Le développement de la mémoire de travail : perspectives dans le cadre du modèle de partage temporel des ressources

Working memory has a central role in cognitive development and its capacity is among the best predictors of high-level cognition and school achievement. Within the Time-Based Resource Sharing (TBRS) model, three main factors account for the development of working memory capacity. In this paper, we will review the main empirical evidence sustaining the impact of two of these factors on cognitive development. First, the amount of attention available for cognitive functioning might increase during childhood. Thus, for the same activities, older children would be able to process information faster than younger children. Within working memory span tasks, because the level of activation of memory traces decreases during the processing steps, any reduction of the duration of these steps directly diminishes the time during which the traces decay, and consequently increases the time available for reactivation or refreshing before the next processing step. These two effects jointly induce a stronger activation of the memory traces and a better recall of the to-be-maintained items. Second, because the main hypothesis of the TBRS model is that attention switches to refresh memory traces from processing to maintenance during the processing episodes, the efficiency of the refreshing mechanism should have a direct and strong impact on working memory functioning. An increase in the efficiency of this refreshing during childhood means that older children should take a greater advantage from the short pauses left free between each processing step. The level of activation of the memory traces would be then higher for older than for younger children, resulting in the classically observed increase in span. As a consequence, age-related changes in the efficiency of the refreshing could play a central role in working memory development.     

La mémoire à long terme des durées : fonctionnement et développement

Estimating the duration of an event often requires that we reference our own knowledge about the duration of similar events stored in long-term memory. The ability to preserve these durations in long-term memory therefore seems to serve an important function in time estimation. However, relatively few studies on this topic appear in the psychology literature. In the present article, we describe how time estimation models have treated long-term memory, and discuss relevant empirical data obtained from adults. Then, we present the results of recent experiments that examine 3- to 8-year-old children’s ability to maintain durations in memory, depending on the kind of previous experience the children have had with these durations.     

Le cycle journée/nuit : étude du développement des connaissances chez l’enfant français et comparaison de méthodes

The aim of this work is to study the knowledge development process about night and day cycle during ontogeny, by comparing two diverging theoretical and methodological approaches, on 178 elementary school children (6-7 years old, 8-9 years old and 10-11 years old). We hypothesis that the dimension (2D/3D) of the representation, the question type (open versus forced choice) and the age of the student have an effect on the amount of correct answers and on the coherence between the answers. The results show that the knowledge acquisition process regarding night and day cycle follows a gradual path during ontogeny and that the method used has a significant effect on the number of correct answers given by the children. Indeed, heliocentric model is given minority when children are asked with open questions (only 31% of the children). On the contrary 76% of them choose the heliocentric perspective when asked with forced-choice questions. The support's dimension (2D/3D) has no effect.     

Développement de la mémoire de travail : relations du centre exécutif avec la boucle phonologique et le calepin visuospatial chez des enfants de CE1 et de CM2

The aim of this study was to examine the development of working memory's components and their relationships. Phonological loop's, visuospatial sketchpad's and central executive's efficiencies were assessed by simple and complex span tasks and executive tasks with verbal and visuospatial material. The analyses were performed on 64 second-grade and 55 fifth-grade children's data. Developmental performances improvement was examined according to tasks and material. Analyses of variance revealed performances improvement according to age and type of material (verbal > non verbal) for the slave system tasks and for a part of central executive's tasks. Correlation analysis and exploratory factorial analysis suggested that slave systems would become progressively more specific and that central executive's efficiency would be dependent on this specialization.     

L’influence médiatique sur les jugements judiciaires : rôle du style d’écriture dans la formation des jugements

This article has two main goals: first, to review past research concerning the influence of pretrial publicity on judiciary judgements, and second, to present new empirical data concerning the impact of writing style in the media influence phenomenon. The three studies presented in this article show: 1/ that the morphosyntactical style of press articles can be distinguished as a function of the domain to which they pertain (judiciary, economic, politics, sports), 2/ that readers can readily recognize and identify the judiciary morphosyntactical style, and 3/ that the conformity of an article vs. its non-conformity to the judiciary style has some independent effect on memory about the article's content and on the elaboration of judiciary judgements by readers.     

Les nouvelles technologies au service des personnes âgées : entre promesses et interrogations - Une revue de questions

Based on a literature review, this article proposes to discuss the psychosocial stakes dependent for the use of new technologies for the elderly. This reveals that if these devices have undeniable assets which can contribute to improve comfort and with the quality of life of the elders, he does not remain about it less than the fast development of these technologies also cause a series of interrogations relating to the maintenance of the psychic and social integrity of these users. These systems can thus cause a new form of dependence (with the technical assistance) and accentuate - paradoxically - the stigmatization of people by the construction of a new profile: “the technically assisted elders”.     

L’alexithymie aujourd’hui : essai d’articulation avec les conceptions contemporaines des émotions et de la personnalité

More than thirty years after his introduction and despite many criticisms, the alexithymia concept is giving rise to a growing body of research and interest. Today, it is thought to reflect a deficit in the cognitive processing and regulation of emotion. After a brief historical introduction, this paper proposes an exploration of the links between the alexithymia construct, the multicomponent emotion theories and the five-factor model of personality. Specifically, the potential associations between alexithymia and emotion regulation are examined, referring to recent studies in psychology of emotions, neurobiology, cognitive psychology, developmental psychology and psychology of personality.     

Psychologie sociale et perception du temps : l'estimation temporelle des stimuli sociaux et émotionnels

Two experiments using a temporal bisection task investigated the influence of the social meaning of stimuli on the estimation of their duration. The results showed that: a) the duration of faces expressing diverse emotional states was overestimated relative to the duration of neutral faces; b) the duration of faces representing elderly people was underestimated relative to the duration of faces representing young people. In both cases, this influence was found to appear at the earliest stage of the estimation process, modulating the rhythm of the estimator's internal clock. In the discussion, we suggest three different perspectives to account for the observed link between social and temporal perception.     

La révision du texte : une activité de contrôle et de réflexion

Recent proposals in the field of text revision reveal significant changes in perspective concerning cognitive processes involved in writing. Whereas revision has been considered for a long time as being aimed at enhancing writing, this activity is now seen as a control of the different writing processes. Thus, planning is now added to this control process. Our review shows how results of novel studies strengthen this conception and in which way further researches should be pursued. In particular, we focus on three issues: training of control performed by expert writers, the cognitive cost of the required cognitive treatments and the conditions which permit to increase this control among writers during learning.     

Étude des déterminants personnels du comportement scolaire de l'élève : test d'un modèle structural

This study aims to grasp and understand the role of some personal features and some dynamical mechanisms of the personality in the determination of the pupil's academic behaviour. A general model is developed and tested, on a sample of 336 elementary school pupils, with respect to three principles: causal order, association and non-artificiality. The data analysis is then refined by developing a structural model. The results prove that the dynamical mechanisms of the personality relating to the affective entry characteristics should be considered as dependent and independent variables. They allow to identify the principal personal determinants of pupil rowdyism, reaction toward class, making friends and academic achievement.     

Le JCR facteur d’impact (IF) et le SCImago Journal Rank Indicator (SJR) des revues françaises : une étude comparative

One of the major functions of academic journals is to contribute to the evaluation of research activities and scientists. Invented more than 50 years ago, the ISI impact factor (IF) became the most important indicator of the quality of journals, in spite of well-known problems and critics such as the over-representation of English-language journals. This is a specific problem for French publishers and scientists; publishing in French is not valorising. Since 2007, the new SCImago Journal Rank Indicator (SJR) offers an alternative to the IF. SJR applies the Google algorithm (PageRank) to the journals of the SCOPUS bibliographic database that indexes more journals than ISI Web of Science. The goal of our study is to compare the two indicators for French academic journals, with three questions: Which is the coverage of French journals by ISI and SCOPUS (title number, scientific disciplines)? Which are the differences of the two indicators IF and SJR for the ranking of French journals? How do they cover the French academic journal publishing market (representativity)? The results of our study of 368 French journals with IF and/or SJR are in favour of the usage of the new indicator, at least as a complement to the IF. (1) Coverage: 166 journals are indexed by ISI (45%), 345 journals are indexed by SCOPUS (94%), 143 journals are indexed by both (39%). 82% of the journals are from STM, 18% are from SS&H. In particular, SCOPUS covers much better the medical and pharmacological sciences. (2) Ranking: The correlation of IF and SJR for the 143 journals with both indicators is high (0.76). The IF better differentiates the journals than the SJR indicator (155 vs. 89 rankings). On the other side, because of the larger source database, more French titles become visible on an international level through SJR than through IF. (3) Representativity: The SJR is more interesting and representative of the French academic journal publishing market than the IF (19% vs. 9%), especially for STM titles (38% vs. 19%), much less for SS&H titles (6% vs. 2%). Nevertheless, ISI (Web of Science) and SCOPUS index journals from only a small part of the French academic publishers (10%–20%). Again, SCOPUS is more representative than the ISI dababase (17% of the publishers vs. 10%). Methodological problems and perspective of a multidimensional evaluation are discussed. Our study compares the ISI impact factor (IF) with the new SJR for 368 French academic journals with IF and/or SJR. The results: The SJR coverage is better than of the IF (94% vs. 45%), especially in medical sciences. The correlation of IF and SJR for journals with both indicators is high (0.76). The IF better differentiates the journals than the SJR indicator (155 vs. 89 rankings). The SJR coverage is more representative of the French academic journal publishing market than ISI/IF (19% vs. 9%), especially for STM titles (38% vs. 19%), less for SS&H titles (6% vs. 2%).