Effect of odor preexposure on acquisition of an odor discrimination in dogs

In two experiments, we investigated the impact of odor preexposure treatments on the acquisition of an olfactory discrimination in dogs. In the first experiment, four groups of dogs were each given five days’ odor-exposure treatment prior to discrimination training. Dogs in the exposure group were exposed to anise extract (S+) for 30 min daily. Dogs in the Pavlovian-relevant pairing group received six daily delayed-conditioning trials to the same S+. The Pavlovian-irrelevant pairing group received conditioning trials to almond extract (S'). Dogs in the control group received no pretreatment. All of the dogs were then trained to detect S+ from a background pine odor (an AX-vs.-X discrimination). The Pavlovian-relevant pairing group acquired the odor discrimination significantly faster than all of the other exposure and control groups, and the remaining groups acquired the discrimination at the same rate as the no-exposure control group. In a second experiment, we extended these results to a within-subjects design using an AX-versus-BX discrimination. Six dogs were simultaneously trained on two different odor discriminations, one discrimination in which the S+ was previously Pavlovian conditioned, and one discrimination in which the S+ was novel. All of the dogs learned the odor discrimination with the previously conditioned S+ faster than they learned the novel odor discrimination, replicating the results of Experiment 1, and demonstrating that familiarity in the form of Pavlovian conditioning enhances odor-discrimination training. The potential mechanisms of the facilitated transfer of a Pavlovian conditioned stimulus to discrimination training are discussed.     

PEDAGOGICAL DRIFT: THE EVOLUTION OF NEW APPROACHES AND PARADIGMS IN RELIGIOUS EDUCATION

This article considers issues raised by attempting to place spirituality in the context of religious education. While, this might appear to be the least problematic for marriages, or most obvious pairing of dancing partners, when considering how it can be addressed in other curriculum subjects, on closer inspection, perhaps it gives rise to some of the most disturbing issues formal education has to face. These issues range across interconnected themes related to philosophical inquiry, national context and tradition, social values, and the rights of citizens in democratic communities. The argument presented is that whether, when we interrogate these issues in the context of different social histories, with special reference to England and Wales, we find that the concept of spirituality questions current constructs of education and religious education.     

The historiography of British imperial education policy,Part I: India

Colonial education has been controversial and widely divergent interpretations have been offered from contrasting ideological perspectives. British imperial education policy was highly contended during the colonial era and remains a contentious issue amongst many contemporary historians and a critical review of the historiography of the subject is long overdue. British colonial education policy starts in India in 1813, the intention being to promote both Oriental culture and Western science. But a former Director of Public Instruction, writing in the 1920s, claimed that education had done far less for Indian culture than for the material and political progress of India. More recent academic writing about the history of education in British India has been both intermittent and of mixed quality. To date, much of the criticism of British policy appears to have been motivated more by emotion rather than by detailed scholarly analysis and this account argues that more ‘plodding’ in archives is urgently needed at the present time to substantiate, refine or refute the claims of India’s educational historians. This is the first part of a two‐part article, the second of which will deal with Africa and the rest of the colonial Empire.     

COMPARATIVE STUDY OF REVERSE TRANSFER,LATERAL TRANSFER,AND FIRST‐TIME COMMUNITY COLLEGE STUDENTS

Among the “new” students attending community colleges are a large number of reserve and lateral transfers, students with previous college experience. This study was conducted to provide information on their characteristics and their reasons for attending and leaving colleges as compared to the first‐time college study. A sample of 10,196 students in the Los Rios Community College District (California) was studied and five student groups were identified: First Time Students (FTS), 54.7 percent; Noncompleter Lateral Transfers (NCLT), 19.2 percent; Completer Lateral Transfers (CLT), 7.5 percent; Noncompleter Reverse Transfers (NCRT), 12 percent; Completer Reverse Transfers (CRT), 7.6 percent. The CRT and FTS groups differed most significantly. The CRT were older, more often married with children, worked more hours, and were taking fewer units. In general, the characteristics of the other three groups were similar and at a mid‐point between the CRT and FTS. Factor analysis of the reasons for attending showed that factors related to job training, location, low cost, lack of admissions requirements, and the colleges' reputation were important for study groups. Preparation for transfer was not among the most important factors for any group. Students who left four‐year colleges listed reasons related to academic indecision, cost, and items critical of the previous institutions significantly more often than students who had left two‐year colleges. They reported reasons related to mobility and short‐range goals significantly more often. Results appeared to support previous studies with regard to students' characteristics. Further research on students' reasons for attending and leaving, as well as a reexamination of colleges' program formats, services and delivery systems were recommended.     

Romanian psychiatric literature: analysis of accessibility and nature of Romanian psychiatric articles

Background: Romania is a low‐income country of 22 million people and, currently, information regarding mental health research is limited. Romania is one of the last countries in eastern Europe not to have its own bibliographic biomedical database. Aim: To assess the content and quality of Romanian psychiatric research activity over time. Method: embase (1980 to April 2008), medline (1950 to April 2008) and Psyc INFO (1806 to April 2008) were systematically searched for psychiatric articles originating from Romania. The sample from Psyc INFO was described. Results: Psyc INFO was by far the best source of Romanian mental health literature with a considerable increase in the publication activity since 2000 (Psyc INFO identified 3236 hits, medline 549, embase 139). Most papers are in English, but a sizeable minority are in Romanian (30%), French (4%) or Hungarian (4%). The main topics of interest are cognitive processes, creativity, schizophrenia and cognitive development and stress and are, according to Psyc INFO’s indexing, ‘empirical studies’. Seventeen randomised trials were identified with all studies after 2000 being sponsored by industry. Conclusions: Surprisingly, and not in keeping with other studies of the literature of neighbouring countries, Psyc INFO is the major source of psychiatric bibliographic records of this region. There are signs of a resurgence of research activity in Romania and as the number of local mental health workers increases we can expect more output. Industry is now funding evaluative studies in Romania. As everywhere, but perhaps more acutely in situations of severely limited research support, there is a difficult balance to be struck between benefiting support and losing independence.     

A simple and inexpensive enteric-coated capsule for delivery of acid-labile macromolecules to the small intestine

Understanding the ecology of the gastrointestinal tract and the impact of the contents on the host mucosa is emerging as an important area for defining both wellness and susceptibility to disease. Targeted delivery of drugs to treat specific small intestinal disorders such as small bowel bacterial overgrowth and targeting molecules to interrogate or to deliver vaccines to the remote regions of the small intestine has proven difficult. There is an unmet need for methodologies to release probes/drugs to remote regions of the gastrointestinal tract in furthering our understanding of gut health and pathogenesis. In order to address this concern, we need to know how the regional delivery of a surrogate labeled test compound is handled and in turn, if delivered locally as a liquid or powder, the dynamics of its subsequent handling and metabolism. In the studies we report on in this paper, we chose ¹³C sodium acetate (¹³C-acetate), which is a stable isotope probe that once absorbed in the small intestine can be readily measured non-invasively by collection and analysis of ¹³CO₂ in the breath. This would provide information of gastric emptying rates and an indication of the site of release and absorptive capacity. In a series of in vitro and in vivo pig experiments, we assessed the enteric-protective properties of a commercially available polymer EUDRAGIT®L100-55 on gelatin capsules and also on DRcaps®. Test results demonstrated that DRcaps®coated with EUDRAGIT®L100-55 possessed enhanced enteric-protective properties, particularly in vivo. These studies add to the body of knowledge regarding gastric emptying in pigs and also begin the process of gathering specifications for the design of a simple and cost-effective enteric-coated capsule for delivery of acid-labile macromolecules to the small intestine.