From conceptual development to science education: a psychological point of view     

Stella Vosniadou  Christos Ioannides 《International Journal of Science Education》2013,35(10):1213-1230

A theoretical framework based on cognitive/developmental research is described. It is argued that science learning is a gradual process during which initial conceptual structures based on children's interpretations of everyday experience are continuously enriched and restructured. Conceptual change also involves increased metaconceptual awareness, cognitive flexibility, and theoretical coherence. Some of the implications of this research for the development of science curricula and for instruction are discussed. It is also argued that while cognitive/developmental research can provide us with important information about the process of learning science, it does not provide much information about the external, environmental variables that can facilitate cognitive performance and conceptual change. What is needed in the future is the development of a theory of learning that bridges science education and cognitive/developmental research. Such a theory should specify the mechanisms that can take an individual from one level of cognitive performance to the next and relate them to situational and cultural factors.  相似文献   

La Resurrección de una voz: a response to rhizovocality     

Stella Silva 《International journal of qualitative studies in education》2013,26(5):715-717

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Preparing Undergraduate Pre-service Teachers Through Direct and Video-Based Performance Feedback and Tiered Supports in Early Head Start     

Adam S. Kennedy  Anna T. Lees 《Early Childhood Education Journal》2016,44(4):369-379

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Science and the major racket sports: a review   总被引：1，自引：1，他引：0  

Lees A 《Journal of sports sciences》2003,21(9):707-732

The major racket sports include badminton, squash, table tennis and tennis. The growth of sports science and the commercialization of racket sports in recent years have focused attention on improved performance and this has led to a more detailed study and understanding of all aspects of racket sports. The aim here, therefore, is to review recent developments of the application of science to racket sports. The scientific disciplines of sports physiology and nutrition, notational analysis, sports biomechanics, sports medicine, sports engineering, sports psychology and motor skills are briefly considered in turn. It is evident from these reviews that a great deal of scientific endeavour has been applied to racket sports, but this is variable across both the racket sports and the scientific disciplines. A scientific approach has helped to: implement training programmes to improve players' fitness; guide players in nutritional and psychological preparation for play; inform players of the strategy and tactics used by themselves and their opponents; provide insight into the technical performance of skills; understand the effect of equipment on play; and accelerate the recovery from racket-arm injuries. Racket sports have also posed a unique challenge to scientists and have provided vehicles for developing scientific methodology. Racket sports provide a good model for investigating the interplay between aerobic and anaerobic metabolism and the effect of nutrition, heat and fatigue on performance. They have driven the development of mathematical solutions for multi-segment interactions within the racket arm during the performance of shots, which have contributed to our understanding of the mechanisms of both performance and injury. They have provided a unique challenge to sports engineers in relation to equipment performance and interaction with the player. Racket sports have encouraged developments in notational analysis both in terms of analytical procedures and the conceptualization of strategy and tactics. Racket sports have provided a vehicle for investigating fast interceptive actions, hand-eye coordination and perception-action coupling in the field of motor control. In conclusion, science has contributed considerably to our knowledge and understanding of racket sports, and racket sports have contributed to science by providing unique challenges to researchers.  相似文献   

Intercultural adjustment and friendship dialectics in international students: A qualitative study     

Jean Hotta  Stella Ting-Toomey 《Int J Intercult Relat》2013

Despite the accelerating increase of international students on American campus, there is still a lack of in-depth understanding of how these individuals make sense of their adjustment journey or how they construct meaning concerning their friendship development experience. Existing adjustment research tended to focus primarily on the motivational goals of adjustment or the type of friendship network patterns (e.g., host national network, co-national network, or multi-national network) but did not probe deeper into the narratives of international students’ identity-change adjustment processes or the quality of their friendship networks. Using identity negotiation theory as a guide, this study utilized an interpretive methodology to examine the adjustment narratives and friendship stories of 20 international students. The findings revealed three themes: a variety of intercultural adjustment patterns and with a predominant upward trend or M-shaped adjustment trend, the role of cultural expectancy and personal time sense in intercultural friendship development, and identity shock issues and friendship dialectics. The findings have implications for the study of intercultural adjustment process and friendship development pattern especially concerning the intercultural friendship dialectics of feeling visible versus invisible, communication openness versus closedness, and feeling like a guest versus feeling like an alien.  相似文献   

Tharp's Funnel: A Conceptual Framework for Teaching about Religious Pluralism in Potok's My Name is Asher Lev and Zakiyyah's If I Should Speak     

Tonya Huber-Warring  Stella R. Bergman 《Multicultural Perspectives》2013,15(4):48-53

If teachers are to transcend mono-cultural borders and advocate for social justice in liberatory, critical pedagogical practice, then they must understand the relational and causative ethnogenetic layers of experience for students in the global community. Specifically, accommodating religious pluralism is a challenge facing educators today. Immersing themselves and their students in the lives of others through literary narratives provides one immediate and accessible strategy for exploring ethnogenetic experiences and crossing monocultural borders.  相似文献   

Understanding and measuring coordination and control in kicking skills in soccer: implications for talent identification and skill acquisition     

Davids K  Lees A  Burwitz L 《Journal of sports sciences》2000,18(9):703-714

In this review, we explore the role of motor control and biomechanics in developing an understanding of soccer skills using kicking as the main vehicle. The links between these sub-disciplines of sport science have not been well established in the past because of an emphasis on cognitive processes in traditional accounts of motor behaviour. We argue that a dynamical systems interpretation of the processes of coordination and control in movements with multiple degrees of freedom signals a new era in the relationship between the sub-disciplines of motor control and biomechanics. Although research on coordination and control of soccer skills is currently sparse, there are indications that the relationship between motor control and biomechanics could form a significant component of scientific programmes in talent identification and skill development. Further interdisciplinary work is needed to enhance understanding of coordination and control of soccer skills.  相似文献   

A three-dimensional kinematic analysis of the long jump take-off     

Graham-Smith P  Lees A 《Journal of sports sciences》2005,23(9):891-903

The long jump has been widely studied in recent years. Two models exist in the literature which define the relationship between selected variables that affect performance. Both models suggest that the critical phase of the long jump event is the touch-down to take-off phase, as it is in this phase that the necessary vertical velocity is generated. Many three dimensional studies of the long jump exist, but the only studies to have reported detailed data on this phase were two-dimensional in nature. In these, the poor relationships obtained between key variables and performance led to the suggestion that there may be some relevant information in data in the third dimension. The aims of this study were to conduct a three-dimensional analysis of the touch-down to take-off phase in the long jump and to explore the interrelationships between key variables. Fourteen male long jumpers were filmed using three-dimensional methods during the finals of the 1994 (n = 8) and 1995 (n = 6) UK National Championships. Various key variables for the long jump were used in a series of correlational and multiple regression analyses. The relationships between key variables when correlated directly one-to-one were generally poor. However, when analysed using a multiple regression approach, a series of variables was identified which supported the general principles outlined in the two models. These variables could be interpreted in terms of speed, technique and strength. We concluded that in the long jump, variables that are important to performance are interdependent and can only be identified by using appropriate statistical techniques. This has implications for a better understanding of the long jump event and it is likely that this finding can be generalized to other technical sports skills.  相似文献   

The effects of changing pace on metabolism and stroke characteristics during high-speed breaststroke swimming   总被引：1，自引：0，他引：1  

Thompson KG  MacLaren DP  Lees A  Atkinson G 《Journal of sports sciences》2004,22(2):149-157

Performances often vary between the heats and finals of breaststroke swimming competitions possibly because the swimmers try to conserve their energy, or for other tactical reasons. Additionally, coaches might advise either a 'positive' or 'even' pace race strategy during the final. The effect of such pacing changes on metabolism (blood lactate, heart rate, ventilation), ratings of perceived exertion, stroke kinematics and turning times have not been investigated. Nine male competitive breaststroke swimmers swam three paced (Aquapacer) 200-m trials, 48 h apart and in random order, at 98%, 100% and at an attempted 102% of their maximal 200-m time-trial speed. Responses in metabolic variables were similar between the 98% and 100% trials, but higher post-exercise blood lactate concentrations and respiratory exchange ratios were observed following the 102% trial. As the pace of trials increased, stroke rate was found to increase proportionately with stroke count. However, during the latter stages of the 100% trial, a disproportionate increase in the stroke count was observed, which led to a significant pacing error. This feature was more obvious in the 102% trial, where participants demonstrated 'positive pacing' and reported higher ratings of perceived exertion than for the 98% trial. During the early stages of the trials, turning times were initially shorter the faster the pace of the trial; however, as the trials progressed, this pattern was found to reverse. We conclude that a slight reduction in pace during near maximal breaststroke swimming altered kinematic but not post-exercise metabolic responses, while an increase in pace led to positive pacing and an increase in both kinematic responses and anaerobic metabolism.  相似文献   

School Schedules Affect Sleep Timing in Children and Contribute to Partial Sleep Deprivation     

Tâmile Stella Anacleto  Taísa Adamowicz  Laura Simões da Costa Pinto  Fernando Mazzilli Louzada 《Mind, Brain, and Education》2014,8(4):169-174

Although the environmental light/dark cycle is the main zeitgeber for the human species, the social cues seem to be important in the synchronization of circadian rhythms. In Brazil, the existence of two school schedules—one with only morning classes (MG) and other with only afternoon classes (AG)—allows the investigation of the effect of school activities on light exposure and sleep/wake patterns in children. Forty‐seven children wore wrist actimeters for a week for registration of light and sleep data. MG children presented shorter sleep duration on school days than the children from the AG. The results showed that during school days MG children were exposed to bright light earlier in the morning when compared to AG children. Nevertheless, there were no differences in light exposure after sunset. The results reflect the role of school schedules and artificial light in shaping light exposure, and its association with sleep timing in children.  相似文献