Effect of intertrial interval on variable-interval discrete-trial barpressing

In seven experiments, an effect of the intertriai interval (ITI) duration on barpressing by rats was studied. A stimulus signaled a 15-sec variable-interval trial. The first response after the interval elapsed turned the stimulus off and was rewarded with food. Trials were separated by long (about 300 sec) or short (about 10 sec) ITIs. A within-subjects design established that response rate on trials after long ITIs was lower than that after short ITIs (Experiments 1 and 3–7). The effect was not cumulative (the effect of one and five consecutive short ITIs was the same). Response rate after short and long ITIs was the same when a between-subjects design was used (Experiment 2). Response rate was higher after 160-sec ITIs than after 300-sec ITIs, suggesting that the ITI duration at which all longer ITIs are treated the same (i.e., the upper limit) is greater than 160 sec (Experiment 3). When food, the trial stimulus, a novel stimulus, or a familiar stimulus never paired with food, was presented 10 sec before the next trial during some of the long ITIs, response rate on the next trial was similar to that found after 10-sec ITIs (Experiments 4–6). This similarity suggested that these events could mark the start of the ITI. However, the familiar stimulus did so only when it reliably predicted that the next trial would occur after a short interval. The effect of ITI duration on responding was apparently attributable to response latency. Response latency was greater after long ITIs, but once responding began, it was similar after long and short ITIs (Experiment 7).     

Limitations of the Score-Difference Method in Detecting Cheating in Recognition Test Situations

An examination is made of a score-difference model for the detection of cheating based on the difference between two scores for an examinee: one based on the appropriate scoring key and another based on an alternative, inappropriate key. The normal approximation to the binomial distribution model is used to predict characteristics of chance test score distributions and difference score distributions. Results show that students' difference scores can vary widely by chance alone, even for short tests. It is argued that the score-difference method could falsely accuse many students as cheaters. It is suggested that the score-difference method is seriously flawed and has little to recommend it.     

Shifting the blame in higher education – social inclusion and deficit discourses

The principles of social inclusion have been embraced by institutions across the higher education sector but their translation into practice through pedagogy is not readily apparent. This paper examines perceptions of social inclusion and inclusive pedagogies held by academic staff at an Australian university. Of specific interest were the perceptions of teaching staff with regard to diverse student populations, particularly students from low socio-economic (LSES) backgrounds, given the institution's reasonably high proportion of LSES student enrolment (14%). A mixed-method approach was utilised: (i) in-depth interviews with a representative sample of academic staff and (ii) an online survey targeting all academic staff across the institution. The results point to the dual responsibilities of students and institutions in enacting inclusivity in order to move beyond reductive standpoints that simply apportion blame.     

Primary schools and network governance: A policy analysis of reception baseline assessment

Primary school reception baseline assessment was designed to produce a single ‘baseline’ data figure on the basis of which young children's progress across primary school could be measured and accounted for. This paper suggests that within the context of punitive performativity, head teachers might be considered ‘irresponsible’ if not engaging with the new accountability measure in its voluntary year. Using DfE‐accredited baseline assessment providers blurred the distinctions between not‐for‐profit social enterprises, digital policy innovation labs, edu‐business, and the state. It is argued that through a process of networked governance, these cross‐sectoral organisations successfully enticed some primary schools with the ‘moral economy’ of using baseline assessment. It is argued that baseline's simplistic reductionism allowed for the economisation of early years education assessment and for its commercialisation of comparison. This paper reports on a sample of five head teachers, taken from a much larger study that used a mixed‐methods approach involving a nationwide survey (n=1131) and in‐depth interviews with reception staff and head teachers in five geographically disparate primary schools. Baseline assessment was ‘withdrawn’ by the DfE in April 2016, quite possibly because of campaigns by early years organisations, the government's own report showing that the three separate baseline datasets were incompatible, and national research funded by the teachers’ unions, a small part of which is reported upon here.     

A Comparison of Online,Video Synchronous,and Traditional Learning Modes for an Introductory Undergraduate Physics Course

While the equivalence between online and traditional classrooms has been well-researched, very little of this includes college-level introductory Physics. Only one study explored Physics at the whole-class level rather than specific course components such as a single lab or a homework platform. In this work, we compared the failure rate, grade distribution, and withdrawal rates in an introductory undergraduate Physics course across several learning modes including traditional face-to-face instruction, synchronous video instruction, and online classes. Statistically significant differences were found for student failure rates, grade distribution, and withdrawal rates but yielded small effect sizes. Post-hoc pair-wise test was run to determine differences between learning modes. Online students had a significantly lower failure rate than students who took the class via synchronous video classroom. While statistically significant differences were found for grade distributions, the pair-wise comparison yielded no statistically significance differences between learning modes when using the more conservative Bonferroni correction in post-hoc testing. Finally, in this study, student withdrawal rates were lowest for students who took the class in person (in-person classroom and synchronous video classroom) than online. Students that persist in an online introductory Physics class are more likely to achieve an A than in other modes. However, the withdrawal rate is higher from online Physics courses. Further research is warranted to better understand the reasons for higher withdrawal rates in online courses. Finding the root cause to help eliminate differences in student performance across learning modes should remain a high priority for education researchers and the education community as a whole.     

Classroom and playground interaction of students with and without disabilities

The classroom and playground behaviors of students with disabilities, in an integrated classroom, are frequently cited as reasons for rejection of these students by their regular-class peers. We compared the classroom and playground behavior of 95 students with mild disabilities with that of 95 students without disabilities, age and sex matched, and enrolled in the same classes. The children, age 8-13 years, attended state government elementary schools. Behaviors were observed using a time-sampling method with nine categories of behavior in each setting. The behavior of both groups of students was in many ways similar, regardless of the presence of disabilities.     

An examination of the vocational education and training reform debate in Southern Africa

This paper explores the role that vocational education and training (VET) can play in Southern African responses to major socio‐economic challenges. It argues that this role will be most pronounced if it is articulated within a broader educational and economic vision that is shared by a range of stakeholders in society and supported by an adequate funding base, effective information systems and qualified and motivated planners and implementers. However, it cautions that it is also important to remember that VET reform will not in itself transform economies or societies. The paper argues that there is considerable convergence within Southern Africa around 10 themes of VET reform. It argues that there is much that is of merit in the current broad package for VET transformation but that it is essential that it is carefully critiqued and that elements are adapted to national circumstances and visions.     

How might Covid-19 affect the biology curricula of the future? Two principles for curriculum developers to consider

PROSPECTS - Understanding the lifestyle changes that authorities have requested or required in response to Covid-19 requires some biological knowledge. Therefore, articulations of intended biology...     

Mechanization of library procedures in the medium-sized medical library. IV. Physical characteristics of the acquisitions-cataloging record

Acquisitions-Cataloging records stored on magnetic tape by the Washington University School of Medicine Library were examined to determine frequency and average length of record components and their alphabetization requirements in a book catalog. Data from this study of 4,708 records will be used in adaptation of the Library's computer-based cataloging system to greater machine capabilities. The first of these two papers compares measurements found for WUSML records with those reported in studies of conventional catalog cards. The number of sorting positions used to alphabetize entries and causes of sort failure are examined in the second paper (Number V) which will be found on page 71 of this issue of the BULLETIN.     

Theorising the value of collage in exploring educational leadership

This article contributes to theorising the value of collage as a methodological approach. It begins with a discussion of the methodological difficulties of exploring hidden meanings and individual experience through the research process. The illuminative potential of arts‐based methodologies in qualitative research is then investigated. The article makes the case for the specific advantages of using collage to explore the experience of leadership, through a discussion of two collage‐based studies. It proposes a variant of the ‘think aloud’ process, used in conjunction with collage, as a route to producing deep understandings of the multiple ways in which leadership is experienced and understood as a social process. The argument is made that collage enables the accessing and sharing of profound levels of experience not accessible through words alone, and considers the impact of the physicality of collage on its potential to release these profound insights. A five‐stage process for the analysis of collage is then set out. The article concludes by offering a theory of the value of collage as a methodological approach to exploring experiences of leadership, through use of the concepts of physicality, wholeness and participant agency.