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Vandermoere F Blanchemanche S Bieberstein A Marette S Roosen J 《Public understanding of science (Bristol, England)》2011,20(2):195-206
In spite of great expectations about the potential of nanotechnology, this study shows that people are rather ambiguous and pessimistic about nanotechnology applications in the food domain. Our findings are drawn from a survey of public perceptions about nanotechnology food and nanotechnology food packaging (N = 752). Multinomial logistic regression analyses further reveal that knowledge about food risks and nanotechnology significantly influences people's views about nanotechnology food packaging. However, knowledge variables were unrelated to support for nanofood, suggesting that an increase in people's knowledge might not be sufficient to bridge the gap between the excitement some business leaders in the food sector have and the restraint of the public. Additionally, opposition to nanofood was not related to the use of heuristics but to trust in governmental agencies. Furthermore, the results indicate that public perceptions of nanoscience in the food domain significantly relate to views on science, technology, and nature. 相似文献
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Monnery Sandrine Seigneuric Alix Zagar Daniel Robichon Fabrice 《Reading and writing》2002,15(5-6):589-612
Williams syndrome (WS) is a rareneuro-developmental disorder characterised byspared language in the face of serious deficitsin nonlinguistic cognitive abilities. Weconducted a study on ten WS individuals inwhich gender agreement and gender assignmentwere assessed by means of two tasks: gendercategorisation and gender concord. Subjectsperformed gender categorisation to real nounswhose gender was regular or exceptional giventheir ending, and to invented nouns which werecomposed of nonword or word stems and realword-endings. The same material was used in thegender concord task in which subjects had tomatch the items with the appropriate form ofthe article and the adjective carrying genderagreement. In the gender categorisation of realwords, WS were lower than controls but bothgroups demonstrated a similar sensitivity togender-ending regularities. In the gendercategorisation of nonwords, the results showeda clear dissociation. The WS subjects producedmore ending-consistent responses than thecontrols. Contrary to the controls, WS reliedheavily on the gender clue provided by theending even when the gender of the word evokedby the stem of the invented word was opposed tothat evoked by the ending. Participants with WSwere not influenced by the specific word evokedby the stem of the invented word. In the secondtask (concord task), the WS subjects performed well although lower than thecontrols. We concluded that the WS people werenot impaired in gender agreement which relieson syntactic rules and/or on the extraction ofregularities but experienced difficulties inretrieving lexical instances. 相似文献
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Sandrine Turcotte 《Journal of Science Education and Technology》2012,21(6):808-825
This article describes in detail a conversation analysis of conceptual change in a computer-supported collaborative learning environment. Conceptual change is an essential learning process in science education that has yet to be fully understood. While many models and theories have been developed over the last three decades, empirical data to support them are scarce. The present paper aims to provide such evidence. To this end, the article first reviews seven proposed models of conceptual change before it recalls the main ideas behind the two different positions on conceptual change, the pieces (diSessa 2008) versus coherence (Vosniadou et al. 2008) positions. Then, the article presents and discusses how a close discourse analysis of asynchronous collaborative conversations between grade 5 and 6 students on buoyancy and relative density provides further empirical evidence of the knowledge in pieces position. 相似文献
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Guillaume Martinent Jean-Claude Decret Emma Guillet-Descas Sandrine Isoard-Gautheur 《Journal of sports sciences》2013,31(17):1648-1658
AbstractUsing self-determination theory (SDT) (Deci, E.L., & Ryan, R.M. (1985). Intrinsic motivation and self-determination in human behavior. New York, NY: Plenum) as the theoretical framework, we conducted a longitudinal investigation of the temporal ordering between motivation and burnout among youth athletes in intensive training setting. Data were collected from 145 table tennis players in intensive training centres at three time points during a 2-month period characterised by a simultaneous increase in social, physical and psychological demands for these athletes. Structural equation modelling of cross-lagged panel models was used to test the hypotheses. Results showed significant paths leading from athlete burnout – especially sport devaluation and reduced sense of accomplishment – at time 1 to amotivation, intrinsic and extrinsic motivations at times 2 and 3. Only two significant paths leading from motivation (introjected regulation at time 1) to burnout (emotional/physical exhaustion at time 2 and reduced sense of accomplishment at time 3) were identified. Overall, our results suggest that athlete burnout predicts motivation over time but motivation did not predict athlete burnout over time. Results are discussed in terms of current research findings on SDT. 相似文献
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The aim of our paper is to analyse the process of collaboration between independent firms linked by a technological agreement in the energy field, with a specific focus on the degree of codification of inter-organisational rules. Considering the agreement as a collection of different types of more or less codified rules, we show that their degree of codification and some other characteristics have an impact on the process of inter-firm cooperation.The paper first provides an analytical framework defining the concept and the types of rules relevant for our purpose. A rule is conceived to solve a problem of allocation or creation of resources; it serves a main function which can be of a cognitive, incentive or coordination nature; it is ambivalent, i.e. it entails side functions in addition to the main one. Two theoretical propositions are then developed and largely confirmed by our empirical research results based on two detailed case studies in the emerging field of fuel cell (FC) technology. 相似文献
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Markus Gerber Ralf Brand Franziska Antoniewicz Sandrine Isoard-Gautheur Henrik Gustafsson Renzo Bianchi 《Journal of sports sciences》2019,37(14):1673-1680
The development of cynical attitudes towards elite sport is a core symptom of athlete burnout and has been associated with dropout from elite sport. To date, this phenomenon has mainly been studied by investigating explicit attitudes towards sport, whereas athletes’ automatic evaluations (i.e. implicit attitudes) that have been shown to influence behavior as well were not considered. This study aimed to compare explicit and implicit attitudes towards sport of young elite athletes with high (N = 24) versus low (N = 26) burnout symptoms. Using self-reported measures, general and athlete burnout symptoms were assessed. Additionally, a single-target implicit association test was administered to examine participants’ automatic evaluation of sport. Statistical analysis revealed greater emotional/physical exhaustion and sport devaluation in athletes reporting high compared to low burnout symptoms. Implicit attitudes towards sport did not significantly differ between the groups. Furthermore, no significant correlations were observed between different athlete burnout symptoms and implicit attitudes. Athletes with high burnout symptoms show a tendency to explicitly detach themselves from sport, thus fostering sport devaluation as a core symptom of athlete burnout. However, this process does not seem to be reflected in their implicit attitudes towards sport. 相似文献
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Karine Corrion Fabienne D'Arripe-Longueville Aïna Chalabaev Sandrine Schiano-Lomoriello Peggy Roussel François Cury 《Journal of sports sciences》2013,31(8):909-919
Abstract We tested a hypothetical model that examined both the effects of implicit theories of ability on the judgement of cheating acceptability in a physical education context and the mediating role of the achievement goals defined in the social-cognitive model of achievement motivation. Data were collected from 477 middle-school students, who completed measures of implicit theories of ability, achievement goals, and judgement of cheating acceptability in team sports within a cross-sectional design. The results indicated that performance-approach and performance-avoidance goals mediated the relationships between entity theory and the judgement of cheating acceptability, and mastery-approach and mastery-avoidance goals mediated the relationships between incremental theory and the judgement of cheating acceptability. Further research is needed to determine whether these results would be replicated with other moral variables and other contexts. 相似文献
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The AIDS epidemic presents a complex of issues that require global answers, involving entire societies. The only sustainable
solution is to include all sectors of society in a multidisciplinary collaboration, within which the formal education system
plays a key role in delivering a comprehensive response to the disease at the national level. Moreover, in order to be effective,
governments must work in collaboration with parents, religious leaders, and community members. This article describes eight
key issues that must be addressed to establish a successful HIV/AIDS education curriculum. It also provides examples of best
practices from three countries. First, HIV education in schools should adopt a human rights perspective and address stigma
and discrimination against people living with HIV (PLHIV). Second, gender issues should be fully integrated into messages
about the disease and the whole community should be sensitized on this topic. Third, national curricula must be designed in
respect of religious perspectives; the most successful ones will include religious leaders in the process. Fourth, the language
and content used in designing education materials for schools must be culturally sensitive, as local traditions can influence
the transmission of HIV; those developing curricula should explore the best ways to incorporate positive traditions into formal
education initiatives. Fifth, governments are responsible for providing comprehensive and adapted messages about the disease
to children and youth in school settings; they must develop a national strategic policy on it and establish specific measures
established to protect PLHIV. Sixth, the family plays the primary role in providing information to children on sexuality and
HIV-related issues, even if parents and children sometimes find it hard to talk about. Parents must be informed so they can
play a more active role in educating their children in this area. Seventh, teachers and administrators are central to effective
HIV education; as they often complement parents’ roles, they need to be trained at pre- and in-service levels on these issues,
including sexuality. Finally, children and young adults should learn about sexuality and HIV and AIDS at various stages throughout
their development. It is crucial to adapt the content to the age and knowledge level of the target group. 相似文献