Peripheral and central     

David Knight 《Metascience》2015,24(1):103-105

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The Last Castle: <Emphasis Type="Italic">Better Beach Books</Emphasis> Update     

David Randall 《Academic Questions》2016,29(3):311-317

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Components of Variance of Scales With a Bifactor Subscale Structure From Two Calculations of α     

David Andrich 《Educational Measurement》2016,35(4):25-30

Since Cronbach's (1951) elaboration of α from its introduction by Guttman (1945), this coefficient has become ubiquitous in characterizing assessment instruments in education, psychology, and other social sciences. Also ubiquitous are caveats on the calculation and interpretation of this coefficient. This article summarizes a recent contribution (Andrich, 2015) on the use of coefficient α which complements these many caveats. It shows that in the presence of a simple bifactor structure of a scale where unique components of variance are homogeneous in magnitude, three components of variance and the common latent common correlation among the subscales can be calculated from the ratio of two calculations of α, one at the level of the items, the other at the level of the subscales. It was suggested that these two ready calculations and their interpretation, and the reporting of all four indices in the analysis of scales with a subscale structure, would reduce the misinterpretation of this coefficient. An illustrative example of the application of the calculations is also shown.  相似文献   

Using Consumer Data to Illustrate How the Library Channel Drives Digital Sales     

David Burleigh 《Publishing Research Quarterly》2017,33(4):380-391

The library channel is often underappreciated as a key part of a publisher’s business strategy. In an age where publishers are constantly seeking new revenue and marketing opportunities, presence in the library—digitally—can yield significant growth. This paper examines the library channel, its business model based on library lending, the performance of eBooks and audiobooks across all subjects, and consumer reading behavior. Digital Book Clubs, a relatively new phenomenon, are also defined and illustrated with examples demonstrating the library’s valuable role in increasing discoverability and ultimately sales.  相似文献   

Information within a system of the basic categories of a planetary analysis     

E. P. Semenyuk 《Scientific and Technical Information Processing》2017,44(1):1-14

At the turn of the 21st century a methodological analysis of the planetary development of civilization became a topical issue in world science. Such an analysis is based on a framework of categorical concepts adopted for active use in globalistics, namely, the biosphere, sociosphere, technosphere, noosphere, and infosphere. The given context provides a new perspective on the phenomenon of information and informatics, with the latter having experienced increasing demands as a popular scientific discipline in the field of information. In the contemporary setting, these phenomena can be adequately evaluated only in connection with the above concepts.  相似文献   

Administrative Bloat at the University of Kentucky: A Case Study on Retention     

J. David Johnson 《Academic Questions》2017,30(4):460-470

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Physics in upper secondary schools in Denmark     

H. Nielsen  P. V. Thomsen 《International Journal of Science Education》2013,35(2):189-202

This article is the third in a series reporting on the changes in attitudes and interests‐‐mainly with respect to physics‐of several hundred students as they proceed through the Danish upper secondary school (Gymnasium). It concentrates on the results of the final investigation which took place shortly before the students leave the school.  相似文献   

Behavioural inhibition and hyperactivity: a commentary from alternative perspectives     

J. P. Das  Timothy Papadopoulos 《欧洲特需教育杂志》2013,28(2):183-195

Attention disorders in the school population include attention deficit, hyperactivity and conduct disorders. A key concept for distinguishing hyperactive from attention disorders is behavioural inhibition as advocated by Barkley, a prominent American researcher. However, the concept itself needs to be understood because, as argued in this paper, there are two kinds of inhibition: Pavlov's original concept and the American one. These should be differentiated if the abnormal conditions associated with attention and hyperactivity are to be rationally connected to cognitive characteristics, rather than to be solely based on clinical symptoms and behavioural ratings. We suggest a consensus on the concept of inhibition and a unified view of attention disorders integrating cognitive and behavioural manifestations. Finally, the importance of basing remediation on a theoretically supported and rationally derived set of cognitive training tasks for the amelioration of inattention and hyperactivity is offered.  相似文献   

Books of the Month: Kidvid     

John P. Murray 《Communication Booknotes Quarterly》2013,44(5):50-51

TELEVISION AND BEHAVIOR: TEN YEARS OF SCIENTIFIC PROGRESS AND IMPLICATIONS FOR THE EIGHTIES (Washington: Government Printing Office, 1982—price not given, paper, two vols)

John P. Murray, TELEVISION & YOUTH: 25 YEARS OF RESEARCH & CONTROVERSY (Bowys Town Center for the Study of Youth Development, Research Use and Public Service Division, Boys Town, Neb. 68010—$10.00, paper)

TELEVISION'S IMPACT ON CHILDREN AND ADOLESCENTS: A SPECIAL INTEREST RESOURCE GUIDE IN EDUCATION (Oryx Press, 2214 N. Central at Encanto, Phoenix, Az. 85004—price not given, paper)  相似文献   

The effect of context on students’ reasoning about forces     

David Palmer 《International Journal of Science Education》2013,35(6):681-696

When attempting to solve closely related problems in science, students will often respond to irrelevant contextual features in the questions rather than generalizing their conceptions over the range of relevant situations. In this study, a group of 40 students (one group of 15‐16‐year‐olds and another of preservice science teachers) was surveyed and interviewed to determine the effect of context on the reasoning which they used to solve problems concerning the forces acting on objects in linear motion. It was found that the younger group of students were influenced by contextual features such as the speed, weight and position of the moving object, the direction of the motion and their own personal experience of the context. There were clearly two types of contextual effects ‐‐ primary and secondary, which are described. The older group of students was generally less affected by context and thus more consistent in their reasoning.  相似文献