Considering student retention as a complex system: a possible way forward for enhancing student retention

This study uses multilayer minimum spanning tree analysis to develop a model for student retention from a complex system perspective, using data obtained from first-year engineering students at a large well-regarded institution in the European Union. The results show that the elements of the system of student retention are related to one another through a network of links and that some of these links were found to be strongly persistent across different scales (group sizes). The links were also seen to group together in different clusters of strongly related elements. Links between elements across a wide range of these clusters would have system-wide influence. It was found that there were no elements that are both persistent and have system-wide effects. This complex system view of student retention explains why actions to enhance student retention aimed at single elements in the system have had such limited impact. This study therefore points to the need for a more system-wide approach to enhancing student retention.     

The Python Project: A Unique Model for Extending Research Opportunities to Undergraduate Students

Undergraduate science education curricula are traditionally composed of didactic instruction with a small number of laboratory courses that provide introductory training in research techniques. Research on learning methodologies suggests this model is relatively ineffective, whereas participation in independent research projects promotes enhanced knowledge acquisition and improves retention of students in science. However, availability of faculty mentors and limited departmental budgets prevent the majority of students from participating in research. A need therefore exists for this important component in undergraduate education in both small and large university settings. A course was designed to provide students with the opportunity to engage in a research project in a classroom setting. Importantly, the course collaborates with a sponsor''s laboratory, producing a symbiotic relationship between the classroom and the laboratory and an evolving course curriculum. Students conduct a novel gene expression study, with their collective data being relevant to the ongoing research project in the sponsor''s lab. The success of this course was assessed based on the quality of the data produced by the students, student perception data, student learning gains, and on whether the course promoted interest in and preparation for careers in science. In this paper, we describe the strategies and outcomes of this course, which represents a model for efficiently providing research opportunities to undergraduates.     

Socioeconomic status and health in adolescents: the role of stress interpretations

The role of psychological interpretations in the relationship between low socioeconomic status (SES) and physiological responses was tested. One hundred high school students (ages 15–19) watched videos of ambiguous and negative life situations, and were interviewed about their interpretations. Lower SES was associated with greater threat interpretations during ambiguous (but not negative) situations and with greater diastolic blood pressure and heart rate reactivity. Threat interpretations partially mediated relationships between SES and reactivity. General life events (e.g., lack of positive life events), rather than specific life events (e.g., exposure to violence), partially explained the relationship between low SES and threat interpretations. Results suggest that the larger social environment helps explain how adolescents approach new social situations, which in turn has implications for adolescent physical health.     

Regular Feedback from Student Ratings of Instruction: Do College Teachers Improve their Ratings in the Long Run?

The authors examined whether feedback from student ratings of instruction not augmented with consultation helps college teachers to improve their student ratings on a long-term basis. The study reported was conducted in an institution where no previous teaching-effectiveness evaluations had taken place. At the end of each of four consecutive semesters, student ratings were assessed and teachers were provided with feedback. Data from 3122 questionnaires evaluating 12 teachers were analyzed using polynomial and piecewise random coefficient models. Results revealed that student ratings increased from the no-feedback baseline semester to the second semester and then gradually decreased from the second to the fourth semester, although feedback was provided after each semester. The findings suggest that student ratings not augmented with consultation are far less effective than typically assumed when considered from a long-term perspective.     

Confidence and reliability measures in speaker verification

Speaker verification is a biometric identity verification technique whose performance can be severely degraded by the presence of noise. Using a coherent notation, we reformulate and review several methods which have been proposed to quantify the uncertainty in verification results, some with a view to coping with the effects of mismatched training-testing environments. We also include a recently proposed method, which is firmly rooted in a probabilistic approach and interpretation, and explicitly measures signal quality before assigning a reliability value to the speaker verification classifier's decision. We evaluate the performance of the confidence and reliability measures over a noisy 251-users database, showing that taking into account signal-domain quality can lead to better accuracy in prediction of classifier errors. We discuss possible strategies for using the measures in a speaker verification system, balancing acquisition duration and verification error rate.     

Developing Instructional Web Sites – A Software Engineering Approach

This paper focuses on the application of software engineering practices to the development of instructional web sites. The development of a web site, to support a distance or campus-based online course, is a very complex process that involves many instructional and technical aspects, including the instructional purpose of the course, its content, its structure, its interface, and its teaching–learning activities. The use of a method is essential for dealing with the complexity of this process. We describe, in this paper, a software engineering method that helps course designers and teachers to develop high quality instructional web sites. The design of the method was based on the integration of well-known principles, concepts and process models borrowed from instructional design, method engineering, and object-oriented software engineering. The method addresses the managerial processes required to plan, organize, and control the project, as well as the instructional and technical activities involved in the development of high quality course sites.     

The roots and routes of environmental and sustainability education policy research

Environmental Education Research has developed a Virtual Special Issue (VSI) (http://explore.tandfonline.com/content/ed/ceer-vsi) focusing on studies of environmental and sustainability education (ESE) policy. The VSI draws on key examples of research on this topic published in the Journal from the past two decades, for three reasons. First, to provide readers with a series of snapshots into the genealogy of ESE policy research in this field. Second, to encourage renewed attention to previously published work. And third, to offer commentary on the evolution of research trends, approaches and findings.     

The impact of student feedback on teaching in higher education

Receiving feedback from students has become a normal part of life for university teachers worldwide. This puts pressure on them from several sides and may be an influential factor that leads them to tailor their teaching to students’ preferences. The aim of this study was to investigate teachers’ perceptions of student feedback and how it affects their teaching choices. A survey was sent out to all teachers at the School of Business, Economics and Law at the University of Gothenburg, Sweden. The study found that student feedback is perceived positively by university teachers, has a large impact on their teaching and helps improve courses. Student feedback pushes teaching in the direction of fewer lectures and more tutorials, seminars and case studies. Teachers receiving negative student feedback experience more negative feelings related to the feedback, and are also more likely to introduce unjustified changes to their teaching in order to please students. These teachers also tend to have less teaching experience. However, a very large majority of teachers have a high level of professional pride and integrity and do not make (as they perceive them) unjustified changes to their teaching.     

STEERING PATTERNS IN THE AUSTRIAN UNIVERSITY SYSTEM

Inspired by Burton Clark's “triangle of coor‐dination” whereby a university is steered according to its relationship to “state authority”, the “academic oligarchy”, and the “market”, the author analyses the debate going on in Austrian higher education circles today about the proper way for the universities of the country to be steered. The general proposal is to supersede the University Organization Act of 1975, which had really been a reformulation of the traditional ministerial bureaucratic centralism typical of Austrian university governance, in favour of market‐oriented and decentralized approaches with many of the functions of the Ministry of Science and Research to be handed over to a buffer organization to be created. The chances are, however, that fundamentally very little of current practice will be changed because of the strength of set patterns and because of the inner contradictions within the principal reform proposals.