Metalinguistic skills in children: what develops?

Abstract

The aim of this study is to test developmental changes in metalinguistic skills in primary school children, using the distinction proposed by Bialystock (1986) between «analyzed knowledge» and «executive control», as two components of metalinguistic awareness involved in different tasks. 60 first, second and third grade children were individually interviewed on two tasks. In the first task (guided word substitution) children were asked to substitute an underlined word with five alternatives, thus producing new sentences to be judged on their semantic and/or morpho-syntactical acceptability. In the second task (free word substitution), children have to find out the word that can be cancelled and substituted with a new one. In both tasks children have to express an acceptability judgement, giving reasons for it. Each subject receives two scores for each task. Results from two-way Anova show that the «control» component does not change much, while the «analyzed knowledge» changes significantly, although also third grade children are more aware of semantic than of morpho-syntactic features of language.     

Does sensorimotor training improve the static balance of young volleyball players?

The aim of this investigation is to assess the effectiveness of a 6-week balance training (BT) protocol, integrated in regular training sessions, on postural sway of young female volleyball players (n = 26, age 13.0 ± 0.2 years) divided into two groups (intervention and control; 13 per group). Trials were performed for bipedal and unipedal stance conditions before and after the BT protocol, using a pressure platform to collect center-of-pressure (COP) time series that were processed to calculate sway area, COP path length, and maximum displacement range in anteroposterior and mediolateral directions. The intervention group exhibited smaller sway areas in eyes closed conditions (intervention = 42.76 mm², control = 67.60 mm²; p < 0.05) and Romberg quotients (intervention = 1.11 mm, control = 1.82 mm) in bipedal stance, while all the other parameters were unaffected. BT also reduced sway area (intervention = 122.70 mm², control = 187.18 mm²) and anteroposterior COP displacements (intervention = 20.18 mm, control = 22.38 mm) of the non-dominant limb for single-leg stance. No significant change was found for the dominant limb. Although it is possible to hypothesize a beneficial effect of BT on young athletes, further investigations are required to clarify its actual effect on balance performance with respect to normal volleyball training.     

Ageing of brazilwood dye in wool – a chromatographic and spectrometric study

Brazilwood was used in this work to dye wool mordanted with different amounts of copper(II) sulfate, alum and iron(II) sulfate. Two different dyeing methods were used: premordanting (MD) and simultaneous mordanting (M+D) procedures. In order to evaluate the influence of the mordant ion in the brazilein chromophore photodegradation, samples were subjected to artificial light ageing. Color measurements were made and, for the first time, LC-DAD-ESI-MS was used for chromophore analysis of the dyed fibers before and after light exposure. Mordant ion quantification was done after fiber acid digestion, by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and flame atomic absorption spectroscopy (FAAS). Mordant metal ion, mordant bath concentration and dyeing procedure were found to have strong influence in the wool fiber hues. Color variation was more pronounced in the alum dyed samples. Overall, mordant quantification showed that the amount of metal ions found in the fibers is very small when compared to the original concentrations of the dyeing bath, being Cu the ion with greater affinity for the wool fibers. MD dyeing procedure yielded fibers with larger amounts of mordant metal ions and higher chromophore peak areas. Higher amounts of brazilein were extracted from wool mordanted with copper(II) sulfate. Finally, chromatographic analysis of the brazilwood dyed samples before and after light exposure resulted in the detection of Type C compound as an outcome of the photodegradation process.     

Diversified production of red figured pottery in Apulia (Southern Italy) in the late period

Late Apulian red figured pottery [1] from Egnatia (Fasano, Brindisi, Italy) was studied in order to widen the view on this ceramic class in Southern Italy. Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) provided the samples elemental composition that allowed to make provenance hypotheses. Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) with Energy Dispersive Spectrometry (EDS), supplied information about the minero-petrographic features of the objects to better understand their production technology. The set of results highlighted the contemporary presence in the Apulian land in the late 4th century BC of both local and imported finds and showed the existence of two different kinds of local production, the “classic” Attic and a peculiar one, characterized by the application of an engobe layer before the black gloss. Our previous studies resulted in the discovery that an engobe layer, with similar chemical and minero-petrographic characteristics, was present in finds from another site in central Apulia (Monte Sannace). So the discovery of red engobe on fragments from Egnatia, proves that its use was not an isolated occurrence, but was quite common in the production of red figured in Apulia during the Late period, appearing as a peculiar technological mark of Apulian potters.     

The Beginnings of Hockey in 1930s Galicia (Spain): A Female Phenomenon

This article considers the early days of field hockey in Galicia from the perspective of a female phenomenon, as in this region women's teams emerged before those of their male counterparts. The fact that women were the first to play field hockey in Galicia, and formed the driving force behind this sport in the north-west of the Iberian Peninsula offers an interesting insight into the phenomenon of sport in 1930s Spain. The prevalence of Galician hockey teams and the presence of Galician players in international competitions provide ample evidence for this research. This article discusses the history of field hockey in Galicia, taking into account the influences of precursors. It also analyses the socialising aspect for women of participation in clubs and other activities related to hockey, as well as the role of sport in the creation of female sporting identities and the initiatives led by the women themselves. The text includes images with the objective of making the protagonists of the dissemination of women's sport in Spain more visible.     

Emotional profiles regarding maths among primary school children – A two-year longitudinal study

Learning maths is challenging for many primary school students, and teachers must understand students’ learning and emotional processes specific to learning maths. The current research, grounded in control-value theory, focused on achievement emotions regarding maths. Primary school students (N?=?71) were studied with the primary objective of examining the longitudinal trajectories of achievement emotions of third graders over two years. The Portuguese Achievement Emotions Questionnaire for Elementary Students was administered biannually to assess enjoyment, anxiety, and boredom regarding maths. The results indicate that enjoyment decreased and boredom increased over time, revealing three emotional profiles: positive, negative and moderate. The positive profile showed the highest scores in maths achievement. Profile membership was moderately stable and became increasingly stable and structured. In examining the complexity of students’ emotional profiles and processes, the importance of understanding them to enhance educational support, development, and learning was highlighted.

     

Literacy and literary learning on BookTube through the lenses of Latina BookTubers

In this study, we examine various aspects of BookTubers' literacy practices, regarding the personal and social factors that lead readers to devote themselves to the BookTube community, the elements that BookTubers consider as they create and publish video book reviews and the sort of literary learning this digital literacy practice entails. For this purpose, narrative interviews were conducted with six BookTubers, five of them from Latin America and one from Spain. Their answers offer insights into the motivations and unique types of learning that come together in this literary practice. A qualitative analysis of the interviews shows that affective engagement with books is a singular feature of BookTubers' understanding of reading culture and that literary video reviews are created in a complex bricolage process where resources, skills and knowledge are mobilised and develop, both aspects also being associated with the development of an online social reading identity. In addition, an ecological approach to analysing literacy and literary learning in the BookTuber culture points to the importance of framing video book reviews as a didactic resource with considerable potential to bring new learning practices to in-school literary education.