were gathered through interview procedures. A sample of teachers in Western Australian high schools were the subjects of the study. For the purpose of analysis, a distinction is drawn between attitudes to science (such as ‘enjoyment of science lessons’ and ‘interest in science') and scientific attitudes (such as ‘honesty in reporting data’and ‘tolerance of the views of others'). Analysis of teachers’ views revealed confusion and lack of clarity regarding these science‐related attitudes. However, it is argued that curriculum writers are no clearer in their views. It is suggested that a much clearer, more explicit justification for attitude objectives (of both kinds) needs to be made by curriculum writers. Science teachers need to be provided with greater assistance in clarifying the role of these attitude objectives, as well as assistance with techniques for their assessment. 相似文献
14.
The objective of this project was to develop a multiple choice test of graphing skills appropriate for science students from grades seven through twelve. Skills associated with the construction and interpretation of line graphs were delineated, and nine objectives encompassing these skills were developed. Twenty-six items were then constructed to measure these objectives. To establish content validity, items and objectives were submitted to a panel of reviewers. The experts agreed over 94% of the time on assignment of items to objectives and 98% on the scoring of items. TOGS was first administered to 119 7th, 9th, and 11th graders. The reliability (KR-20) was 0.81. Poorly functioning items were rewritten based on the item difficulty and discrimination data. The revised version of the test was given to 377 7th through 12th grade students. Total scores ranged from 2 to 26 correct (X = 13.3, S.D. = 5.3). The reliability (KR-20) was 0.83 for all subjects and ranged from 0.71 for eighth graders to 0.88 for ninth graders. Point biserial correlations showed 24 of the 26 items above 0.30 with an average value of 0.43. It was concluded from this and other data that TOGS was a valid and reliable instrument for measuring graphing abilities. 相似文献
15.
This study examined the differential effectiveness of traditional and discovery methods of instruction for the teaching of science concepts, understandings about science, and scientific attitudes, to learners at the concrete and formal level of cognitive development. The dependent variables were achievement, understanding science, and scientific attitude; assessed through the use of the ACS Achievement Test (high school chemistry, Form 1979), the Test on Understanding Science (Form W), and the Test on Scientific Attitude, respectively. Mode of instruction and cognitive development were the independent variables. Subjects were 120 Form IV (11th grade) males enrolled in chemistry classes in Lusaka, Zambia. Sixty of these were concrete reasoners (mean age = 18.23) randomly selected from one of the two schools. The remaining 60 subjects were formal reasoners (mean age 18.06) randomly selected from a second boys' school. Each of these two groups was randomly split into two subgroups with 30 subjects. Traditional and discovery approaches were randomly assigned to the two subgroups of concrete reasoners and to the two subgroups of formal reasoners. Prior to instruction, the subjects were pretested using the ACS Achievement Test, the Test on Understanding Science, and the Test on Scientific Attitude. Subjects received instruction covering eight chemistry topics during approximately 10 weeks. Posttests followed using the same standard tests. Two-way analysis of covariance, with pretest scores serving as covariates was used and 0.05 level of significant was accepted. Tukey WSD technique was used as a follow-up test where applicable. It was found that (1) for the formal reasoners, the discovery group earned significantly higher understanding science scores than the traditional group. For the concrete reasoners mode of instruction did not make a difference; (2) overall, formal reasoners earned significantly higher achievement scores than concrete reasoners; (3) in general, subjects taught by the discovery approach earned significantly higher scientific attitude scores than those taught by the traditional approach. The traditional group outperformed the discovery group in achievement scores. It was concluded that the traditional approach might be an efficient instructional mode for the teaching of scientific facts and principles to high school students, while the discovery approach seemed to be more suitable for teaching scientific attitudes and for promoting understanding about science and scientists among formal operational learners. 相似文献
16.
Patrick McCloskey 《教育心理学》1995,15(1):3-10
A total of 127 11 + and 81 12 + subjects drew rectangular solids from memory, after viewing them from different positions. The results were correlated with IQ, vocabulary, verbal judgement and reasoning, and a spatial test with assessment in art and crafts. Unexpectedly high and significant correlations were yielded between drawing solids and cognitive tests involving verbal ability, when compared with correlations between solids, the spatial test and craft subjects, especially for the 12 + group. This appeared contrary to received views on the association of aptitude in drawing with spatial ability. Furthermore, as spatial factors are considered to underpin drawing and craft subjects, a closer association between these, rather than between drawing and verbal ability, was expected. This outcome raised certain theoretical questions concerning drawing and its interaction with perception, language, memory and intellectual development. 相似文献
17.
Hans-Christoph Koller 《Educational theory》2020,70(5):633-651
In this essay, Hans-Christoph Koller presents a concept of transformational processes of Bildung in an attempt to redefine the German notion of Bildung referring to actual social conditions of educational processes. According to this conception, Bildung is a transformation of world- and self-relations that can come about when subjects are confronted with problems for which they have no established routines of engagement. With reference to theories of Pierre Bourdieu, Bernhard Waldenfels, and Ulrich Oevermann, Koller looks for answers to three questions: (1) Which concepts and theories are able to adequately grasp the world- and self-relations of subjects going through processes of Bildung? (2) How can the problems that trigger processes of Bildung and that challenge subjects to transform be determined more precisely? (3) How exactly does the emergence of new figures of world- and self-relations take place when we “successfully” complete a process of Bildung? Finally, the essay concludes with an attempt to clarify the normative implications of this theory. 相似文献
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19.
Patrick C.Y.WOO Samson S.Y.WONG Jade L.L.TENG Kit-Wah LEUNG Antonio H.Y.NGAN Herman TSE Susanna K.P.LAU Kwok-Yung YUEN 《Journal of Zhejiang University. Science. B》2010,11(6):391-401
A straight, non-sporulating, Gram-variable bacillus (HKU24T) was recovered from the blood culture of a patient with metastatic breast carcinoma. After repeated subculturing in BACTEC Plus Anaerobic/F blood culture broth, HKU24T grew on brucella agar as non-hemolytic, pinpoint colonies after 96 h of incubation at 37 °C in an anaerobic environment and aerobic environment with 5% CO2. Growth was enhanced with a streak of Staphylococcus aureus. HKU24T was non-motile and catalase-negative, but positive for alkaline phosphatase, β-glucosidase, and α-glucosidase. It hydrolyzed phenylphosphonate and reduced resazurin. 16S rRNA, groEL, gyrB, recA, and rpoB sequencing showed that HKU24T occupies a distinct phylogenetic position among the Leptotrichia species, being most closely related to Leptotrichia trevisanii. Using HKU24T groEL, gyrB, recA, and rpoB gene-specific primers, fragments of these genes were amplified from one of 20 oral specimens. Based on phenotypic and genotypic characteristics, we propose a new species, Leptotrichia hongkongensis sp. nov., to describe this bacterium. 相似文献
20.
Robert H. Woody 《Counselor Education & Supervision》1971,10(2):112-119
This study was conducted to determine whether significant benefits would be derived from providing counselor trainees with psychoanalytically oriented group psychotherapy. Twenty trainees were divided into 2 therapy groups that met for 30 1.5-hour weekly sessions. Each experimental trainee was matched with a control (no treatment) trainee counterpart on the basis of sex, number of graduate credits, and counseling specialty. The instruments administered were: the Tennessee Self Concept Scale, the Elmore Psychological Anomie Scale, the Edwards Personal Preference Schedule, and the Porter Counseling Inventory. There were no significant differences on the Tennessee Self Concept Scale. On the Elmore Psychological Anomie Scale, the control subjects had an increase on Valuelessness (p = .181). On the Edwards Personal Preference Schedule, the experimental subjects had an increase on Deference (p = .033) and a decrease on Exhibition (p = .190) and Change (p = .091). On the Porter Counseling Inventory, the experimental subjects achieved an increase in Evaluative (p = .112) and Interpretive (p = .034) responses and a decrease in Understanding (p = .083) responses. The relevance to training of both the lack of definitive differences on some of the variables and the significant findings were discussed. The data were interpreted as providing support for the value of a psychotherapeutic experience as part of training programs, particularly those that accept a psychoanalytic orientation. 相似文献