The Teacher''s Role in Facilitating Memory and Study Strategy Development in the Elementary School Classroom     

Barbara E. Moely  Silvia S. Hart  Linda Leal  Kevin A. Santulli  Nirmala Rao  Terry Johnson  Libby Burney Hamilton 《Child development》1992,63(3):653-672

The efforts of 69 elementary school teachers to instruct children in cognitive processing activities were observed. Although the teaching of such activities was relatively infrequent, it varied by grade (occurring more often in grades 2-3 than in higher or lower grades) and by the content of instruction. Teachers of grade 4 and above more often provided rationales for the use of cognitive strategies than did teachers of younger children. In a second study, children of three achievement levels were selected from classrooms in which teachers varied in their use of suggestions regarding cognitive processes. Subsequent to training in the use of a memory strategy, children's performance on a maintenance trial was evaluated: Among average and low achievers, those whose teachers were relatively high in strategy suggestions showed better maintenance and more deliberate use of the trained strategy than did children whose teachers rarely made strategy suggestions. The role of school experience in the development of children's memory skills is discussed.  相似文献   

The dark side of the exceptional: On moral exemplars,character education,and negative emotions     

Maria Silvia Vaccarezza  Ariele Niccoli 《Journal of moral education》2019,48(3):332-345

ABSTRACT

This article focuses on negative exemplarity-related emotions (NEREs) and on their educational implications. In this article, we first argue for the nonexpendability of negative emotions broadly conceived by defending their instrumental and intrinsic role in a good and flourishing life. We make the claim more specific by focusing on the narrower domain of NEREs and argue for their moral and educational significance by evaluating whether they fit the arguments provided in the previous section. We go on to propose three educational strategies to foster NEREs’ positive moral role. In conclusion, we point out that an exemplarist approach to character education would greatly benefit from a more fine-grained account of the emotions involved in the educational process and from a broader perspective on which of these emotions should be taken as valuable for educational purposes.  相似文献   

Assessment of integration method for displacement determination using field accelerometer and geophone data     

F. Lamas-Lopez  Y. J. Cui  S. Costa D’Aguiar  N. Calon 《浙江大学学报(A卷英文版)》2017,18(7):553-566

A conventional French railway track was instrumented with accelerometers and geophones at three depths: sleeper (surface), interlayer (ITL, z=?0.93 m), and transition layer (TL, z=?1.20 m). A linear variable differential transformer (LVDT) was also used to monitor the displacement at the sleeper level. The recorded data allow the integration method (double for accelerometer and simple for geophone) for displacement determination to be assessed. Several questions need to be addressed prior to the selection of an adequate monitoring system: definition of signal filtering processes, influence on results of the different loading wavelengths, repeatability of measurements, train speed and axle load impact and their ranges of validity for each sensor. It was found that the main frequencies that caused more than 95% of the displacement of the monitored materials are in the low frequency range: <25 Hz for trains running up to 200 km/h. For an intercity train, the low frequencies are normally excited by long wavelengths, for instance, those corresponding to the 1/2 coach distance (λ=13.20 m), the bogies distance (λ=6.3 m), and the axle distance (λ=2.8 m). Comparison between the displacements deduced from the records of accelerometer and geophone and obtained from the records of LVDT shows quite consistent results; the mean displacement amplitudes obtained from accelerometers differ by only 20% from the LVDT records. The train speed does not have a strong effect on the obtained differences between sensors. The embedded sensors also gave consistent displacement results for each analysed depth. Moreover, the displacement amplitudes caused by different axle loads (locomotive or passenger coach) are distinguishable for all sensors at all depths. This validates the integration method used for the displacement determination.  相似文献   

Does the Music Matter? Examining Differential Effects of Music Genre on Support for Ethnic Groups     

Heather L. LaMarre  Silvia Knobloch-Westerwick  Gregory J. Hoplamazian 《广播与电子媒介杂志》2013,57(1):150-167

Using data from a post-test only experiment with random assignment, this article examines whether differing music genres influence socially relevant decisions made by listeners. A sample of White college students was exposed to1 of 3 music genres during an ostensible waiting period, and was then asked to allocate funding to projects for different ethnic groups. Three music conditions—radical White power rock, mainstream rock, and Top 40 pop music—were examined to determine whether differential allocations to ethnic groups would emerge following music exposure. As expected, Top 40 pop music exposure led to equal allocations to the various ethnic groups. After listening to mainstream rock, participants allocated significantly higher budgets to White Americans compared to all other race groups. After listening to radical White power rock music, participants also allocated significantly higher budgets to White Americans, but changes in allocations to ethnic minority groups also emerged. Namely, African Americans and Arab Americans received particularly low funding from participants exposed to radical White power rock music.  相似文献   

Quantifying the interdisciplinarity of scientific journals and fields     

F.N. Silva  F.A. Rodrigues  O.N. Oliveira  L. da F. Costa 《Journal of Informetrics》2013,7(2):469-477

There is an overall perception of increased interdisciplinarity in science, but this is difficult to confirm quantitatively owing to the lack of adequate methods to evaluate subjective phenomena. This is no different from the difficulties in establishing quantitative relationships in human and social sciences. In this paper we quantified the interdisciplinarity of scientific journals and science fields by using an entropy measurement based on the diversity of the subject categories of journals citing a specific journal. The methodology consisted in building citation networks using the Journal Citation Reports^® database, in which the nodes were journals and edges were established based on citations among journals. The overall network for the 11-year period (1999–2009) studied was small-world and followed a power-law with exponential cutoff distribution with regard to the in-strength. Upon visualizing the network topology an overall structure of the various science fields could be inferred, especially their interconnections. We confirmed quantitatively that science fields are becoming increasingly interdisciplinary, with the degree of interdisplinarity (i.e. entropy) correlating strongly with the in-strength of journals and with the impact factor.  相似文献   

A Multidimensional Finite Mixture Structural Equation Model for Nonignorable Missing Responses to Test Items     

Silvia Bacci  Francesco Bartolucci 《Structural equation modeling》2013,20(3):352-365

We propose a structural equation model, which reduces to a multidimensional latent class item response theory model, for the analysis of binary item responses with nonignorable missingness. The missingness mechanism is driven by 2 sets of latent variables: one describing the propensity to respond and the other referred to the abilities measured by the test items. These latent variables are assumed to have a discrete distribution, so as to reduce the number of parametric assumptions regarding the latent structure of the model. Individual covariates can also be included through a multinomial logistic parameterization for the distribution of the latent variables. Given the discrete nature of this distribution, the proposed model is efficiently estimated by the expectation–maximization algorithm. A simulation study is performed to evaluate the finite-sample properties of the parameter estimates. Moreover, an application is illustrated with data coming from a student entry test for the admission to some university courses.  相似文献   

Does biological sex impact intestinal epithelial injury,small intestine permeability,gastrointestinal symptoms and systemic cytokine profile in response to exertional-heat stress?     

Rhiannon M. J. Snipe  Ricardo J. S. Costa 《Journal of sports sciences》2013,31(24):2827-2835

ABSTRACT

This study aimed to determine the influence of biological sex on intestinal injury, permeability, gastrointestinal symptoms, and systemic cytokine profile in response to exertional-heat stress. Male (n= 13) and eumenorrheic female (n= 11) endurance runners completed 2 h running at 60% V?O_2max in 35°C. Blood samples were collected pre- and post-exercise and during recovery to determine plasma intestinal fatty-acid binding protein (I-FABP) and systemic cytokine profile. Urinary lactulose:L-rhamnose ratio was used to determine small intestine permeability. I-FABP increased 479% pre- to post-exercise (p< 0.001), with no difference between sexes (p= 0.432). No differences between sexes were observed for small intestine permeability (p= 0.808), gut discomfort, total, upper- and lower-gastrointestinal symptoms. However, males reported significantly higher flatulence (p= 0.049) and abdominal stitch (p= 0.025) compared to females. IL-6, IL-8, IL-10 and IL-1ra increased pre- to post-exercise (p< 0.05), with no difference between sexes. However, IL-1β increased post-exercise in males only, and was higher in males compared to females (p= 0.044). Findings suggest that when females are in the follicular phase of the menstrual cycle, biological sex has no effect on intestinal epithelial injury and permeability, and minimal effect on gastrointestinal symptoms and systemic cytokine profile in response to exertional-heat stress.  相似文献   

Contributions from citizen science to science education: an examination of a biodiversity citizen science project with schools in Central Europe     

Julia Kelemen-Finan  Martin Scheuch  Silvia Winter 《International Journal of Science Education》2013,35(17):2078-2098

ABSTRACT

Despite the rising popularity of Citizen Science (CS) projects, there is little empirical evidence for effects on learning outcomes, particularly when young people are involved. It is also often not clear how CS projects are linked to science education (SE) research. The aim of this study was to examine biodiversity CS projects in an outdoor school class context and to measure the effects on individual learning outcomes (ILOs) with a perspective for SE. Five learning outcomes considered important for CS were tested: interest, self-efficacy/mastery, motivation, behaviour and attitude. These ILOs were measured via eight different scales and tested in an evaluation study of a large CS project with 428 students aged 8–18. Students recorded hedgehogs, wild bee activity, birds and butterflies in gardens. Results showed that students’ interest and motivation, as well as perceived mastery increased during the project. Most remarkably, positive attitudes towards wild animals, natural gardens and biodiversity rose significantly. For most ILOs there were significant differences between age groups: Primary school students showed the highest ILOs and also provided most database entries. The authors describe how well biodiversity CS projects contribute to SE aims and how discrepancies between educational and scientific aims in CS projects may be addressed.  相似文献   

Knowledge,its Application,and Attitudes Associated with the Reading of Diverse Genres of Science Texts     

Rogerio Gonçalves Nigro  Silvia Frateschi Trivelato 《International Journal of Science Education》2013,35(16):2529-2564

The purpose of this article is to assess the knowledge, application of knowledge, and attitudes associated with the reading of different genres of expository science texts. We assigned approximately half of a sample consisting of 220 students 14–15 years of age, chosen at random, to read an excerpt from a popular scientific text, and the other half to read an excerpt from a textbook addressing the same topic. Readers took knowledge and application tests immediately after the reading and again 15 days later. Students also took knowledge and reading proficiency pre-tests, and attitude tests related to the selected texts. Overall, girls scored higher than boys and readers of the popular scientific text scored higher than their colleagues who read the textbook excerpt. We noted interaction between ‘reader gender’ and ‘genre of the text read’ in terms of long-term learning based on the reading. Attitude regarding the text read appears as an important factor in explaining behavior of boys who read the popular scientific text. Surprisingly, knowledge and application test scores were not statistically different among girls with different degrees of reading proficiency who read the textbook excerpt. In addition, on the application tests, among the boys who read the popular scientific text, good readers scored lower than their colleagues who read the textbook excerpt. In our opinion, this study can serve to show that ‘reading in science education’ is not a trivial matter and we feel that the subject merits more in-depth investigation.  相似文献   

Navigating the complexity of qualitative research in postmodern contexts: assemblage,critical reflexivity,and communion as guides     

Silvia Cristina Bettez 《International journal of qualitative studies in education》2013,26(8):932-954

For graduate students and other emerging qualitative researchers, the ever-evolving and sometimes conflicting perspectives, methodologies, and practices within various post-positivist frameworks (e.g. feminist, critical, Indigenous, participatory) can be overwhelming. Qualitative researchers working within postmodern contexts of multiplicity and ambiguity are tasked with working through challenges – related to methods, interpretation, and representation – throughout the research process. Through examining related literature and incorporating my own experiences, I explore ethical dilemmas that social justice-oriented qualitative researchers may encounter as a result of conflicting multiplicities of difference among researcher(s), participants, and readers. Such dilemmas include incongruent interpretations between participants and researchers, and participants’ and researchers’ conflicting desires about what should be shared, intercultural (mis)interpretations, rapport issues, and conflicts between research life and home life. I consider how combining the practices of attending to assemblages, engaging in critical reflexivity, and centralizing communion may be useful in navigating relationships and ethical dilemmas in qualitative research.  相似文献