Convergence of Visions

The right for everyone to access “the promised land” of the InfoSociety is widely recognized. The “wiring of the universe” is now technically and financially possible. One should do it quickly in the respect of human values and rights, freedom of opinion, transparency and cultural diversity. However, in the context of communication developments in 1997, it is a multifacet issue of concern to all the countries. The cyberspace era brings many new challenges to the communications' academic curricula, professional practices, media owners and the research and development (R&D) of industries across the world. The emerging virtual communities change social and political relationships, as well as the job market well beyond national and linguistic boundaries. The paper examines the minimal conditions needed for this open process to take place with the participation of all players and the possible role of ORBICOM, the network of UNESCO Chairs in Communication.     

Conceptions of first‐year university students of the constituents of matter and the notions of acids and bases

Preconceptions of first‐year university students of the constituents of matter and the notions of acids and bases were investigated on a total of 400 students. The procedure used consisted of free interviews, semi‐structured interviews and questionnaires.

It was found that the constituents of matter were well known to students, but that interactions between these constituents were either totally unknown or were the subject of severe misconceptions. The students’ knowledge tended to be qualitative and formal, with a worrying lack of connection with everyday life.     

Psicología cognitiva y educación

RESUMEN

Este artículo es un intento de acercar la psicología experimental cognitiva a la práctica educativa. La gran distancia que separa a ambas se debe tanto a la falta de validez ecológica de muchas investigaciones como a la novedad y complejidad de este modelo. Sin embargo, los métodos de análisis elaborados por los psicólogos cognitivos pueden contribuir a mejorar los métodos de enseñanza. Por ejemplo, los enfoques procesuales nos hacen comprender los mecanismos implicados en algunos saberes escolares, como en las matemáticas. Pero también plantean algunos problemas, ya que son muy sensibles a las variaciones del contexto y poco explícitos con respecto a los mecanismos de cambio de los procesos. Por ello, hay que completar los enfoques procesuales con enfoques estructurales, como el desarrollado por Piaget, que establece la génesis y el desarrollo de las estructuras de las acciones y las operaciones del sujeto y que propone la llamada pedagogía operatoria, que se concreta en la utilización de métodos activos de educación.     

La Psicología de Vygotski: sobre la larga proyección de una corta biografía

RESUMEN

Se presenta el contexto histórico y los antecedentes familiares, culturales y sociales en los que surge la figura de Vygotski y se hace una descripción minuciosa de su obra, de sus implicaciones y contribuciones a la Psicología Científica: su teoría sobre las funciones superiores en el hombre, la actividad instrumental como unidad de análisis de estos procesos superiores, los estudios sobre génesis y desarrollo de los procesos cognitivos y las variaciones culturales, la “zona de desarrollo potencial”, sus aportaciones a la pedagogía y al estudio de las deficiencias, su teoría de la organización neurofisiológica, sus aportaciones a una teoría general del desarrollo y su teoría de la génesis del pensamiento verbal y la función reguladora del lenguaje. Se citan algunas críticas a Vygotski y se formulan algunas implicaciones teóricas no formuladas explícitamente en su teoría.     

Analysis and conservation of modern modeling materials found in Auguste Rodin's sculptures

Prior to the exhibition Portrait-making, Rodin and his models (2009), the Rodin museum wanted to restore two busts of Hanako and Clemenceau. Interestingly, these two sculptures contain pieces of modern modeling materials (MMMs) invented at the end of the nineteenth century as an alternative to clay or waxes. The poor state of conservation of the two portraits made any handling and exhibition impossible. Accordingly, the purpose of this article is twofold: to contribute to technical art history and conservation. Elemental and chemical analyses were done on samples from 12 sculptures (SEM–EDX, FTIR, GC–MS, GC–FID, XRD, synchrotron-based µXRF, µXANES, and µFTIR) aimed at identifying the composition of MMMs used by Rodin on plaster sculptures and establishing hypotheses about the origins of their degradation. This thorough study of their composition and degradation was necessary to implement an appropriate restoration plan. The development of conservation protocols adapted to such materials is rarely documented. Different tests were performed on mock-ups (pH, solubility, adhesion, consolidation, and cleaning). In particular, a protocol based on laser cleaning was developed and successfully applied to remove superficial dust and crusts so that the sculptures regained their original aspect.     

Cooperative learning: a relevant instructional model for physical education pre-service teacher training?

Background: One of the key questions of physical education teacher educators (PETE) programmes refers to whether future teachers are prepared to build knowledge and skills to feel self-efficacious in teaching physical education (PE). This issue concerns the instructional model of teaching used to help PE pre-service teachers to master both pedagogical knowledge and motor skills. According to this twofold challenge, the direct instruction (DI) is mainly used for pre-service teacher training. Beyond this traditional model, other instructional models as cooperative learning (CL) approach arise in the initial PE teacher education. Nevertheless, surrounding attempts at innovation, little information related to the instructor’s role. Under the social cognitive perspective of self-efficacy and instructional competency building, more information is currently expected with regard to the strategies the instructor uses to scaffold the mastery of skills for PE pre-service teachers’ effective teaching.

Purpose: The purpose of this article is to consider whether PE pre-service teachers are trained during short training sessions aimed to discover new physical activities. We examine the influence of a scaffolding procedure (CLS design) on PE pre-service teachers’ knowledge, skills and self-efficacy in comparison to a CL and a DI experience. This leads to consider to what extent this instructional support provided by the instructor would help pre-service teachers to perceive themselves as self-efficacious to teach contents in PE.

Participants and design: After a pre-test, sixty-nine PE pre-service teachers were randomly assigned to one of the three following conditions: CL (14 males and 7 females); CLS (20 males and 8 females) or direct instruction condition (DI; 12 males and 8 females). For the training session a selected CL procedure (Jigsaw) [Aronson, Elliot, and Shelley Patnoe. 1997. The Jigsaw Classroom: Building Cooperation in the Classroom. 2nd ed. Wokingham: Addison-Wesley Educational]) was used to split CL and CLS participants into mixed-sex teams, whereas DI participants practiced the same exercises in dyads. According to the training conditions, the same instructor provided different information to participants along the three 2-hour instructional sessions with regard to: (a) warm-up (DI), (b) CL organization (CL), and (c) scaffolding integrated into a CL implementation (CLS).

Data collection: A Pre-test/post-test design was used to consider PE pre-service teacher’s motor skill, knowledge for practice, and self-efficacy improvements. The post-test also examined participants’ pedagogical knowledge.

Findings: The results showed that the participants in the three conditions progressed on performance, knowledge for practice, knowledge for teaching, and self-efficacy. Although no difference was found in self-efficacy between the three training conditions over time, significant differences appeared on pedagogical knowledge or/and motor skills with an advantage for the CL and CLS participants, respectively.

Conclusion: Although short training sessions dedicated to discovering new sports stay problematic for teacher professional development, implementing CL pre-service teacher training designs would be a relevant alternative. Instructional knowledge would be developed mainly when they have explicitly access to information concerning the teacher intervention. Nevertheless, such a scaffolding procedure integrated into CL training designs would need to be applied repeatedly to various physical activities to have an impact on pre-service teachers’ self-efficacy.     

Ethyl Silicate for Unbaked Earth Tablets Conservation: Evaluation of the Physico-mechanical Aspects

ABSTRACT

Preservation of cuneiform tablets made with clay minerals is an ongoing conservation issue. A treatment based on TEOS consolidation has been used since 1996 at the Louvre museum. The characterization of the tablets pointed out kaolinite, illite, and smectite as the three main clay minerals constituting the objects. In this research, the physico-mechanical aspects of the treatment are investigated. The penetration depth of the TEOS solution and the gradient induced are quantified using laboratory samples. TEOS treatment preserves the macroscopic swelling and the vapour transfer properties, but modifies the clay’s affinity to moisture. Elastic properties are gradually improved for all clays, but only kaolinite’s strength increases significantly. The impact of TEOS treatment on the natural behaviour related to the respective structure of the clays is considered, and the amount of kaolinite required to create adequate reactions appears to be of interest for conservation treatments.     

A Developmental Study of the Self-Prioritization Effect in Children Between 6 and 10 Years of Age

Self-biases are well described in adults but remain poorly understood in children. Here, we investigated in 6–10 year-old children (N = 132) the self-prioritization effect (SPE), a self-bias which reflects, in adults, the perceptual advantage for stimuli arbitrarily associated with the self as compared to those associated with other persons. We designed a child-friendly adaptation of a paradigm originally introduced in adults by Sui, He, and Humphreys (2012) in order to test whether the SPE also occurs in children and if so, to determine its evolution with age. A robust SPE was obtained from the age of 6, and this effect was similar-sized in our four age groups. These findings are discussed with reference to the development of the self during childhood.