The Dutch motor skills assessment as tool for talent development in table tennis: a reproducibility and validity study     

Irene R. Faber  Maria W. G. Nijhuis-Van Der Sanden  Marije T. Elferink-Gemser  Frits G. J. Oosterveld 《Journal of sports sciences》2015,33(11):1149-1158

A motor skills assessment could be helpful in talent development by estimating essential perceptuo-motor skills of young players, which are considered requisite to develop excellent technical and tactical qualities. The Netherlands Table Tennis Association uses a motor skills assessment in their talent development programme consisting of eight items measuring perceptuo-motor skills specific to table tennis under varying conditions. This study aimed to investigate this assessment regarding its reproducibility, internal consistency, underlying dimensions and concurrent validity in 113 young table tennis players (6–10 years). Intraclass correlation coefficients of six test items met the criteria of 0.7 with coefficients of variation between 3% and 8%. Cronbach’s alpha valued 0.853 for internal consistency. The principal components analysis distinguished two conceptually meaningful factors: “ball control” and “gross motor function.” Concurrent validity analyses demonstrated moderate associations between the motor skills assessment’s results and national ranking; boys r = ?0.53 (P < 0.001) and girls r = ?0.45 (P = 0.015). In conclusion, this evaluation demonstrated six test items with acceptable reproducibility, good internal consistency and good prospects for validity. Two test items need revision to upgrade reproducibility. Since the motor skills assessment seems to be a reproducible, objective part of a talent development programme, more longitudinal studies are required to investigate its predictive validity.  相似文献   

Why do researchers decide to publish in questionable journals? A review of the literature     

Tove Faber Frandsen 《Learned Publishing》2019,32(1):57-62

Peer review is a cornerstone of scientific publication, and consequently, predatory journals are feared to be a threat to the credibility of science as they perform no or low‐quality peer review. The question of why researchers decide to publish in a questionable journal remains relatively unexplored. This paper provides an overview of the existing literature on why researchers decide to publish papers in questionable journals, specifically whether or not they search for a low‐barrier way to getting published while being aware that the chosen journal probably does not adhere to acceptable academic standards. The choice of a publication outlet can be seen as a submission tree that consists of various incentives, and explaining why authors publish in deceptive journals may thus consist of a combination of awareness and motivational factors. Awareness and motivation of diligent authors is very different from that of unethical authors. Unethical authors may use a lack of awareness to excuse their actions, but they may actively search for a low‐barrier way to getting published. As there are different types of authors who publish in deceptive journals, we need different approaches to solve the problem.  相似文献   

Discrimination of Biomechanically Possible and Impossible Hand Movements at Birth          下载免费PDF全文

Elena Longhi  Irene Senna  Nadia Bolognini  Hermann Bulf  Paolo Tagliabue  Viola Macchi Cassia  Chiara Turati 《Child development》2015,86(2):632-641

The development of human body perception has long been investigated, but little is known about its early origins. This study focused on how a body part highly relevant to the human species, namely the hand, is perceived a few days after birth. Using a preferential‐looking paradigm, 24‐ to 48‐hr‐old newborns watched biomechanically possible and impossible dynamic hand gestures (Experiment 1, N = 15) and static hand postures (Experiment 2, N = 15). In Experiment 1, newborns looked longer at the impossible, compared to the possible, hand movement, whereas in Experiment 2 no visual preference emerged. These findings suggest that early in life the representation of the human body may be shaped by sensory‐motor experience.  相似文献   

Do labels matter? Analysis of teachers' self-efficacy towards the autism spectrum disorder depending on the diagnostic label used (ASD or Asperger's)     

Irene Gómez-Marí  Gemma Pastor-Cerezuela  Irene Lacruz-Pérez  Raúl Tárraga-Mínguez 《Journal of Research in Special Educational Needs》2023,23(2):126-135

Changes in the classification of autism and Asperger's syndrome led to changes in social perception of ASD. Since last criteria, studies indicate higher levels of stigma towards ASD than towards Asperger's. These prejudices are barriers to inclusive education. Thus, it is relevant (1) to evaluate pre-service teachers' self-efficacy towards the label of ASD; (2) to evaluate pre-service teachers' self-efficacy towards the label of Asperger's and (3) to compare those results to analyse whether the use of different diagnostic labels brings about different levels of self-efficacy. One hundred and eighty-six primary education pre-service teachers participated in the current study. Two adaptations of the Autism Self-Efficacy Scale for Teachers (ASSET) were used: a version with the label of ‘ASD’ (n = 96) and another for ‘Asperger's’ (n = 90). The scores obtained by the group asked about ASD were high according to the ASSET score range, while the scores obtained by the group asked about Asperger's were medium. After comparing the results, participants asked about the label ASD showed higher levels of self-efficacy than participants asked about Asperger's. These results could be a consequence of the consolidation of the ASD diagnosis among society and the higher presence of children with ASD in schools and cultural products, among other factors.  相似文献   

Hopf bifurcation and synchronization of a five-dimensional self-exciting homopolar disc dynamo using a new fuzzy disturbance-observer-based terminal sliding mode control     

Zhouchao Wei  Amin Yousefpour  Hadi Jahanshahi  Uǧur Erkin Kocamaz  Irene Moroz 《Journal of The Franklin Institute》2021,358(1):814-833

Having found hidden hyperchaos in a 5D self-exciting homopolar disc dynamo, we study the existence of a Hopf bifurcation, which leads to unstable limit cycles bifurcating from a stable equilibrium. Hidden chaos with only stable equilibria can be observed from the Hopf bifurcation: a typical way to enable hidden attractors to be located. We then provide a new fuzzy controller, and a fast fuzzy disturbance observer, based on terminal sliding mode control for synchronization of the hyperchaotic system. Fuzzy inference is considered to weaken the chattering phenomena. Using Lyapunov stability theory, the stability of the closed-loop system is proved. Finally, simulations of synchronization are illustrated to show the efficient performance of the designed control method via external disturbances and dynamic uncertainties.  相似文献   

Instructional guidelines based on conceptions of students and scientists about economic and population growth within planetary boundaries     

Lampert  Irene  Niebert  Kai  Wilhelm  Markus 《International Journal of Science and Mathematics Education》2022,20(7):1315-1336

International Journal of Science and Mathematics Education - The burden placed by human activities on Earth is ever-increasing. Global environmental changes have profoundly affected the...  相似文献   

The future of digital working: knowledge migration and learning     

Irene Malcolm 《Learning, Media and Technology》2014,39(4):449-467

Against the backdrop of intensified migration linked to globalisation, this article considers the implications of knowledge migration for future digital workers. It draws empirically on a socio-material analysis of the international software localisation industry. Localisers' work requires linguistic, cultural and software engineering skills to adapt digital products to be marketed worldwide. The article addresses the problem of the need for better understanding of knowledge practices in digital working and offers new insights by examining work and learning against the theoretical question of how knowledge migrates. Drawing on the writing of sociologist Karin Knorr Cetina, it illustrates how workers reformulate knowledge and practise visibility through object relations that support learning. The article concludes with five recommendations for incorporating insights gained through this analysis in education.  相似文献   

What makes a landmark effective? Sex differences in a navigation task     

V. D. Chamizo  Clara A. Rodríguez  Irene Torres  Marta N. Torres  N. J. Mackintosh 《Learning & behavior》2014,42(4):348-356

In Experiment 1, two groups of female rats were trained in a triangular pool to find a hidden platform whose location was defined in terms of a single a landmark, a cylinder outside the pool. For one group, the landmark had only a single pattern (i.e., it looked the same when approached from any direction), while for the other, the landmark contained four different patterns (i.e., it looked different when approached from different directions). The first group learned to swim to the platform more rapidly than the second. Experiment 2 confirmed this difference when female rats were trained in a circular pool but found that male rats learned equally rapidly (and as rapidly as females trained with the single-pattern landmark) with both landmarks. This second finding was confirmed in Experiment 3. Finally, in Experiment 4a and 4b, male and female rats were trained either with the same, single-pattern landmark on all trials or with a different landmark each day. Males learned equally rapidly (and as rapidly as females trained with the unchanged landmark) whether the landmark changed or not. We conclude that male and female rats learn rather different things about the landmark that signals the location of the platform.  相似文献   

Newborns' face recognition: role of inner and outer facial features   总被引：1，自引：0，他引：1  

Turati C  Macchi Cassia V  Simion F  Leo I 《Child development》2006,77(2):297-311

Existing data indicate that newborns are able to recognize individual faces, but little is known about what perceptual cues drive this ability. The current study showed that either the inner or outer features of the face can act as sufficient cues for newborns' face recognition (Experiment 1), but the outer part of the face enjoys an advantage over the inner part (Experiment 2). Inversion of the face stimuli disrupted recognition when only the inner portion of the face was shown, but not when the whole face was fully visible or only the outer features were presented (Experiment 3). The results enhance our picture of what information newborns actually process and encode when they discriminate, learn, and recognize faces.  相似文献   

Learning by starch potato growers: learning in small businesses with no employees     

Niels R. Faber  Laura Maruster  René J. Jorna  Rob J.F. van Haren 《Educational Research and Evaluation》2013,19(6):519-539

In small businesses with no employees, learning environments have a low learning readiness. Consequently, learners need to rely on their own agency to shape their learning experiences. Results from a study of agricultural entrepreneurs indicated that the components of motivation and self-regulated learning strategies shape learner's agency and explain learning environment configuration in small businesses with no employees. Configuration of the learning environment was found to be a weak determinant of the learning performance of these learners. However, results showed that prior performance of learners in small businesses with no employees dictates how their agency operates and what learning effect is achieved; higher prior performance results in higher learning effects. We conclude that mechanisms that underlie learning in traditional learning environments work similarly in learning environments in small businesses with no employees.  相似文献