Classroom-based science research at the introductory level: changes in career choices and attitude

Our study, focused on classroom-based research at the introductory level and using the Phage Genomics course as the model, shows evidence that first-year students doing research learn the process of science as well as how scientists practice science. A preliminary but notable outcome of our work, which is based on a small sample, is the change in student interest in considering different career choices such as graduate education and science in general. This is particularly notable, as previous research has described research internships as clarifying or confirming rather than changing undergraduates' decisions to pursue graduate education. We hypothesize that our results differ from previous studies of the impact of engaging in research because the students in our study are still in the early stages of their undergraduate careers. Our work builds upon the classroom-based research movement and should be viewed as encouraging to the Vision and Change in Undergraduate Biology Education movement advocated by the American Association for the Advancement of Science, the National Science Foundation, and other undergraduate education stakeholders.     

Opportunities-to-Learn at Home: Profiles of Students With and Without Reaching Science Proficiency

This study examines the relationship between opportunity-to-learn (OTL) at home and students’ attainment of science proficiency. The data set used was the 2006 PISA science US national sample. Data mining was used to create patterns of association between home OTL variables and student attainment of science proficiency. It was found that students who failed to reach science proficiency are characterized by having fewer than 100 books at home; these students are also found to take out-of-school individual or group lessons with their teachers or with other teachers. On the other hands, students who reached science proficiency are characterized by having more than 100 books at home, not taking any out-of-school lessons, and having a highest parent level of graduate education. In addition to the above common characteristics, other home characteristics (e.g. computer and internet at home and language spoke at home) are also identified in profiles of students who have reached science proficiency. We explain the above findings in terms of current social-cultural theories. We finally discuss implications of the above findings for future studies and for improving science education policy and practice.     

Early Child Contingency Learning and Detection: Research Evidence and Implications for Practice

The types of contingency experiences infants and young children are typically exposed to are examined with a focus on the implications for early childhood intervention with young children who have developmental disabilities and delays. Studies of response-contingent child learning, the manner in which contingencies are not under direct child control, and child/caregiver reciprocal contingencies, are reviewed in terms of how they influence child learning and development. Results indicate that the different types of contingencies all positively influence child behavior. Implications for practice are described in terms of contingency-rich everyday child learning activities, child response-contingent learning in the context of those activities, and caregiver contingent responsiveness as an instructional strategy for supporting child contingency learning.     

Translating Communication Measures for Use in Non-English-Speaking Populations

Research involving comparisons between English-speaking and non-English-speaking populations often includes a process of scale translation. The goals of translation of a psychosocial instrument from its original, source language (e.g., English) to another target language (e.g., Spanish) are to maintain denotative and connotative word meanings, and to ensure the source and target scales correctly measure the attributes of interest. This essay offers advice on some of the important issues related to the translation of instruments used in communication research. Specific concerns about various translation methods are addressed, and suggestions for assessing the semantic equivalence and translation invariance of scales are discussed.     

Merger in Higher Education: learning from Experiences

Political pressure to reduce the number of higher education institutions in Wales has been sustained for over a decade by three successive ministers for education, two of whom, Jane Davidson and the current incumbent, Leighton Andrews, have left the Welsh sector in no doubt about the strength of their personal commitment to the policy of reconfiguration and collaboration. In this paper, an attempt is made to understand and explain how this policy was experienced by some of the people most closely affected by the recent merger between the Royal Welsh College of Music and Drama and the University of Glamorgan in South East Wales. Some of the lessons learned in this particular context are elucidated in the hope that they might be of assistance to both policy‐makers and members of higher education institutions elsewhere that are contemplating merger.     

Increasing label-free stem cell sorting capacity to reach transplantation-scale throughput

Dielectrophoresis (DEP) has proven an invaluable tool for the enrichment of populations of stem and progenitor cells owing to its ability to sort cells in a label-free manner and its biological safety. However, DEP separation devices have suffered from a low throughput preventing researchers from undertaking studies requiring large numbers of cells, such as needed for cell transplantation. We developed a microfluidic device designed for the enrichment of stem and progenitor cell populations that sorts cells at a rate of 150,000 cells/h, corresponding to an improvement in the throughput achieved with our previous device designs by over an order of magnitude. This advancement, coupled with data showing the DEP-sorted cells retain their enrichment and differentiation capacity when expanded in culture for periods of up to 2 weeks, provides sufficient throughput and cell numbers to enable a wider variety of experiments with enriched stem and progenitor cell populations. Furthermore, the sorting devices presented here provide ease of setup and operation, a simple fabrication process, and a low associated cost to use that makes them more amenable for use in common biological research laboratories. To our knowledge, this work represents the first to enrich stem cells and expand them in culture to generate transplantation-scale numbers of differentiation-competent cells using DEP.     

Back to the Future: Warlpiri Encounters with Drawings,Country and Others in the Digital Age

Since the early 1900s, Warlpiri people living in the central desert region of Australia have experienced an intense process of adaption to the changing circumstances of postcolonial life. From the earliest days, their encounters with kardiya, non-Aboriginal people, have been mediated by diverse visual technologies that have, over time, become integral to the ways Warlpiri orient themselves to each other and their wider world. In this paper I trace the key elements of the complex visual environment that has emerged from this history of mediation. The central part of the paper considers events around the repatriation to Warlpiri communities in 2011 of a collection of drawings made in the 1950s by their forebears. In responses to a medium that once was new but now is old, several points of interest emerge, among them a clear sense of a hierarchy of value Warlpiri apply to modes of visual communication. In the context of the return of the drawings, the significance Warlpiri ascribe to other visual media comes to the fore. I consider some of the ways visual forms are deployed in support of public projections of cultural identity on the one hand and everyday modes of expression and address on the other. The paper's central argument is that contemporary Warlpiri attitudes to images – whether they be drawn, painted or broadcast – reveal the complex postcolonial workings of mimetic desire.     

Child maltreatment, subsequent non-suicidal self-injury and the mediating roles of dissociation, alexithymia and self-blame

ObjectiveAlthough child maltreatment is associated with later non-suicidal self-injury (NSSI), the mechanism through which it might lead to NSSI is not well understood. The current retrospective case–control study examined associations between child maltreatment and later NSSI, and investigated the mediating roles of dissociation, alexithymia, and self-blame.MethodsParticipants were 11,423 Australian adults (response rate 38.5%), randomly selected from the Australian Electronic White Pages, aged between 18 and 100 (M = 52.11, SD = 16.89), 62.2% female. Data were collected via telephone interviewing. Main outcome measures were reported history of child maltreatment (sexual abuse, physical abuse, neglect) and reported 12-month NSSI. Dissociation, alexithymia, and self-blame were examined as potential mediating variables in the relationship between child maltreatment and later NSSI. All analyses were conducted using logistic regression and adjusted for age and psychiatric diagnosis.ResultsResults differed by gender. Compared to no child maltreatment, physical abuse (OR 2.75, 95% CI 1.68–4.51) and neglect (OR 2.56, 95% CI 1.65–3.99) independently increased the odds of NSSI among females. Physical abuse (OR 2.69, 95% CI 1.44–5.03) increased the odds of NSSI among males. Sexual abuse did not independently increase the odds of NSSI for males or females. For females, self-blame had the greatest effect on the child maltreatment–NSSI relationship (OR decreased by 14.6%, p < .000), although dissociation and alexithymia also partially mediated the relationship. For males, dissociation had the greatest effect (OR decreased by 12.9%, p = .003) with self-blame also having a relatively strong effect.ConclusionsThe results indicate that child maltreatment, and in particular, physical abuse, is strongly associated with the development of subsequent NSSI and may be partially mediated by dissociation, alexithymia, and self-blame for females and dissociation and self-blame for males. Altering attributional style (through cognitive therapy or emotion focussed therapy) and improving the capacity to regulate emotions (through dialectical behaviour therapy) may contribute to reduction or cessation of NSSI.