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1.
Thibaud Gruber Amélie Deschenaux Aurélien Frick Fabrice Clément 《Child development》2019,90(3):728-745
Group membership is a strong driver of everyday life in humans, influencing similarity judgments, trust choices, and learning processes. However, its ontogenetic development remains to be understood. This study investigated how group membership, age, sex, and identification with a team influenced 39- to 60-month-old children (N = 94) in a series of similarity, trust, and learning tasks. Group membership had the most influence on similarity and trust tasks, strongly biasing choices toward in-groups. In contrast, prior experience and identification with the team were the most important factors in the learning tasks. Finally, overimitation occurred most when the children's team, but not the opposite, displayed meaningless actions. Future work must investigate how these cognitive abilities combine during development to facilitate cultural processes. 相似文献
2.
Guillaume Costalat Jeremy Coquart Ingrid Castres Fabrice Joulia Olivier Sirost Eric Clua 《Journal of sports sciences》2017,35(7):678-687
We investigated the oxygen-conserving potential of the human diving response by comparing trained breath-hold divers (BHDs) to non-divers (NDs) during simulated dynamic breath-holding (BH). Changes in haemodynamics [heart rate (HR), stroke volume (SV), cardiac output (CO)] and peripheral muscle oxygenation [oxyhaemoglobin ([HbO2]), deoxyhaemoglobin ([HHb]), total haemoglobin ([tHb]), tissue saturation index (TSI)] and peripheral oxygen saturation (SpO2) were continuously recorded during simulated dynamic BH. BHDs showed a breaking point in HR kinetics at mid-BH immediately preceding a more pronounced drop in HR (?0.86 bpm.%?1) while HR kinetics in NDs steadily decreased throughout BH (?0.47 bpm.%?1). By contrast, SV remained unchanged during BH in both groups (all P > 0.05). Near-infrared spectroscopy (NIRS) results (mean ± SD) expressed as percentage changes from the initial values showed a lower [HHb] increase for BHDs than for NDs at the cessation of BH (+24.0 ± 10.1 vs. +39.2 ± 9.6%, respectively; P < 0.05). As a result, BHDs showed a [tHb] drop that NDs did not at the end of BH (?7.3 ± 3.2 vs. ?3.0 ± 4.7%, respectively; P < 0.05). The most striking finding of the present study was that BHDs presented an increase in oxygen-conserving efficiency due to substantial shifts in both cardiac and peripheral haemodynamics during simulated BH. In addition, the kinetic-based approach we used provides further credence to the concept of an “oxygen-conserving breaking point” in the human diving response. 相似文献
3.
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
4.
Fabrice Tranchida Léopold Tchiakpe Zo Rakotoniaina Valérie Deyris Olivier Ravion Abel Hiol 《Journal of Zhejiang University. Science. B》2012,13(4):307-317
As the consumption of fructose and saturated fatty acids (FAs) has greatly increased in western diets and is linked with an increased risk of metabolic syndrome, the aim of this study was to investigate the effects of a moderate (10 weeks) and a prolonged (30 weeks) high fructose and saturated fatty acid (HFS) diet on plasma FA composition in rats. The effects of a few weeks of HFS diet had already been described, but in this paper we tried to establish whether these effects persist or if they are modified after 10 or 30 weeks. We hypothesized that the plasma FA profile would be altered between 10 and 30 weeks of the HFS diet. Rats fed with either the HFS or a standard diet were tested after 10 weeks and again after 30 weeks. After 10 weeks of feeding, HFS-fed rats developed the metabolic syndrome, as manifested by an increase in fasting insulinemia, total cholesterol and triglyceride levels, as well as by impaired glucose tolerance. Furthermore, the plasma FA profile of the HFS group showed higher proportions of monounsaturated FAs like palmitoleic acid [16:1(n-7)] and oleic acid [18:1(n-9)], whereas the proportions of some polyunsaturated n-6 FAs, such as linoleic acid [18:2(n-6)] and arachidonic acid [20:4(n-6)], were lower than those in the control group. After 30 weeks of the HFS diet, we observed changes mainly in the levels of 16:1(n-7) (decreased) and 20:4(n-6) (increased). Together, our results suggest that an HFS diet could lead to an adaptive response of the plasma FA profile over time, in association with the development of the metabolic syndrome. 相似文献
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Mirko Maracci Claire Cazes Fabrice Vandebrouck Maria Alessandra Mariotti 《Educational Studies in Mathematics》2013,84(3):461-485
Mathematics education as a research domain is characterized by a plurality of theoretical approaches. Acknowledging the existence of such diversity and the risks of an excessive theoretical fragmentation does not mean to search for a unifying theory but to urge the community to develop strategies for coping with this diversity. This article is meant to show the potential of a “cross-analysis” methodology for establishing connections between different theoretical approaches to mathematics education with technology. Within the frame of the ReMath European Project, two Teaching Experiments were realized, centred on the use of a same ICT tool—Casyopée. Two distinct theoretical approaches shaped both the Teaching Experiments design and their enactments: the Theory of Didactical Situations and the Theory of Semiotic Mediation. The two Teaching Experiments have then been analysed from both theoretical points of view. In this article we will provide some examples drawn from this cross-analysis that show the synergy which can be established between the aforementioned theoretical approaches. Beyond contributing to a deeper understanding of the observed “didactical phenomena”, that synergy allows establishing connections between the two approaches that lead to their reciprocal enrichment. 相似文献
7.
Fabrice Delsahut 《Sport in Society》2019,22(11):1769-1782
AbstractJames Francis Thorpe became the first Native American to win a gold medal for the United States… and the first person in history to be disqualified for professionalism. Considered one of the most versatile athletes of modern sports, he won Olympic gold medals in the 1912 pentathlon and decathlon. He lost his Olympic titles after an investigation by the Amateur Athletic Union showed that he had played semiprofessional baseball in 1909 and 1910, before competing in the Olympics. In 1983, the International Olympic Committee (IOC) restored his Olympic medals. The seven decades that it took for the restoration of Thorpe’s medals were marked by a protean form of protest, drawing on the image of Thorpe as victor, victim, stereotype and symbol. Despite the rehabilitation of Thorpe, he remains in the eyes of Native Americans a powerful symbol of the humiliation of Native American peoples. 相似文献
8.
This article examines how a public relations crisis in the sport realm develops when national identity issues are at stake. Based on the media coverage of the All Blacks Rugby World Cup jersey crisis, and drawing on the concept of rhetorical arena, we explore Adidas's crisis communication strategies, identify and summarise the responses, actions, and interactions of various parties involved in the crisis. We consider how these parties influence the development of the crisis in what we call the ‘national rhetorical arena’. The article illustrates the power of the national rhetorical arena and its many voices to align over issues of national identity against a foreign sponsor making use of a national icon. When sponsoring national sport teams, foreign sponsors need to be aware they are only borrowing, not appropriating, important signifiers of national identity. They should make sure they do not impede the national public’s perceived entitlement to their national icons as any act of disrespect towards national identity is felt very strongly. In a crisis, they need to identify the potential voices in the national rhetorical arena, not underestimate the role of national media to shape and bring together these voices, not downplay the power of the national public, and not underestimate the strong undercurrent of nationalism especially during sport mega events. 相似文献
9.
Technological progress is often at the heart of improvements in quality of life. The development of personal computers (PCs) and the Internet are among the most important technological advances of the last century. PCs and the Internet have profoundly changed the way we access information, shop, view media, communicate, socialize, and spend our time. Despite the many benefits of computer and Internet use, certain population groups – especially low-educated and older consumers – have not yet fully adopted computer technology and the Internet in their daily lives. This paper estimates the effects of early-life education on computer and Internet use among older Italians. Using data on early-life educational attainment and computer and Internet use of older adults from the 2013 Survey of Health, Ageing and Retirement in Europe (SHARE), we exploit a historical increase in compulsory schooling in Italy as an instrumental variable for education to estimate the effects of early-life education on the adoption of PCs and on current use of the Internet. We find large and statistically significant effects of early-life education on later-life technology use among older persons who obtained additional education due to increased schooling requirements. In our benchmark estimations, one additional year of schooling resulted in an eight percentage point increase in the probability of having ever used a computer and in a 12 percentage point increase in the probability of reporting to have at least good computer skills. Individuals affected by the reform were also six percentage points more likely to have used the Internet in the last week. These findings are robust across different sample selection and model specification strategies. Our analysis also suggests that occupational choice and computer use at work are important channels through which education affects the adoption and use of computers and the Internet. Our findings thus highlight the likely importance of early-life education for later-life computer and the Internet use and perhaps technology adoption more broadly. 相似文献
10.
Jean-Loup Héraud Philippe Lautesse Fabrice Ferlin Hugues Chabot 《Science & Education》2017,26(3-4):299-322
Our work extends a previous study of epistemological presuppositions in teaching quantum physics in upper scientific secondary school in France. Here, the problematic reference of quantum theory’s concepts is treated at the ontological level (the counterintuitive nature of quantum objects). We consider the approach of using narratives describing possible alternative worlds to address the issue. These possible worlds are based on the counterfactual logic developed in the work of D. Lewis. We will show that the narratives written by G. Gamow describe such possible worlds. Some parts of these narratives are found in textbooks in France. These worlds are governed by laws similar to but importantly different from those in our real world. They allow us to materialize properties inaccessible to everyday experience. In this sense, these fiction stories make ontological propositions concerning the nature and structure of the fundamental elements of our physical universe. 相似文献