排序方式： 共有13条查询结果，搜索用时 46 毫秒
1.
The present study examines the development of sight word reading in young children by examining changes in their self‐reported reading strategies over time. A sample of 65 five to seven year olds were asked to read 40 real word items, all carefully matched for letter length and word frequency, on three separate occasions. Changes in the children’s word identifications were measured using immediately retrospective verbal self‐reports. Overall, the results showed some variability in the children’s self‐reported reading strategies. Over time the children relied less on phonological strategies and moved towards reliance on directly retrieving words from memory. This change was most evident in the older children; while both year groups showed similar patterns of shifting reliance from explicit phonological strategies to retrieval, this shift was simply less frequent among the younger children. An analysis of word‐specific changes in reading strategies showed that the older children had a better sight vocabulary for more complex word items. These findings provide further support for Ehri’s mediated phase theory in explaining children’s development in learning to read. 相似文献
2.
Emily Coyne Lee Farrington‐Flint Jean Underwood James Stiller 《Journal of Research in Reading》2012,35(4):393-410
The current work examines children's sensitivity to rime unit spelling–sound correspondences within the context of early word reading as a way of assessing word‐specific influences on early word‐reading strategies. Sixty 6–7‐year‐olds participated in an experimental reading task that comprised word items that shared either frequent or infrequent rime unit correspondences. Retrospective self‐reports were taken as measures of strategy choice. The results showed that the children were more accurate in identifying word items that shared a common rime unit (consistent items) when compared with those containing infrequent rime units (unique and exception items). Moreover, while nonlexical (phonological) attempts were most frequently applied across all word types, these resulted in lower levels of accuracy, especially for the exception word items. The current data support the argument that children are increasingly sensitive to rime unit sound–spelling correspondences during the early stages of their word reading and the nature of these word‐specific orthographic representations shape their reliance on using particular lexical or non‐lexical‐based word‐reading strategies. 相似文献
3.
4.
This paper analyzes the productivity development in the German public theater sector for the seasons 1991/1992 to 2005/2006.
Using a stochastic distance frontier approach that allows decomposing total factor productivity change into different sources,
we examine (a) whether Baumol’s cost-disease hypothesis is valid in this sector and (b) if so, whether any negative influence
of the cost-disease effect on productivity can be compensated by efficiency gains. The findings indicate an increase in real
unit labor cost as a result of rising wage rates and thus do support the cost-disease hypothesis. Further, increasing returns
to scale are observed for the majority of the theaters, implying that significant efficiency gains can be realized by the
exploitation of scale economies. However, because of the increasing unit labor cost and an increasing scale inefficiency,
we find an overall decrease in average productivity of about 8% within the sample period. 相似文献
5.
In the present experiments, we investigated the effects of mindfulness on behavioral extinction and resurgence. Participants received instrumental training; either they received FI training (Experiment 1), or they were trained to emit high rates and low rates of response via exposure to a multiple VR yoked-VI schedule prior to exposure to a multiple FI FI schedule in order to alter their rates of responding learned during Experiment 2. Participants were then exposed to either a focused- (mindfulness) or an unfocused-attention induction task. All participants were finally exposed to an extinction schedule in order to determine whether a mindfulness induction task presented immediately prior to extinction training affected extinction (Experiment 1) and behavioral resurgence (Experiment 2). During the extinction phase, the rates of responding were higher in the control group than in the mindfulness group, indicating that the mindfulness group was more sensitive to the contingencies and, thus, their prior performance extinguished more readily (Experiment 1). Moreover, rates of response in the extinction components less precisely reflected previous training in the mindfulness group, suggesting less resurgence of past behaviors after the mindfulness induction (Experiment 2). 相似文献
6.
Anne-Kathrin Brebeck Andreas Deussen Ursula Range Costantino Balestra Sinclair Cleveland 《Journal of sports sciences》2018,36(6):605-612
Bubble formation during scuba diving might induce decompression sickness.
This prospective randomised and double-blind study included 108 advanced recreational divers (38 females). Fifty-four pairs of divers, 1 breathing air and the other breathing nitrox28 undertook a standardised dive (24 ± 1 msw; 62 ± 5min) in the Red Sea. Venous gas bubbles were counted (Doppler) 30–<45 min (early) and 45–60 min (late) post-dive at jugular, subclavian and femoral sites.
Only 7% (air) vs. 11% (air28®) (n.s.) were bubble-free after a dive. Independent of sampling time and breathing gas, there were more bubbles in the jugular than in the femoral vein. More bubbles were counted in the air-group than in the air28-group (pooled vein: early: 1845 vs. 948; P = 0.047, late: 1817 vs. 953; P = 0.088). The number of bubbles was sex-dependent. Lastly, 29% of female air divers but only 14% of male divers were bubble-free (P = 0.058).
Air28® helps to reduce venous gas emboli in recreational divers. The bubble number depended on the breathing gas, sampling site and sex. Thus, both exact reporting the dive and in particular standardising sampling characteristics seem mandatory to compare results from different studies to further investigate the hitherto incoherent relation between inert gas bubbles and DCS. 相似文献
7.
This study examined the role of variability and change in children’s strategy performance within the context of spelling. The spelling ability of 34 eight‐ to nine‐year‐olds was examined using an experimental spelling task comprising 45 items, which varied with regard to rime unit frequency. The spelling task incorporated a series of consistent, unique, and exception word items. Children were tested on the same spelling task on three separate occasions over a period of three months. Performance was examined using immediately retrospective verbal self‐reports after the presentation of every word. The findings showed that children spelt words strategically and were adaptive in their strategy selection, showing a general change from using less efficient backup strategies to using more efficient direct retrieval methods over time. Finally, while those less skilled in spelling showed a greater reliance on less efficient backup strategies, the skilled spellers mainly retrieved the correct spellings from memory. However, accuracy only improved across time intervals for each skill group when spelling unique word items. Overall, the findings illustrate the benefits of using a detailed microgenetic approach to assess the progress children make in learning to spell. 相似文献
8.
In recent years the economic performance of public non-profit sectors such as cultural services has become an interesting
economic issue. This is due to the high dependence of cultural institutions on public funding on the one hand and the increasing
cost-pressure on public budgets on the other hand. In order to achieve an efficient, cost-minimizing resource allocation public
authorities who decide on the distribution of public budgets need reliable performance indicators. Against this background,
this paper analyzes the efficiency of German public theaters for the seasons 1991/1992–2005/2006. Using a stochastic frontier
analysis approach, we test whether the assumption of cost-minimizing behavior is reliable in this sector. Moreover, several
panel data models that differ in their ability to account for unobserved heterogeneity are applied to evaluate the impact
of unobserved heterogeneity on the efficiency estimates. The results indicate that the cost-minimizing assumption cannot be
maintained. Consequently, an efficiency analysis based on a cost function approach seems inappropriate in the case of German
public theaters. Further, we find a considerable unobserved heterogeneity across the theaters, which causes a significant
variation in the models’ efficiency estimates. This implies that failing to account for unobserved heterogeneity leads to
biased efficiency values. Overall, our results suggest that there is still space for improvement in the employment of resources
in the sector. 相似文献
9.
ABSTRACT The paper discusses and analyzes the coverage of scientific serials in Google Scholar (GS). The focus is on an exploratory study. The study shows deficiencies in the coverage and up-to-dateness of the GS index. Furthermore, the study points up which Web servers are the most important data providers for this search service and which information sources are highly represented. There is a relatively large gap in Google Scholar's coverage of German literature as well as weaknesses in the accessibility of Open Access content. 相似文献
10.