1,720,994 research outputs found
Erratum: Training numerical skills with the adaptive videogame “The Number Race”: A randomized controlled trial on preschoolers (Trends in Neuroscience and Education (2016) 5(1) (20–29) (S2211949316300035) (10.1016/j.tine.2016.02.002))
No full textErratum: In the paper by Sella, Tressoldi, Lucangeli & Zorzi (2016), the effect of Group in the ANCOVA for the Semantic subscale (p. 25) was associated with a p-value of.0546, instead of the reported.05, thereby approaching significance. This amendment does not affect the conclusions drawn in the article. We also note that assuming the Student's t-distribution would have been more appropriate than the normal distribution for computing the improvement index for the Mental Calculation scale, because the sample size (only for the latter scale) was below 30. Accordingly, the reported value of 44 would decrease to 43, without affecting the conclusions of the study. Finally, although clearly stated in the published article, we reiterate that Figure 2 (p. 25) shows the median and the 95% limits of the distribution of the improvement indexes obtained using a bootstrap procedure and not the results of the ANCOVAs
Math computerized games in the classroom: A number line training in primary school children
No full textSeveral studies have shown that the number line can be a useful tool to support early numeracy development. Here, we conducted a school-based training study to evaluate the effectiveness of the software “The Number Line” (“La Linea Dei Numeri”; Tressoldi and Peroni, 2013) in improving children's mathematical skills. We randomly allocated 10 classes of first, second and third graders (N = 183) to one of three experimental groups: one group played with The Number Line; the second group played with Labyrinth, a computerized game designed to train attention skills; the third group had no intervention (business-as-usual). At the end of the first training phase, children in The Number Line group completed another training phase playing with Labyrinth, whereas the other two groups played with The Number Line. After playing with The Number Line, all groups displayed more accuracy when placing numbers in the number line task. However, we observed no evident improvement in other mathematical skills. These results suggest that specific training effects emerge even in the school context, although transfer to other numerical skills may be harder to achieve
Imparare con la Robotica - Applicazioni di problem solving
No full textThe book presents an innovative path for teaching/learning scientific disciplines, based on the building and programming of educational robots (ER). ER is emerging as an effective approach to foster learning processes. Though disegned in favour of senior secondary schools, it may be used at the junior level with adaptations by teachers. The book contains 12 multidisciplinary activities, centered on problem solving, motivating the active participation of students, protagonist of all the phases of each experience (design, building, development, experimentation, analysis). Robots are considered more as educational tools than objects to be studied, helping teachers within their curricular discipline, particularly but not exclusively, maths, physics, computer science and sciences in general. After a methodological introduction, for each one of the presented experiences we provide: the text to be proposed to students, some teaching notes including building and programming instructions, and some questions to deepen the arguments
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The interplay between spatial ordinal knowledge, linearity of number-space mapping, and arithmetic skills
Full text linkThe ability to map numbers onto space has been widely investigated with the number line (NL) task. Accurate (linear) placement is typically preceded by a developmental phase in which children assign more space to small numbers and compress large numbers to the right part of the line, thereby resembling a biased log-like mapping. Here, we exploited a task that separately assesses direction, order and accuracy of spatial mapping (DOS task) to investigate the origin of the biased NL mapping in a sample of first and second graders. Children with reduced ordinal knowledge in the DOS task showed a more biased NL mapping, which was formally assessed using the leading mathematical models of the NL task. However, the log-like biased mapping did not emerge in the DOS task, thereby showing a lack of generalisation across different number-space mapping tasks. Both ordinal knowledge in the DOS task and linearity in the NL task related to arithmetic fluency beyond domain-general cognitive factors. We conclude that the NL task is a meter of children’s arithmetic skills rather than an expression of the mental representation of numbers
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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