Concurrent and longitudinal predictors of calculation skills in preschoolers     

Valentina Tobia  Paola Bonifacci  Gian Marco Marzocchi 《European Journal of Psychology of Education - EJPE》2016,31(2):155-174

Early calculation abilities in preschoolers are predictive of mathematics achievement in subsequent grades (e.g., Jordan et al. 2009). Two studies were conducted to evaluate concurrent and longitudinal predictors of early calculation skills. In the first study, 102 preschoolers (57.8 % female; mean age?=?60.57?±?8.66 months) were given vocabulary, language comprehension, and verbal working memory tasks and a test battery that evaluated components of early number competence (quantity comparison, counting, number line, size seriation, semantic knowledge of digits, visual-spatial memory). The children were also asked to complete early calculation tasks, including addition and subtraction calculations. The results of this task constituted the dependent variable. The results showed that vocabulary, size seriation, and visual-spatial memory were significant concurrent predictors of early calculation competence. In the second study, 43 children completed the early number competence battery at time 1 (53.5 % female; mean age?=?59.30?±?3.46 months) and the linguistic and early calculation tasks at time 2, about 10 months later (mean age?=?69.43?±?3.31 months). The analysis of the longitudinal predictors of early calculation showed significant effects for counting and size seriation. The implications for preschool assessment and intervention are discussed.  相似文献   

Convergent designs in fine fashion: An evolutionary model for stylistic innovation     

Rossella Cappetta Author Vitae  Paola Cillo Author Vitae  Anna Ponti Author Vitae 《Research Policy》2006,35(9):1273-1290

In this paper we propose and test an evolutionary model of stylistic innovation, that is the change in the aesthetic and symbolic elements of products and services. Style is an increasingly relevant phenomenon in many industries and our goal is to develop a model of how styles get introduced and adopted. We build on existent literature on technological change to frame the dynamics of how style changes across time. In the model we propose, companies face periods of ferment with relevant stylistic variations and periods of convergence on a single trend—that is the stylistic convergent design versus the technologic dominant design. We identify the drivers of convergence in stylistic innovation. We test the model with a longitudinal empirical study (1984-2002) in the fine fashion industry, explaining the main differences between a stylistic and a technological evolutionary model.  相似文献   

A Critical Review of Students’ and Teachers’ Understandings of Nature of Science     

Cofré  Hernán  Núñez  Paola  Santibáñez  David  Pavez  José M.  Valencia  Martina  Vergara  Claudia 《Science & Education》2019,28(3-5):205-248

Science & Education - There is widespread agreement that an adequate understanding of the nature of science (NOS) is a critical component of scientific literacy and a major goal in science...  相似文献   

Quality of grey literature in the open access era: Privilege and responsibility     

Paola?De?CastroEmail author  Sandra?Salinetti 《Publishing Research Quarterly》2004,20(1):4-12

Conclusions We are living a deep change in the information transfer process involving the different actors of the editorial scene (from authors to editors, web-editors, e-publishers and readers), who occasionally play different roles at the same time (e.g., authors sometimes bypass the editor thus assuming direct responsibilities in the diffusion of documents in the Internet). Furthermore, information producers, managers or seekers often show twofold personalities like Dr. Jekyll and Mr. Hyde. They would like to find all documents free on the Internet and be able to read original, reliable, and high quality information, but they are sometimes reluctant to spread their papers through online nonofficial channels as they care for the impact factor, prestige, and career advancement. It is a revolutionary period in which new and alternative forms of scholarly communication live together with more traditional ones and the future is difficult to define. Recent initiatives of open access—such as Pubmed Central, Public Library of Science, Budapest Open Access Initiative—are contributing to define new trends in the editorial market, challenging the traditional distribution channels, mainly managed by commercial editors, and placing the authors’ role and publication copyrights under severe discussion. In this landscape, GL now has new dignity and becomes closer and closer to innovative scientific publications supported by researchers in view of a generalised movement towards open access. The nuances of grey are becoming lighter and lighter. The questions are many, the answers few, but, in any case, the ethical responsibility of producing and issuing quality documents can never be disregarded.  相似文献   

Autism and multidisciplinary teamwork through the SCERTS Model     

Paola Molteni  Karen Guldberg  Nick Logan 《British Journal of Special Education》2013,40(3):137-145

This research investigates multidisciplinary teamwork in an English special school located in the West Midlands region of the UK. The research was carried out by Paola Molteni, a PhD student at Università Cattolica del Sacro Cuore, Milan, Karen Guldberg of the Autism Centre for Education and Research Director at the University of Birmingham School of Education, and Nick Logan, head of the Psychology and Therapists Department at Sunfield Children's Home, Clent. The school uses the innovative SCERTS (Social Communication, Emotional Regulation, Transactional Support) model. The methodology was a collaborative and participatory case study focused on the point of view of professionals and on understanding the teamwork process through analysis of three teams working together to implement SCERTS. Methods included focus groups, semi‐structured interviews, direct observations and questionnaires; the data were analysed using the Interpretative Phenomenological Analysis method. The research provides an example of good practice and enables practitioners to reflect on the issues involved in implementing a multidisciplinary process using the SCERTS approach. The findings show that the SCERTS Model can support the educational team in promoting and exchanging good daily practice and planning educational work together. The article draws out implications for further studies that aim to analyse teamwork in other settings and over a longer period.  相似文献   

Introductory editorial comments     

Paola Merli 《Cultural Trends》2009,18(1):103-104

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Energy balance of locomotion with pedal-driven watercraft   总被引：1，自引：0，他引：1  

Zamparo P  Carignani G  Plaino L  Sgalmuzzo B  Capelli C 《Journal of sports sciences》2008,26(1):75-81

In this study, we examined the mechanics and energetics of locomotion with a paddle-wheel boat and a water bike. Power output (Wtot) was measured directly on the water bike by means of an instrumented chain-ring. The simultaneous assessment of oxygen uptake (VO2) allowed the computation of the "overall" efficiency of locomotion (etao = Wtot/VO2). Mean etao was 0.27 (s = 0.02), which was unaffected by the speed, and was assumed to be the same for the two boats as both are semi-recumbent bicycles. For the paddle-wheel boat, Wtot was then obtained from etao and measures of VO2. The power to overcome (passive) drag was calculated as Wd = D x v (where D is the force measured by means of a load cell when towing the boats at given speeds). Propelling efficiency was calculated as etap = Wd/Wtot, which was lower with the paddle-wheel boat (mean 0.35, s = 0.01) than with the water bike (mean 0.57, s = 0.01). The observed differences in etap and Wd explain why at the highest speed tested (approximately 3 m s(-1), the energy required to cover a unit distance with the water bike is similar to that required to move the paddle-wheel boat at 1.3 m s-1).  相似文献   

Let's keep in contact with Europe — a joint European research project about lifelong education for adults with learning difficulties     

Samuel Fernandez  Janos Kovari  Paola Vulterini  & Val Williams 《British Journal of Special Education》2002,29(2):83-90

The authors of this article come from a range of professional backgrounds in agencies across Europe. Samuel Fernandez lectures at the University of Oviedo in Spain; Janos Kovari works at the Kerek Vilag Foundation in Hungary; Paola Vulterini works for Capodarco, a service provider in Italy; and Val Williams is a researcher at the Norah Fry Research Centre at the University of Bristol. Using funding from the European Commission, the team undertook research into the curriculum provided for adults with learning difficulties in a variety of centres in their four home countries. Fernandez, Kovari, Vulterini and Williams find some interesting similarities and some significant differences in provision. They also seek the views of service users about a common core curriculum derived from their research and present a case for further work in this important area.  相似文献   

The Simple View of Reading in Bilingual Language-Minority Children Acquiring a Highly Transparent Second Language     

Paola Bonifacci  Valentina Tobia 《Scientific Studies of Reading》2017,21(2):109-119

The present study evaluated which components within the simple view of reading model better predicted reading comprehension in a sample of bilingual language-minority children exposed to Italian, a highly transparent language, as a second language. The sample included 260 typically developing bilingual children who were attending either the first 2 years (n = 95) or the last 3 years (n = 165) of primary school and who had Italian as an instructional language. Children were administered a comprehensive battery for the assessment of decoding skills, listening comprehension, and reading comprehension latent variables. Results showed that, in both groups, listening comprehension was the most powerful predictor of reading comprehension, followed, only for younger children, by reading accuracy. Reading speed was not a significant predictor. These results confirmed the primary role of listening comprehension in predicting reading comprehension in bilinguals and added important evidence regarding the role of reading accuracy as a predictor of reading comprehension.  相似文献   

Children's Early Decontextualized Talk Predicts Academic Language Proficiency in Midadolescence     

Paola Uccelli  Özlem Ece Demir-Lira  Meredith L. Rowe  Susan Levine  Susan Goldin-Meadow 《Child development》2019,90(5):1650-1663

This study examines whether children's decontextualized talk—talk about nonpresent events, explanations, or pretend—at 30 months predicts seventh-grade academic language proficiency (age 12). Academic language (AL) refers to the language of school texts. AL proficiency has been identified as an important predictor of adolescent text comprehension. Yet research on precursors to AL proficiency is scarce. Child decontextualized talk is known to be a predictor of early discourse development, but its relation to later language outcomes remains unclear. Forty-two children and their caregivers participated in this study. The proportion of child talk that was decontextualized emerged as a significant predictor of seventh-grade AL proficiency, even after controlling for socioeconomic status, parent decontextualized talk, child total words, child vocabulary, and child syntactic comprehension.  相似文献