Science Background and Spatial Abilities in Men and Women

Deficits in spatial abilities, particularly mental rotation (MR), may contribute to women's avoidance of areas of study that rely on MR, including chemistry. Women who do experience success in chemistry may do so because they have good MR skills. We examined MR ability, assessed by the Purdue Visual Rotations Test (PVRT; Bodner and R. B. (1997)) in three groups of students: those with no college science background, those with a limited college science background that did not include organic chemistry, and those with more extensive science background including organic chemistry. Men and women with extensive background that included organic chemistry performed equally on the MR task, as did those students who had no college science background. However, men outperformed women on the MR task if they had limited science training, although this effect was mediated by the total number of chemistry courses taken. Self-reports of competence on the task were positively related to MR ability, but neither self-described effort nor other background variables (such as experience with spatial tasks and participation in athletics) were important to MR. Grades in science courses were not related to MR capability for any group of students. Our results suggest that while women often show a lesser ability with MR tasks, this deficit may not be an important contribution to women's tendency to avoid the physical sciences.     

Experience of disadvantage: The influence of identity on engagement in working class students’ educational trajectories to an elite university

Pervasive socio‐economic differences in relation to participation in higher education in the United Kingdom are particularly prominent in the most prestigious institutions. This study provides insight into why some individuals from disadvantaged backgrounds are successful in being admitted into one of these institutions. Underpinned by phenomenology, semi‐structured interviews were carried out to examine the lived experiences of high‐achieving students from socio‐economically disadvantaged backgrounds throughout their educational trajectories from primary school to a Russell Group university. Two main themes emerged from the data: identity and educational engagement. Various sources of disadvantage associated with material hardship, socio‐cultural and interpersonal factors were strongly linked to identity and students’ perceptions of their own social status. In turn, these factors and identity‐related constructs associated with peer‐group memberships, low expectations and negative group stereotypes affected how individuals engaged with education, contributing, for instance, to their lack of active involvement at school/college and poor attendance. However, identity‐related factors were also found to influence individuals’ educational engagement positively, including their motivations for overcoming obstacles, achieving high grades and pursuing HE. The barriers and facilitators discussed by these individuals have important implications for widening access to HE and thus require further consideration.     

Organizing for Teacher Agency in Curricular Co-Design

Cultural-historical activity theory (CHAT) approaches to intervention aim for transformative agency, that is, collective actions that expand and bring about new possibilities for activity. In this article, we draw on CHAT as a resource for organizing design research that promotes teachers’ agency in designing new science curriculum materials. We describe how CHAT informed our efforts to structure a collaborative design space in which teachers and other participants sought to develop new curriculum materials intended to help realize a new vision for science education. Specifically, we describe the tools and routines we deployed to support the design process, and we analyze the ways in which teachers took up elements of our design process as well as how they adapted, resisted, and suggested alternative tools and strategies to help develop new curriculum materials. In so doing, we illustrate ways in which CHAT can serve as a guide both for organizing collaborative design processes and for analyzing their efficacy.     

Nausea is associated with endotoxemia during a 161-km ultramarathon

This study explored possible contributing factors to gastrointestinal distress, including endotoxemia, hyperthermia, dehydration and nutrition, during a 161-km ultramarathon. Thirty runners participated in the study and 20 finished the race. At three checkpoints and the finish, runners were interviewed to assess the incidence and severity of 12 gastrointestinal symptoms and to determine dietary intake. Core temperature was measured at the same locations. Runners were weighed pre-race, at the three checkpoints and the finish to monitor hydration status. Blood markers for endotoxemia (sCD14) and inflammation (interleukin-6 and C-reactive protein) were measured pre- and post-race. Gastrointestinal symptoms were experienced by most runners (80%), with nausea being the most common complaint (60%). Runners with nausea experienced significantly greater (P = 0.02) endotoxemia than those without nausea (sCD14 mean increase 0.7 versus 0.5 µg · mL^?1). There was a significant positive correlation (r = 0.652, P = 0.005) between nausea severity and endotoxemia level. Inflammatory response, core temperature, hydration level and race diet were similar between runners with and without nausea. This study links endotoxemia to nausea in ultramarathon runners. Other possible contributing factors to nausea such as hyperthermia, dehydration and nutrition did not appear to play a role in the symptomatic runners in this study.     

Teachable moments: Taking advantage of multicultural encounters

This paper presents the rationale of the Hartford Half Tuition Program at the University of Hartford which enrolls qualified graduates of city high schools. Since its inception four years ago, it has changed the demographics of the institution and been the catalyst for many events, discussions, and interactions that have served as teachable moments for the development of students, staff, and faculty. A critique of key elements of the program leads to the identification of lessons learned.Elizabeth A. McDaniel, Associate Vice President for Academic Affairs at the University of Hartford, received a B.A. in psychology from the University of Florida, M.S. in Education from Barry University, and a Ph.D. in Education from the University of Miami. She is actively involved in issues relating to curriculum, instruction, and community in higher education. Tamara Moreland, Director of the Office of Graduate and Adult Academic Services at the University of Hartford, earned her B.S. in Economics, and is expected to receive her master's in organizational behavior from the University of Hartford in December 1994. Her interests are organizational design, group dynamics, and the influence of culture on interpersonal relationships.     

Task Experience as a Boundary Condition for the Negative Effects of Irrelevant Information on Learning

Research on multimedia learning has shown that learning is hampered when a multimedia message includes extraneous information that is not relevant for the task, because processing the extraneous information uses up scarce attention and working memory resources. However, eye-tracking research suggests that task experience might be a boundary condition for this negative effect of extraneous information on learning, because people seem to learn to ignore task-irrelevant information over time. We therefore hypothesised that extraneous information might no longer hamper learning when it is present over a series of tasks, giving learners the chance to adapt their study strategy. This hypothesis was tested in three experiments. In experiments 1a/1b, participants learned the definitions of new words (from an artificial language) that denoted actions, with matching pictures (same action), mismatching pictures (another action), or without pictures. Mismatching pictures hampered learning compared with matching pictures. Experiment 2 showed that task experience may indeed be a boundary condition to this negative effect on learning: the initial negative effect was no longer present when learners gained experience with the task. This suggests that learners adapted their study strategy, ignoring the mismatching pictures. That hypothesis was tested in experiment 3, using eye tracking. Results showed that attention to the pictures waned with task experience, and that this decrease was stronger for mismatching than for matching pictures. Our findings demonstrate the importance of investigating multimedia effects over time and in relation to study strategies.     

Bioconservatism,bioenhancement and backfiring

ABSTRACT

The prospect of enhancing ourselves through the use of new biotechnologies is for the most part, hypothetical. Nevertheless, the question of whether we should undertake such enhancement is worthy of discussion as it may become possible in the future. In this article, we consider one form of argument that conservative opponents of biotechnological means of enhancement (bioconservatives) deploy in opposition to the use of enhancement technologies—the backfiring objection. This is the objection that the use of such technologies is liable to go wrong and lead to outcomes that are inferior to the outcomes intended. We will argue that the objection is not nearly as significant as bioconservatives suppose it to be. Bioconservatives sometimes supplement the backfiring objection by arguing that change will be irreversible, that the new (or the unconventional) is especially liable to backfire and that humans possess severe and permanent limitations which cannot be overcome. We consider these ways of supplementing the backfiring objection and argue that each of them, when properly understood, is of limited value to the bioconservative. We also consider how traditional approaches to moral education can be supplemented by bioenhancement.     

Effects of problem solving after worked example study on secondary school children’s monitoring accuracy

Monitoring accuracy, measured by judgements of learning (JOLs), has generally been found to be low to moderate, with students often displaying overconfidence, and JOLs of problem solving are no exception. Recently, primary school children’s overconfidence was shown to diminish when they practised problem solving after studying worked examples. The current study aimed to extend this research by investigating whether practising problem solving after worked example study would also improve JOL accuracy in secondary education. Adolescents of 14–15 years old (N = 143) were randomly assigned to one of five conditions that differed in timing of JOLs, whether practice problems were provided, and timing of the practice problems provided: (1) worked examples – JOL, (2) worked examples – delay – JOL, (3) worked examples – practice problems – JOL, (4) worked examples – practice problems – delay – JOL or (5) worked examples – delay – practice problems – JOLs. Results showed that practice problems improved absolute accuracy of JOLs as well as regulation accuracy. No differences in final test performance were found.     

Selecting Socio-scientific Issues for Teaching

Science & Education - Currently there is little guidance given to teachers in selecting focal issues for socio-scientific issues (SSI)-based teaching and learning. As a majority of teachers...