Supposer et postuler pour produire des connaissances scientifiques: une évidence ou une conquête théorique? Une étude des points de vue d'étudiants

Résumé De manière générale, l'évidence sensorielle et, plus particulièrement, visuelle constitue pour les étudiants le principal fondement du savoir scientifique: nul besoin de supposer pour connaître, tout est donné ou presque. Du point de vue de l'enseignement des sciences, cette croyance à saveur réaliste est particulièrement critique, notamment parce qu'elle conduit à penser que les concepts, lois et théories scientifiques procèdent d'un monde de matérialités plutôt que d'un monde de modèles et de relations. Au cours d'une recherche effectuée auprès d'un groupe-classe de 35 étudiants durant douze semaines, nous avons pu observer que, pour la majorité des étudiants, la compréhension du caractère construit et consensuel du savoir scientifique était facilitée par le développement d'une métaréflexion sur leurs propres productions de connaissance et les inévitables postulats et suppositions qui les fondent. Nous avons également pu observer qu'il découle de cette activité réflexive un modèle de science qui se distingue des modèles initialement tenus par les étudiants, par le pouvoir créateur et, surtout, le pouvoir de théoriser qu'il comporte: postuler, supposer, jauger collectivement de la plausibilité des résultats plutôt qu'en appeler à une instance occulte, voilà quelques-unes des conquêtes théoriques qu'ils ont effectuées et sur lesquelles nous allons nous attarder.

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Sensorial, and more specifically, visual evidence is generally regarded by students as the basis for scientific knowledge: no need to postulate to understand, all is almost or practically given. From a science-teaching standpoint, this rather realistic approach is critical and leads to the belief that scientific concepts, laws, and theories stem from a world of materiality rather than from a world of models and relationships. During a 12-week study a group of 35 college students, we observed that for the majority of them, the development of metareflection on how they produce knowledge, with the inevitable and inherent postulates and conjecture, facilitated their understanding of the constructed and consensual character of scientific knowledge. We also observed that this reflexive activity facilitated the development of a new approach to science that differed from those models previously used by the students in its creative potential and, more importantly, in the power of its theoretics: to postulate, suppose, and collectively estimate the plausibility of results rather than calling up occult instances. These and other theoretical achievements will be discussed in this paper.

     

The Role of Sex Hormone Replacement Therapy on Self-Perceived Competence in Adolescents with Delayed Puberty

The objective of the present study was to determine the role of sex steroids in the development of self-perceived competence during adolescence. The Harter Self-Perception Scale was administered to 56 adolescents with delayed puberty who were receiving depo-testosterone (males) or conjugated estrogens (females) administered in 3-month blocks alternating with placebo. Treatment was given at three dose levels approximating early, middle, and late pubertal replacement levels. Hormone treatments had a significant positive effect for both males and females in one subscale domain--perceived job competence. Significant positive hormone effects were also obtained for perceptions of romantic appeal and close friendship in females and perception of athletic abilities in males. It can be inferred from the results of this study that the hormonal changes associated with sexual maturation have targeted influences on specific domains of self-perceived competence and that there are clear gender differences.     

Food Fights: Cookbook Rhetorics,Monolithic Constructions of Womanhood,and Field Narratives in Technical Communication

Field narratives that (re)classify technical genres as liberating for women risk supporting the notion that feminism is a completed project in technical communication scholarship. This article suggests that technical communicators reexamine the impact of past approaches to critical engagement at the intersections of gender studies and technical communication; cookbooks provide a material example. The authors illustrate how a feminist approach to cookbooks as technical/cultural artifacts can productively revise field narratives in technical communication.     

Lifewide learning in the city: novel big data approaches to exploring learning with large-scale surveys,GPS, and social media

ABSTRACT

Despite UNESCO’s Learning Cities agenda, which argues for the mobilisation of resources to promote education across all sectors and environments, there is little evaluative research on Learning City engagement which is both naturalistic and empirically rigorous. The research on informal adult learning in urban contexts is particularly sparse. This paper provides a case study of informal learning and lifewide literacies amongst Glaswegian adults using three distinct approaches to data collection: a household survey capturing rich data on learning attitudes, behaviours, and literacies; GPS trails that track mobility around the city; and the capture of naturally occurring social media. The work operationalises Learning City indicators, and explores domains beyond education, some of which have not previously been considered in surveys of adult learning, for example, physical mobilities and transportation patterns. We use theoretical concepts of social identity and capital to situate inclusion within explanatory frameworks of marginalisation in less tangible domains of informal learning using multi-stranded data. A triangulated analysis of city-wide participation in lifewide learning reveals a demographic picture of groups marginalised from learning opportunities and practices. We conclude with a call for new approaches to exploring learning participation which offer novel methods to evidence informal learning and lifewide literacies.     

What's in a name? A comparison of methods for classifying predominant type of maltreatment

OBJECTIVE: The primary aim of the study was to identify a classification scheme, for determining the predominant type of maltreatment in a child's history that best predicts differences in developmental outcomes. METHOD: Three different predominant type classification schemes were examined in a sample of 519 children with a history of alleged maltreatment. Cases were classified into predominant maltreatment types according to three different schemes: Hierarchical regression analyses examined whether the HT, SFT, and EHT type classifications contributed to prediction of child behavior problems, trauma symptoms and adaptive functioning. RESULTS: After controlling for demographic factors, the HT definitions predicted four outcomes, while the SFT definitions predicted three, and the EHT classifications contributed to the prediction of five child outcomes. The co-occurrence of multiple types of maltreatment was robustly related to outcomes. However, the HT and SFT classifications predicted outcomes even after accounting for the co-occurrence of multiple maltreatment subtypes. CONCLUSION: A classification scheme that differentiates between type combinations and single maltreatment types may have the greatest predictive validity. Over and above knowing about co-occurrence of maltreatment sub-types, it is important to understand what type, or constellation of types, of maltreatment have been alleged in a child's history.     

Numeration a l'ecole elementaire

This paper presents results of research concerning the construction of the concept of natural integers by children. By testing the same children, whose school history was known with accuracy, at one year in tervals, we have sought to determine:

— How their competence in counting and numeration evolved during this period.

— What the mechanisms of this evolution were.

— What role school learning played.

     

An exploratory investigation of the effect of working in an environmentally themed facility on the conservation‐related knowledge,attitudes and behavior of staff

In the past decade, we have seen an increased focus on measuring the impact of zoos, aquariums, and other free‐choice learning environments on the conservation‐related knowledge, attitudes and behavior of the visiting public. However, no such studies have been conducted on the impact of such environments on the staff working in these facilities – the very staff that in turn interact with the public on a daily basis. Clearly these interactions are recognized as being important; for example, the thousands of staff employed by Disney’s Animal Kingdom are regularly provided with conservation‐related training – both formal, in‐class experiences, as well as more informal experiences with animals; these are a mixture of compulsory and freely chosen experiences. An exploratory qualitative study was conducted to investigate the impact of working at Disney’s Animal Kingdom on staff knowledge, attitudes, and behavior related to animals and their conservation. The resulting findings offer preliminary evidence that working in an environmentally themed setting has a positive impact on all of these variables, and that particular experiences – notably experiences in back‐of‐house animal holding areas and with animal staff – are key. These findings suggest that further investigation into the impact of working in such learning settings could be fruitful in understanding the role that the work place plays in supporting the free‐choice learning of staff. This is important both from the perspective of the staff themselves, and in relation to the impact that these individuals may have on visitors to free‐choice learning settings.     

Fathers and mothers at play with their 2- and 3-year-olds: contributions to language and cognitive development

Father-child and mother-child engagements were examined longitudinally in relation to children's language and cognitive development at 24 and 36 months. The study involved a racially/ethnically diverse sample of low-income, resident fathers (and their partners) from the National Early Head Start evaluation study (n=290). Father-child and mother-child engagements were videotaped for 10 min at home during semistructured free play, and children's language and cognitive status were assessed at both ages. Fathers' and mothers' supportive parenting independently predicted children's outcomes after covarying significant demographic factors. Moreover, fathers' education and income were uniquely associated with child measures, and fathers' education consistently predicted the quality of mother-child engagements. Findings suggest direct and indirect effects of fathering on child development.     

Catholic women educators’ discourse and educational measurement in the early twentieth century in the United States

ABSTRACT

In the early twentieth century in the United States, Roman Catholic schools grew in number and became increasingly regulated by state departments of education. This led to the increased influence of public school reform movements in Catholic schools. Some Catholic educators questioned these movements, while others embraced them. Educational measurement strategies, such as IQ and standardised testing, gained support from women religious orders and congregations, who made up the majority of the Catholic teaching force. For pragmatic reasons, they saw some value in the promises of modern educational science for teaching and learning. This practice, however, put them at odds with some of the beliefs and values of their Church. This study demonstrates how Catholic sister teachers attempted to shape the debate on the introduction and use of reform strategies like IQ and standardised testing. It also examines how Catholic sister teachers made use of Catholic beliefs and values to make arguments in favour of IQ and standardised testing in Catholic schools. Using agreed upon Catholic religious tenets and working within their gendered reality, Catholic sister teachers demonstrated how they tried to convince their colleagues, male and female, to come to an understanding around the use of educational measurement.