Group Assessment in Systems Analysis and Design: a comparison of the performance of streamed and mixed‐ability groups

The results from a controlled experiment in methods of group formation for a group assessment exercise on a second‐year systems analysis and design module are presented. The experiment was undertaken in response to analysis of module results from the previous 3 years. In the group assessments the members of each group received the same group grade. The experiment compared the performance of streamed and mixed‐ability groups. The results are analysed and discussed. It shows that high ability students obtain considerably lower grades in mixed‐ability groups than in streamed groups whereas the reverse is the case for students at the lower end of the ability range. The study also indicates that lower ability students do better in subsequent examinations after having worked in mixed‐ability groups than those in streamed groups whereas the reverse is the case for higher ability students. The implications of the results and directions for future research are discussed.     

Relations between teachers' approaches to teaching and students' approaches to learning

This paper reports on an empirical study which shows that qualitatively different approaches to teaching are associated with qualitatively different approaches to learning. More specifically, the results indicate that in the classes where teachers describe their approach to teaching as having a focus on what they do and on transmitting knowledge, students are more likely to report that they adopt a surface approach to the learning of that subject. Conversely, but less strongly, in the classes where students report adopting significantly deeper approaches to learning, teaching staff report adopting approaches to teaching that are more oriented towards students and to changing the students conceptions. The study made use of a teaching approach inventory derived from interviews with academic staff, and a modified approach to learning questionnaire. These conclusions are derived from a factor and cluster analysis of 48 classes (involving 46 science teachers and 3956 science students) in Australian universities. The results complete a chain of relations from teacher thinking to the outcomes of student learning. Previous studies have shown relations between teachers' conceptions of teaching and learning and their approaches to teaching. Numerous studies have shown correlations between students' deeper approaches to learning and higher quality learning outcomes. The results reported here link these two sets of studies. They also highlight the importance, in attempts to improve the quality of student learning, of discouraging teacher-focused transmission teaching and encouraging higher quality, conceptual change/student-focused approaches to teaching.     

FORECASTING CREDIT HOURS

This paper employs Tobit to estimate retentionprobabilities and credit hours at two universities. Theinnovation is that this technique examines credit-hourchoice with the decision to depart the university treated as the choice of zero credit hours.Tobit is appropriate for this problem because itrecognizes the lower bound of zero on credit hours andincorporates this bound into the parameter estimates and forecasts. Models are estimated for credithours in a single year and cumulative hours over asix-year horizon.     

Academics' Motivation and Self‐efficacy for Teaching and Research

The study focused on academic staff in a post‐1987 university, that is, a former college of advanced education which had been awarded university status as a result of the Australian Government's decision to have a Unified National System of universities. The focus of attention was motivation and self‐efficacy for teaching and research. The effect of faculty of affiliation, level of appointment, gender, qualifications, and research productivity on staff's self‐reported attributions for teaching and research were examined. Tutors, staff with bachelor degrees, academics with low research productivity, and women had higher teaching motivation. One faculty was lower in both research motivation and self‐efficacy, and associate professors and professors had high levels of research efficacy. Men and women had the same level of research motivation and self‐efficacy. Staff with higher degrees and greater research productivity were more motivated and self‐efficacious about research. The results suggest the need to understand more clearly how each individual's research motivation and self‐efficacy is constructed and to determine the best method of increasing motivation and self‐efficacy for teaching and research.     

Professional Ethics in the College and University Science Curriculum

Scientific ethics is a subset of professional ethics, the special rules of conduct adopted by those engaged in one of the pursuits regarded as professions, such as law, medicine, engineering and science. Professional ethics derive from a moral ideal based on service. This ideal leads to a pair of bargains: an internal bargain that defines the internal code of practice within the profession, and an external bargain that defines the relationship between the profession and society. This article develops the internal and external bargains that are the basis of scientific ethics from both an historical and a philosophical perspective and makes suggestions as to how the teaching of scientific ethics can be integrated into the undergraduate curriculum.     

Editorial

Science &; Education -     

Prenatal Risk Predicts Preschooler Executive Function: A Cascade Model

Little research has considered whether prenatal experience contributes to executive function (EF) development above and beyond postnatal experience. This study tests direct, mediated, and moderated associations between prenatal risk factors and preschool EF and IQ in a longitudinal sample of 1,292 children from the Family Life Project. A composite of prenatal risk factors (i.e., low birth weight, prematurity, maternal emotional problems, maternal prepregnancy obesity, and obstetric complications) significantly predicted EF and IQ at age 3, above quality of the postnatal environment. This relationship was indirect, mediated through infant general cognitive abilities. Quality of the postnatal home and child-care environments did not moderate the cascade model. These findings highlight the role of prenatal experience as a contributor to individual differences in cognitive development.