Reconsidering conceptual change from a socio-cultural perspective: analyzing students’ meaning making in genetics in collaborative learning activities

In the learning sciences, students’ understanding of scientific concepts has often been approached in terms of conceptual change. These studies are grounded in a cognitive or a socio-cognitive approach to students’ understanding and imply a focus on the individuals’ mental representations of scientific concepts and ideas. We approach students’ conceptual change from a socio-cultural perspective as they make new meaning in genetics. Adhering to a socio-cultural perspective, we emphasize the discursive and interactional aspects of human learning and understanding. This perspective implies that the focus is on students’ meaning making processes in collaborative learning activities. In the study, we conduct an analysis of a group of students’ who interact while working to solve problems in genetics. In our analyses we emphasize four analytical aspects of the students’ meaning making: (a) the students’ use of resources in problematizing, (b) teacher interventions, (c) changes in interactional accomplishments, and (d) the institutional aspect of meaning making. Our findings suggest that students’ meaning making surrounding genetics concepts relates not only to an epistemic concern but also to an interactional and an institutional concern.

Technological internationalisation in the electro-technical industry: a cross-company comparison of patenting patterns 1986-2000

This paper addresses the issue of R&D internationalisation of two multinationals in the electro-technical industry (GE and ABB), by means of a patent data analysis. The overwhelming majority of both companies’ R&D activities are concentrated in Western Europe and North America. The locational overlap between the two firms’ activities is small. These results are consistent with findings from earlier studies that (1) there is little evidence to suggest that the ‘production’ of technology is globalised in a general sense and (2) that tapping knowledge from an industry's global lead location plays a very limited role in foreign R&D investments.     

Strategies for success: uncovering what makes students successful in design and learning

While the purposes of design and science are often different, they share some key practices and processes. Design-based science learning, which combines the processes of engineering design with scientific inquiry, is one attempt to engage students in scientific reasoning via solving practical problems. Although research suggests that engaging students in design-based science learning can be effective for learning both science process and content, more research is needed to understand how to overcome what Vattam and Kolodner (Pragmatics and Cognition 16:406–437, 2008) called “the design–science gap.” This study, therefore, takes a first step at systematically delving into this issue of bridging the design–science gap by examining the problem-solving strategies that students are using when they solve a prototypical design task. Videotaped performance assessments of high and low performing teams were analyzed in depth. Results suggest that students use both science reasoning strategies (e.g., control of variables) and design–focused strategies (e.g., adaptive growth). However, the strategies commonly associated with success in science (e.g., control of variables) did not necessarily lead to success in design. In addition, while both science reasoning strategies and design–focused strategies led to content learning, the content learned was different.     

Postgraduate student satisfaction: A multilevel analysis of PTES data

Student satisfaction has received growing attention in Higher Education systems in recent years, and are increasingly used for internal and external accountability in the sector. This does leave us with questions on the extent to which variance in student satisfaction can be explained by Higher Education Institution (HEI) and course attended rather than by individual student characteristics; and on what factors may predict student satisfaction. In this study we used the Postgraduate Taught Experience Survey (PTES) to look at these questions in a sample of approximate 70000 UK postgraduate students from 100 HEI's. Firstly, confirmatory factor analyses were used to test the validity of the proposed multidimensional structure of student satisfaction in PTES. Then multilevel models were used to look at variance at three levels (HEI, course and student), and the relationships between institutional and student factors collected in PTES and student satisfaction. Two years of data (2014 and 2015) were used. Findings suggest that over 90% of variance is explained at the student level for all dimensions of student satisfaction in both years, with variance at the HEI level being particularly low. Individual student characteristics explain more variance than institutional characteristics, but only some (such as BME status) are significant, and explained variance is low. These findings suggest using student satisfaction as an accountability measure in HE may be highly problematic.     

Intensity and physiological strain of competitive ultra-endurance exercise in humans

The aim of this study was to determine the magnitude and pattern of intensity, and physiological strain, of competitive exercise performed across several days, as in adventure racing. Data were obtained from three teams of four athletes (7 males, 5 females; mean age 36 years, s = 11; cycling .VO(2 peak) 53.9 ml . kg(-1) . min(-1), s = 6.3) in an international race (2003 Southern Traverse; 96 - 116 h). Heart rates (HR) averaged 64% (95% confidence interval: +/- 4%) of heart rate range [%HRR = (HR - HR(min))/(HR(max) - HR(min)) x 100] during the first 12 h of racing, fell to 41% (+/-4%) by 24 h, and remained so thereafter. The level and pattern of heart rate were similar across teams, despite one leading and one trailing all other teams. Core temperature remained between 36.0 and 39.2 degrees C despite widely varying thermal stress. Venous samples, obtained before, during, and after the race, revealed increased neutrophil, monocyte and lymphocyte concentrations (P < 0.01), and increased plasma volume (25 +/- 10%; P < 0.01) with a stable sodium concentration. Standardized exercise tests, performed pre and post race, showed little change in the heart rate-work rate relationship (P = 0.53), but a higher perception of effort post race (P < 0.01). These results provide the first comprehensive report of physiological strain associated with adventure racing.     

Ethnic Identity Development and Acculturation Preferences Among Minority and Majority Youth: Norms and Contact

This article tests a longitudinal model of the antecedents and consequences of changes in identification with indigenous (Mapuche) among indigenous and nonindigenous youth in Chilean school contexts over a 6‐month period (633 nonindigenous and 270 Mapuche students, M_ages = 12.47 and 12.80 years, respectively). Results revealed that in‐group norms supporting contact and quality of intergroup contact at Time 1 predicted student's changes in Mapuche identification at Time 2, which in turn predicted changes in support for adoption of Chilean culture and maintenance of Mapuche culture at Time 2; some of the relationships between these variables were found to be moderated by age and ethnicity. Conceptual and policy implications are addressed in the Discussion .