On the Issue of Item Selection in Computerized Adaptive Testing With Response Times

Many standardized tests are now administered via computer rather than paper‐and‐pencil format. The computer‐based delivery mode brings with it certain advantages. One advantage is the ability to adapt the difficulty level of the test to the ability level of the test taker in what has been termed computerized adaptive testing (CAT). A second advantage is the ability to record not only the test taker's response to each item (i.e., question), but also the amount of time the test taker spends considering and answering each item. Combining these two advantages, various methods were explored for utilizing response time data in selecting appropriate items for an individual test taker. Four strategies for incorporating response time data were evaluated, and the precision of the final test‐taker score was assessed by comparing it to a benchmark value that did not take response time information into account. While differences in measurement precision and testing times were expected, results showed that the strategies did not differ much with respect to measurement precision but that there were differences with regard to the total testing time.     

The assault on the professions and the restructuring of academic and professional identities: a Bernsteinian analysis

This paper draws upon a range of ideas and concepts developed by the British sociologist Basil Bernstein to examine recent challenges and changes encountered by members of professional occupations, including those who teach and research in higher education. The paper discusses and seeks to develop Bernstein's analysis of how particular structurings of knowledge may be related to the formation of occupational identities centred in what Bernstein refers to as ‘inwardness’ and ‘inner dedication’. It then examines a range of challenges to such identities—particularly those arising from the ‘regionalisation’ of knowledge and from ‘genericim’. The paper concludes by assessing the prospects for perpetuating such identities in an era of increasing marketization and managerialism.     

“Asking,Learning, Seeking Out”: An Exploration of Data Literacy for Teaching

Abstract

The current study explored preservice and inservice teachers’ perspectives on data literacy for teaching. Semi-structured interviews were employed with 12 teacher candidates in elementary and special education. The findings revealed participants’ misconceptions regarding formative and summative data; their understanding of the value of formative data; perceptions of challenges related to data literacy for teaching including time, making sense of data, and reliability and validity; and candidates’ preferences for authentic data literacy instruction.     

Redefining Authentic Research Experiences in Introductory Biology Laboratories and Barriers to Their Implementation

Incorporating authentic research experiences in introductory biology laboratory classes would greatly expand the number of students exposed to the excitement of discovery and the rigor of the scientific process. However, the essential components of an authentic research experience and the barriers to their implementation in laboratory classes are poorly defined. To guide future reform efforts in this area, we conducted a national survey of biology faculty members to determine 1) their definitions of authentic research experiences in laboratory classes, 2) the extent of authentic research experiences currently experienced in their laboratory classes, and 3) the barriers that prevent incorporation of authentic research experiences into these classes. Strikingly, the definitions of authentic research experiences differ among faculty members and tend to emphasize either the scientific process or the discovery of previously unknown data. The low level of authentic research experiences in introductory biology labs suggests that more development and support is needed to increase undergraduate exposure to research experiences. Faculty members did not cite several barriers commonly assumed to impair pedagogical reform; however, their responses suggest that expanded support for development of research experiences in laboratory classes could address the most common barrier.     

The role of the entry-and-stretch phase at the different paces of race in front crawl swimming

The aim of this study was to determine the role played by the entry-and-stretch phase in the coordination of swimming, at the different paces of race. Three national level swimmers (two men and one woman) were recorded, in lateral and bottom views, in three swimming paces: sprint (50 m and 100 m), middle-distance (200 m and 400 m) and long-distance (800 m and 1500 m). Anatomical landmark positions were obtained by manual digitalisation of the videos. Computational fluid dynamics and experimental studies (with a strain gauge balance and particle image velocimetry method) were used to measure and to calculate the external forces applied to the hand and to the forearm and to visualise the flow around the profile. Entry-and-stretch is the phase which varies the most according to the swimming pace. This phase can be decomposed into two sub-phases: one, the extension forward coordinated with the insweep of the opposite arm, and another one, the rotation downward coordinated with the upsweep. Results show that, at the three paces, this phase is not propulsive and could contribute essentially to maintain the horizontal balance of the body.     

Detecting bias in meta-analyses of distance education research: big pictures we can rely on

This article has two interrelated purposes. The first is to explain how various forms of bias, if introduced during any stage of a meta-analysis, can provide the consumer with a misimpression of the state of a research literature. Five of the most important bias-producing aspects of a meta-analysis are presented and discussed. Second, armed with this information, we examine 15 meta-analyses of the literatures of distance education (DE), online learning (OL), and blended learning (BL), conducted from 2000 to 2014, with the intention of assessing potential sources of bias in each. All of these meta-analyses address the question: “How do students taking courses through DE, OL, and BL compare to students engaged in pure classroom instruction in terms of learning achievement outcomes?” We argue that questions asked by primary researchers must change to reflect issues that will drive improvements in designing and implementing DE, OL, and BL courses.     

How Canadian universities use social media to brand themselves

This paper explores social media marketing strategies applied by Canadian universities as a tool for institutional branding, recruitment and engagement of home and international students. The target sample involves the total population of Canadian university-status institutions (N = 106). Qualitative data were collected from two major social networking websites, Facebook and Twitter, over the span of six months to provide a comprehensive picture. Additionally, student enrolment data were compiled with the purpose of associating social media implementation with fluctuations of student enrolment. Results reveal that the Twitter platform is generally much more popular to carry conversations, but that Facebook remains the preferred website for university-initiated postings; most of these university-led postings, whether on Twitter or Facebook, relate to campus/student news and events. Findings point to institutions as only one of many message generators, while students and a host of third parties have become the dominant ones.     

博物馆观众研究简史(三)——20世纪90年代至今

博物馆观众研究领域最早的成果可以追溯到吉尔曼(Gilman)在1911年的研究工作,本文对观众评估研究的关注对象与问题进行了历史性的批判分析。本研究揭示了各类研究建立的范式,包括对实施机制的说明、对评估客观性的审问、对文化民主化研究和营销相关研究之间不协调性的强调。本文结合多年经济危机和理性化带来的影响,介绍了20世纪90年代至今博物馆观众研究的工具化,并结合观众研究的他律性的特点进行分析,提出了这一领域面临的四大挑战。     

Media Production

Bob Westmoreland's Teleproduction Shortcuts: A Manual for Low-Budget Television Production in a Small Studio (Norman: University of Oklahoma Press, 1974—$10.95)

Joseph F. Robinson's Videotape Recording.: Theory and Practice (New York: Hastings House, 1975– $18.50)

L. Bernard Happe's Your Film & the Lab (New York: Hastings House, 1974 —$11.50/6.50)