Rethinking teachers’ goal orientations: Conceptual and methodological enhancements

The article provides a theoretical extension of the goal orientation approach for teaching by proposing three different competence facets of learning goals and four types of addressees for performance approach and avoidance goals. On the basis of responses from 495 teacher trainees and 224 in-service teachers, the development and validation of an advanced goal orientation measure is presented. Internal consistencies of the goal dimensions were good, and confirmatory factor analyses verified the postulated model for teacher trainees and in-service teachers. In both groups, learning goal orientation positively predicted self-efficacy for teaching and perceived benefits of help-seeking. Performance approach goals positively predicted self-efficacy for teaching and performance avoidance goals negatively predicted self-efficacy for teaching and positively predicted perceived threats of help-seeking. The use of goal orientation facets provided a more thorough analysis of the predictions regarding perceptions of help-seeking. Results supported the convergent and divergent validity of the new measure.     

An integrated microfluidic chip for immunocapture,preconcentration and separation of β-amyloid peptides

We present an integrated microfluidic chip for detection of β-amyloid (Aβ) peptides. Aβ peptides are major biomarkers for the diagnosis of Alzheimer''s disease (AD) in its early stages. This microfluidic device consists of three main parts: (1) An immunocapture microcolumn based on self-assembled magnetic beads coated with antibodies specific to Aβ peptides, (2) a nano-porous membrane made of photopolymerized hydrogel for preconcentration, and (3) a microchip electrophoresis (MCE) channel with fluorescent detection. Sub-milliliter sample volume is either mixed off-chip with antibody coated magnetic beads and injected into the device or is injected into an already self-assembled column of magnetic beads in the microchannel. The captured peptides on the beads are then electrokinetically eluted and re-concentrated onto the nano-membrane in a few nano-liters. By integrating the nano-membrane, total assay time was reduced and also off-chip re-concentration or buffer exchange steps were not needed. Finally, the concentrated peptides in the chip are separated by electrophoresis in a polymer-based matrix. The device was applied to the capture and MCE analysis of differently truncated peptides Aβ (1–37, 1–39, 1–40, and 1–42) and was able to detect as low as 25 ng of synthetic Aβ peptides spiked in undiluted cerebrospinal fluid (CSF). The device was also tested with CSF samples from healthy donors. CSF samples were fluorescently labelled and pre-mixed with the magnetic beads and injected into the device. The results indicated that Aβ1-40, an important biomarker for distinguishing patients with frontotemporal lobe dementia from controls and AD patients, was detectable. Although the sensitivity of this device is not yet enough to detect all Aβ subtypes in CSF, this is the first report on an integrated or semi-integrated device for capturing and analyzing of differently truncated Aβ peptides. The method is less demanding and faster than the conventional Western blotting method currently used for research.     

Reasoning and working memory as predictors of school grades

The present paper contributes to individual difference research in the field of working memory (WM) and reasoning and their contribution to the prediction of real-life criteria. Therefore, a broad WM test battery, a well-established measure of reasoning, and school grades were applied. It is argued that abilities as assessed with the WM component coordination are relevant for good performances at school, especially for science courses. The verbal task of the WM component storage in the context of processing was assumed to be relevant for the prediction of performance in language courses. As expected, reasoning turned out to be the best predictor of school grades. However, it was also confirmed that variance shared by coordination and reasoning can explain school performance, especially as concerns science courses. The verbal storage in the context of processing task significantly accounted for variance in language courses above and beyond reasoning. Thus, the present study provided further insights into the differential validity of different WM components.     

Der Einfluss von aufmerksamkeitslenkenden Instruktionen auf das Erlernen einer Schlagbewegung im Golf

Among other things instructions serve the purpose of directing the recipient’s attentional focus. Several studies have demonstrated the advantage of an attentional focus away from one’s body (external) and towards the effect of the movement over an attentional focus on the movement itself (internal). In contrast, other studies have shown that the advantage of an external focus cannot be generalized. The present study utilized a golf putting task to investigate the effectiveness of an internal versus an external focus. Furthermore, the present study investigated whether participants complied with the instructions with the respective focus during the learning phase. Moreover, in addition to the performance on the putting task the movement execution was also examined. The results showed that the internal as well as the external group switched between the internal and external focus and additionally modified a neutral focus. There was no correlation between hitting performance and movement variability, but a correlation between the neutral focus and the movement variability was found. The results challenge empirical analysis and the results of research about attentional focus.     

Physical Exercise During the Morning School‐Break Improves Basic Cognitive Functions

Physical activity has not only been associated with increased physical and mental health, but also with beneficial effects on various cognitive and brain functions. This study investigated the effects of a motor and coordination oriented exercise intervention on academic achievements, attention/concentration ability, and on different facets of creative potential in a sample of school‐aged children between 11 and 14 years. The intervention was conducted during the morning school‐break over a time period of 4 weeks (5 units per week). The intervention was associated with beneficial effects on attention/concentration ability, basic arithmetic competence, and the fluency facet of creative potential. The finding that regular physical exercise during the morning break improves some basic academic and cognitive functions may motivate efforts to implement physical activity programs as promising and effective tools in the everyday school‐routine of the children to stimulate basic neurocognitive functions.     

The Cost of Critique: In(ter)vention and Ethical Violence in Kristeva and Benjamin

In this essay we argue that there is an important but frequently overlooked link between Walter Benjamin’s and Julia Kristeva’s attempts to explore new modes of critical practice. What connects Benjamin and Kristeva, in our account, is a vital concern with the cost of critique, that is, with the question whether critical agency in its most productive modes is inherently related to certain forms of ethical violence. We aim to show that, once we read them together, these authors’ pivotal contribution consists of offering an alternative model of critique animated by an ethos of in(ter)-vention, which is keyed to techniques of criticism that are both disruptive and innovative. Ethical violence here refers to a strategic displacement of moral self-perception, which undercuts people’s aspirations toward maintaining a morally robust character in the face of political adversity and social injustice. To illustrate the stakes of such displacement, we turn to the figure of the ‘anti-journalist’ Karl Kraus whose in(ter)ventions display integrity in action rather than integrity of character. Specifically, under the rubric of ethical violence, we propose a dynamic interpretation of Kraus’ performance in terms of polemical witnessing, which combines the corrosive aspects of Benjamin’s ‘destructive character’ with the constructive aspects contained in Kristeva’s notions of ‘sharing singularity’ and ‘intimate revolt’.     

Evaluation of tactical training in team handball by means of artificial neural networks

While tactical performance in competition has been analysed extensively, the assessment of training processes of tactical behaviour has rather been neglected in the literature. Therefore, the purpose of this study is to provide a methodology to assess the acquisition and implementation of offensive tactical behaviour in team handball. The use of game analysis software combined with an artificial neural network (ANN) software enabled identifying tactical target patterns from high level junior players based on their positions during offensive actions. These patterns were then trained by an amateur junior handball team (n = 14, 17 (0.5) years)). Following 6 weeks of tactical training an exhibition game was performed where the players were advised to use the target patterns as often as possible. Subsequently, the position data of the game was analysed with an ANN. The test revealed that 58% of the played patterns could be related to the trained target patterns. The similarity between executed patterns and target patterns was assessed by calculating the mean distance between key positions of the players in the game and the target pattern which was 0.49 (0.20) m. In summary, the presented method appears to be a valid instrument to assess tactical training.     

Differences in 3D kinematics between volleyball and beach volleyball spike movements

The purpose of this study was to identify differences between volleyball and beach volleyball spike jump movements performed on an indoor surface and sand surface respectively. Eight elite male volleyball players performed spike jump movements on both surfaces. An eight-camera motion capturing system (250Hz) was used to generate 3D kinematic data. Seven groups of variables representing the kinematics of the centre of mass, the countermovement, the approach phase, and the angular amplitudes and maximal velocities of the lower and upper limbs were examined using Hotelling's T2(2). Significant differences were observed in the movement of the centre of mass (P < 0.05), the countermovement, the kinematics of the approach phase, and the angular amplitudes of the lower limbs. However, no significant differences were observed either in the maximal angular velocities of the lower and upper limbs, or in the amplitudes of the upper limb motion. In conclusion, the participants showed significant adaptation to changed movement conditions. As a result of the compliance of the sand surface, the participants slowed down their movements, especially during the phase of transition from knee flexion to extension and during the extension phase. Furthermore, the participants demonstrated changes in foot position to reach the greatest height possible.     

Editorial introduction

The city-state of Hong Kong had a unique postcolonial birth in 1997, when it was handed over to the motherland, China, after the expiration of a hundred year lease on Hong Kong held by the British. In this paper, I suggest that Hong Kong's unique attainment of postcoloniality, and the evolution of her subsequent complicated relationship with Mainland China, leads to a deep sense of anxiety in Hong Kong's identity as a global city. This anxiety, I further argue, is mapped on to the physical landscape of Hong Kong. By analysing the portrayal of Tin Shui Wai, a marginal and isolated area of development in Hong Kong, and the contrasting depiction of public and private spaces in Ann Hui's 2009 film Night and Fog, I attempt to explore the Freudian “uncanny,” the return of the repressed, which constantly threatens to erupt. In the concluding section of the paper, I use Kristevian theories of abjection and the spatialization of identity to argue that the figure of Ling, the Mainland mother in Hui's film, brings to the fore Hong Kong's anxiety about its postcolonial identity and relationship with China. She epitomizes the othered self, the return of the repressed, the foreigner who must necessarily be expelled (through murder) from within the nation-space of Hong Kong.