Enhancement of pigeons’ conditional discrimination performance by expectancies of reinforcement and nonreinforcement

Prior work has shown that when the separate correct responses of a conditional discrimination are followed by different reinforcing outcomes, performance is enhanced relative to that obtained under the conventional, single-reinforcer procedure. Four experiments with pigeons yielded the analogous finding when the different outcomes were reinforcement and explicit nonreinforcement. Controls indicated that the results could not be attributed to the effects of intermittent reinforcement, to possible differences in cue duration, or to a variety of potential sources of conditioned reinforcement. An interpretation in terms of expectancy learning is proposed.     

Action research: a methodology for transformative learning for a professor and his students in an engineering classroom

ABSTRACT

An engineering professor of a first-year thermodynamics course and a PhD student with a focus in engineering education in a large research university in Canada participated in an ethnographic action research study with the intention of increasing active learning in the classroom to enhance student engagement and learning. Unexpected findings included transformative changes to the professor’s epistemology of teaching and learning. Through the action research cycle of planning, implementing, observing, and critically reflecting, modifications were made to the instructional strategies and the learning environment that created a micro engineering community of practice where both students and teaching assistants engaged in deep learning and legitimate peripheral participation on the trajectory to ‘becoming engineers’. Qualitative interview data from the professor, three students, and three teaching assistants are analysed through approaches to learning research and situated learning theory. Engaging in action research had profound repercussions in this case. The authors make the argument for action research as a catalyst for transformative learning required for teachers to engage students in the twenty-first century classroom.     

University research in flux: Policy debate in Australia

After a brief golden age Australian university research faces a difficult future. Two notions, utility and concentration, have become the catchwords of the emerging policy initiatives. Both have tended to be interpreted narrowly and simplistically, utility as having immediate technological applications that will bring economic benefits, and concentration to argue for breaking the teaching-research nexus, reducing the research workforce and thus achieving cost savings. As proposed, both initiatives require more centralised control of research policy and funding. Despite the outstanding record of Australia's universities in research and the absence of evidence to support the benefits claimed for the new initiatives, the pressure for change is gaining momentum. The problems facing Australian universities have much in common with those in other Western countries, although unique solutions must be sought for every setting. This paper argues that, in Australia, the adoption of the easy solution of increased concentration, short-term utility, and centralised control, is likely to compromise the established excellence and diversity in basic research, and to lead to an overall reduction in the scale of university research. Before any changes are instigated, there is a pressing need for a broad-ranging review based on widespread participation in a debate about needs and priorities, and rigorous research into the performance of the existing system and the potential benefits of the changes proposed.     

University class size: Is smaller better?

This study investigates the relationship between class size and achievement at the college level. Recent meta-analyses have found a strong relationship between class size and student achievement, but few of the studies examined class size larger than 40 or university-age populations. This analysis examines a university's testing-center data-archives representing 305 sections from 24 different courses. Section sizes ranged from 13 to 1,006. A total of 16,230 test scores were analyzed. The results of this investigation reveal that at the college level, class size may be less important an influence on student achievement than some educators have thought.     

Education and poverty reduction in Tanzania

This paper reviews research on the returns to education in Tanzania, both financial and non-financial, and considers whether these returns translate into poverty reduction. It looks at reasons why achievement of high primary enrolment rates in the past did not lead to the realisation of the associated developmental outcomes, considering factors both within and beyond the education system. Achieving mass access at the expense of quality appears to have had a negative impact on equality. The poverty reduction potential of current programmes to develop the primary and secondary education systems are discussed in the light of past experience.     

THE POWER OF PERFORMANCE IN DEVELOPING PROBLEM SOLVING AND SELF ASSESSMENT ABILITIES

Students of Alverno College develop problem solving as one of eight abilities they are required to demonstrate in order to graduate. They must also demonstrate self assessment ability as an important part and over‐riding outcome of their educational process.

In ongoing studies, the research staff of the college found that students show increasing sophistication in their performance of these abilities and identify them as significant aspects of their education. Faculty contribute to their own developing educational theory and practice by analysing student performance and judging it by criteria they have articulated to describe expert performance. In requiring students to integrate self assessment into their problem solving process, faculty have found that students show increasing understanding of inter‐relationships of ability, content, and context. Students take responsibility for their learning as a dynamic, continuing process. They gradually internalise their practice of both problem solving and self assessment ability.     

TAKING SCHOOL CONTEXTS MORE SERIOUSLY: THE SOCIAL JUSTICE CHALLENGE

ABSTRACT:  Research is increasingly highlighting the influence of school contexts on school processes and student achievement. This article reviews a range of social justice rationales for taking school contexts into better account, and highlights the challenges contextualisation currently poses for practice and for policy. It notes important constraints on contextualised practice and limited developments in contextualising policy. There is now increasing concern to recognise and understand context in school effectiveness and school improvement research but such research needs to consider school context much more, in order to provide a stronger underpinning for contextualised policy and practice. School composition research is potentially most insightful because it addresses the issue most directly. Nevertheless future large-scale studies in this area need to overcome a number of limitations within the existing literature.     

So far so good? A qualitative case study exploring the implementation of consultation in schools

This paper describes a small‐scale research project carried out one year after the implementation of a consultation model of service delivery within an Educational Psychology Service. Following a series of interviews held with special needs co‐ordinators, a hierarchy of development was identified, and conditions pertaining to this development isolated. Through identifying optimum conditions for the development of consultation, a number of specific recommendations are made, aimed at ensuring that all schools gain maximum benefit from this way of working.     

Toronto multiagency child abuse research project: The abused and the abuser

Information from 422 cases of child mistreatment in Toronto was gathered from the files of a child welfare agency and a children's hospital. These data were compared to patterns reported in previous studies and clinical writings on child mistreatment to investigate similarities and differences in families whose children have been abused in Canada, England, and the United States. Findings from the present study were similar to others in many respects. The differences were primarily in the area of lower incidences of such problems as perinatal difficulties in the children and intellectual limitations and social isolation in the parents; however, there was a higher incidence of single-parent families. The results suggest that clinicians should bear in mind that child mistreatment cannot be ruled out on the grounds that no serious problems have been noted for the child or the family.     

Discrimination and generalization of leaf damage by blue jays (Cyanocitta cristata)

Blue jays (Cyanocitta cristata) responded to projected black-and-white silhouettes of cherry leaves that were either undamaged or were damaged by either cryptic caterpillars that disguise leaf damage due to their feeding or by noncryptic caterpillars that do not disguise leaf damage due to their feeding. Pecks to the key on which the images were projected were reinforced only if interresponse times fell within specified temporal boundaries. These boundaries were different in the presence of the two types of leaf damage. Following training with one exemplar of each damage type, the jays correctly categorized novel instances of both types. They categorized novel undamaged leaves as if they were examples of leaves showing damage by cryptic caterpillars. Results suggest that the jays can readily discriminate and generalize to new members of a polymorphous stimulus class. The results suggest that techniques for the study of concept formation in animals can be applied to an animal’s ability to categorize stimuli that are involved in a potential prey-predator relationship.