Newborns’ Perception of Left–Right Spatial Relations

Five experiments examined 79 newborns’ ability to discriminate and categorize a spatial relation, defined by the left–right spatial position of a blinking object‐target with respect to a vertical landmark‐bar. Three‐day‐old infants discriminated the up versus low position of an object located on the same side of the landmark‐bar (Experiment 1) and recognized a basic left–right spatial invariance of the object‐target and the landmark‐bar in conditions of low (Experiment 2) and high (Experiment 3) perceptual variability of the object’s positions. Additional evidence ruled out the possibility that newborns were unable to discriminate the within‐category left–right spatial positions of the object‐target (Experiment 4) or made a categorical distinction based on spatial distance rather than on categorical spatial relations of left of and right of (Experiment 5).     

The effects of two different correction strategies on the snatch technique in weightlifting

Improving motor skills represents one of the major issues in motor control and motor learning literature. The aim of this study was to investigate which of two strategies, method of amplification of error (MAE) or direct instruction (DI), would be more beneficial for error correction of the snatch technique. Thirty well-trained male weightlifters were randomly assigned to one of three training conditions (MAE, DI and Control). The experiment took place in only one practice session in which each lifter performed 3 pretraining trials, 8 training intervention trials, and 3 post-training trials, and a retention test session after 1 week. An optoelectronic motion capture system was used to measure the kinematic parameters of the weightlifting performance. After the training intervention, data showed that the MAE group revealed a greater improvement in several kinematic parameters when compared to the DI and Control groups, and the benefits derived from its application were still present 1 week later in the retention test. Nevertheless, the findings of the present study should be interpreted with caution due to the relatively small sample size; further research will also be necessary to evaluate the effects of MAE with different ability levels and other sport skills. The present findings could have practical implications for sport psychology and physical education because while practice is obviously necessary for improving learning, the efficacy of the learning process is essential in enhancing learners’ motivation and sport enjoyment.     

Early Evidence of Modular Templates Used to Draw Human Figures on Mural Paintings: The Etruscan Tomba degli Scudi in Tarquinia

ABSTRACT

During recent conservation work carried out on the Etruscan mural paintings in the Tomba degli Scudi, (Tarquinia, 4th C. BCE), the study of the execution techniques led to an amazing discovery: human figures were composed using templates of single body parts. In the Tomba degli Scudi, the perfect overlap of limbs, chests, and heads was confirmed after processing rectified photogrammetric images of the wall paintings with photo editing software. The study also highlighted that such templates were probably made of rigid material and each one had three different sizes, in order to represent the hierarchical organization of the painted characters. In the past, scholars have demonstrated that templates were used to realize a number of Etruscan wall paintings. However, they had reported that only whole figures were reproduced. The notion that such templates consisted of single anatomical parts purposely created to portray figures in different poses never occurs in their studies. In fact, the use of modular templates, also called patroni and antibola, is acknowledged only from the Middle Ages onwards both in western and eastern art. Earlier evidence had never been found. This article aims to predate the use of modular shapes by about ten centuries, thus changing our knowledge of technologies whose tradition spans from the Classical Antiquity to the Middle Ages. Consequently, a new approach to the study of transfer techniques of preparatory drawings in Etruscan wall paintings is established. Furthermore, this article shows that, as in the Middle Ages, the size of such templates was scaled up or down to create hierarchies among the painted characters.     

An extention of the school moral atmosphere construct, and its association with aggressive behaviours in secondary school

The first aim of this research is to introduce and to validate the new concept of School Normative Context, that revisits the concept of School Moral Atmosphere studied by Brugman and his colleagues through the SMAQ (1999) and validated also in the Italian context (Mancini & Fruggeri, 2005). The School Normative Context entails two new aspects: The first one concerns the interactive dimension of each specific school context and the second one concerns the perception of responsibility (internal vs, external) in the implementation of the norm. The second aim is to study the relation among adolescents perception of School Normative Context, adolescents’ orientation towards social rules and their aggressive behaviours against classmates at school. 268 students (mean age 17,01) attending three Italian high schools of three different educational levels (Lyceum, technical and professional) participated in this research. They filled a questionnaire composed of three parts: School Normative Context Questionnaire (SNC), Normative Orientation Scale (NOS) and Aggression Scale (Orpinas, Frankowski, 2001). School Normative Context has shown an acceptable degree of conceptual and predictive validity. The research has shown that the School Normative Context has an influence on the aggressive behaviours against classmates. Furthermore, it is a mediating factor between the adolescents’ orientation towards social norms and their aggressive behaviours at school.     

Anthropometry and body composition of female handball players according to competitive level or the playing position

Abstract

Anthropometry and body composition were investigated in 43 female handball players from the Italian championships, grouped according to their competitive level (elite vs. sub-elite) or their playing position [goalkeeper (n = 7), back (n = 14), wing (n = 18), or pivot (n = 4)]. The anthropometry consisted of several circumferences, lengths, widths, and skinfold measurement at six sites; the regional and total body compositions were assessed by means of dual-energy X-ray absorptiometry (DXA). One-way ANOVA was used for statistical analysis, with a Bonferroni post-hoc test where needed. The results showed that elite players have significantly lower percentages of fat and higher bone mineral content than sub-elite as well as a clear tendency to accrue more lean mass, especially in upper limbs. Overall, the physical characteristics and body composition of handball players in Italy compared unfavourably with those in other countries, suggesting a need for improved selection and training. When playing position was included in the analysis of the whole group of handball players (n = 43) significant differences were found between the stature, mass, body mass index (BMI), several skinfolds, circumferences and lengths, and total body mineral mass, lean mass and fat mass of players in different positions. Post-hoc analysis suggests that players on the wing and in goalkeeper positions differed most from one another. These findings confirm and expand on previous data about the presence of anthropometric differences within playing positions in handball.     

Windows into Children’s Thinking: A Guide to Storytelling and Dramatization

Telling and dramatizing stories is an increasingly popular addition to the preschool curriculum, largely due to the attention this activity has received through the writings of Vivian Paley (Bad guys don’t have birthdays: fantasy play at four. The University of Chicago Press, Chicago, 1988; The boy who would be a helicopter: the uses of storytelling in the kindergarten. Harvard University Press, Cambridge, MA, 1990; A child’s work: the importance of fantasy play. The University of Chicago Press, Chicago, 2004). While the writings of Paley and others (Cooper, When stories come to school: telling, writing, and performing stories in the early childhood classroom. Teachers & Writers Collaborative, New York, 1993; Engel 1999) focus on the social and cognitive outcomes children experience as a result of storytelling, less has been written about the process of writing and dramatizing stories with young children. This article discusses procedures and considerations that enhance storytelling with preschool children, including effective prompts for encouraging children’s creativity, potential trouble spots such as aggression in stories, and ways that storytelling can enhance home-school relationships.     

Factors affecting willingness to mentor

The paper presents a survey among 300 employees in Northern Italy to assess the willingness to mentor and identify the factors that affect it. Men and respondents with previous mentoring experience indicate a higher willingness to be a mentor. Willingness is affected by personal characteristics that are perceived as necessary for a mentor and the perceived benefits and drawbacks of mentoring.     

The Representation of Virtual Reality in Education

Students' opinions about the opportunities and the implications of VR in instruction were investigated by administering a questionnaire to humanities and engineering undergraduates. The questionnaire invited participants to rate a series of statements concerning motivation and emotion, skills, cognitive styles, benefits and learning outcomes associated with the use of VR in education. The representation which emerged was internally consistent and articulated into specific dimensions. It was not affected by gender, by the previous use of VR software, or by the knowledge of the main topics concerning the introduction of IT in instruction. Also the direct participation in a training session based on an immersive VR experience did not influence such a representation, which was partially modulated by the kind of course attended by students.     

Stretching of DNA confined in nanochannels with charged walls

There is currently a growing interest in control of stretching of DNA inside nanoconfined regions due to the possibility to analyze and manipulate single biomolecules for applications such as DNA mapping and barcoding, which are based on stretching the DNA in a linear fashion. In the present work, we couple Finite Element Methods and Monte Carlo simulations in order to study the conformation of DNA molecules confined in nanofluidic channels with neutral and charged walls. We find that the electrostatic forces become more and more important when lowering the ionic strength of the solution. The influence of the nanochannel cross section geometry is also studied by evaluating the DNA elongation in square, rectangular, and triangular channels. We demonstrate that coupling electrostatically interacting walls with a triangular geometry is an efficient way to stretch DNA molecules at the scale of hundreds of nanometers. The paper reports experimental observations of λ-DNA molecules in poly(dimethylsiloxane) nanochannels filled with solutions of different ionic strength. The results are in good agreement with the theoretical predictions, confirming the crucial role of the electrostatic repulsion of the constraining walls on the molecule stretching.