Perception of boys’ mother-son social interactions: Disruptive boys’ behaviors and involvement in learning tasks

This study focused on the relationship between social perception and children’s involvement in learning tasks. The interaction between disruptive boys’ (n=32) perception of the competence attributed to them by their mother, the mother’s behavior (verbal and physical intrusion) and the child’s involvement in learning tasks was observed in a laboratory setting. Boys were asked to solve easy and difficult tasks on a personnal computer under the supervision of their mother. Observations of mother-child interactions showed that disruptive boys with a negative perception of the competence attributed to them by their mother, were less involved in the difficult task than boys who had a positive perception. Mothers of the boys with a negative perception showed more verbal intrusions in the easy task and more physical intrusions in the difficult task than the mothers of boys with a positive perception. Mothers’ verbal intrusion, physical intrusion and boys’ involvement in the task discriminated 75% of the boys with a negative social perception. These results seem to indicate that disruptive boys do not constitute an homogeneous group and that a significant variation in their involvement in a learning task is related to their perception of the competence attributed to them by their mother.     

“It was smart when:” Supporting prospective teachers’ noticing of students’ mathematical strengths

Learning to name and notice students’ mathematical strengths is a challenging process requiring time and multiple iterations of practice for prospective teachers (PTs) to adopt. Mathematics teacher educators (MTEs) can approximate and decompose the complex practice of naming and noticing students’ mathematical strengths so PTs learn to teach mathematics while emphasizing what students know and can do. This study uses two tools MTEs can use to support PTs as they learn to name and notice students’ mathematical strengths: A LessonSketch experience, a digital platform with comic-based storyboards showing children engaged in a mathematics task, and a strengths-based sentence frame. Our study presents the findings from the 111 noticing statements from 18 PTs as they engaged in the LessonSketch digital experience and practiced making noticing statements about what children know about mathematics. The study found that after a sentence-frame intervention, the PTs are more likely to use strengths-based language and more likely to identify mathematical evidence in their noticing statements. Uncommitted language (statements that do not align with a strength- or deficit-based coding scheme), suggests a fruitful, yet complex space for supporting more PTs as they learn to name and notice students’ mathematical strengths. The paper concludes with implications for future research in teacher education.

     

Effects of early Leader–Member Exchange perceptions on academic outcomes

This study tested a series of hypotheses linking college support and quality of student?Cinstructor relations with outcomes including student efficacy, social connectedness with peers, expectancies and academic performance. Early quality of exchanges with the instructor using Leader?CMember Exchange theory was found to be a key indicator of academic outcomes. In addition, perceived organisational support was linked to ratings of instructor?Cstudent quality of exchanges, and the quality of exchanges between instructors and students served as an antecedent to social integration and academic self-concept. Academic self-concept was found to correlate with early perceptions of academic performance which, in turn, predicted students?? actual academic performance. Implications of this research include support for individualised rather than universal communication and interactions between instructors and students, development of relationships at the dyadic rather than group levels, and leadership as a means to develop student performance in a classroom setting.     

Numerical estimation in adults with and without developmental dyscalculia

It has been hypothesized that developmental dyscalculia (DD) is either due to a defect of the approximate number system (ANS) or to an impaired access between that system and symbolic numbers. Several studies have tested these two hypotheses in children with DD but none has dealt with adults who had experienced DD as children.This study aimed to compare these two hypotheses in an adult population in order to investigate which deficits still persist at that age. To that aim, numerical estimation tasks were given to adults who had or had not experienced DD as a child. Three of the estimation tasks required a mapping between the ANS and symbolic numbers: participants had to estimate the number of same or different-sized dots presented by producing the corresponding Arabic number or, conversely, to produce the number of dots corresponding to a presented Arabic number. A fourth task did not require any processing of symbolic numbers; participants had to produce a collection of dots of the same numerosity as another one previously presented.Consistently, in all the four numerical tasks and irrespective of whether the tasks used symbolic numbers or not, the estimates of DD participants were less accurate than those of the control participants. These results indicate that adults who had experienced DD as children continue to demonstrate a less precise magnitude representation.     

What animated illustrations conditions can improve technical document comprehension in young students? Format, signaling and control of the presentation

We study the comprehension of a multimedia technical document about gear functioning by young pupils. The research is focused on the effect of three factors on the construction of a mental model: illustration format (animated versus static) signaling cues (presence versus absence) learner-control of information delivery (three rhythms of presentation: speed, slow and self-controlled). The experimental procedure, conducted with 123 children, follows three phases: pre-test, individual passation of the lesson, comprehension test, delayed post-test. The goal of the pre-test is the evaluation of prior knowledge about gears, but also the control of spatial and verbal working memory aptitude and reading performance. The results show an effect of the animated format, of signaling cues and of the rhythm on the immediate comprehension test and delayed test. For the immediate comprehension test, these effects are different according to the kind of comprehension question (recall, transfer, explanation). These effects are maintained at the delayed post-test, for the self-controlled condition and for the pupils with low prior knowledge. The factor information delivery rhythm shows an effect for the delayed post-test. Our observation device of the behaviour of the child during the lesson was specially designed to explore the reading strategies between the medias.     

Pre-service teachers’ greater power to act in the classroom: analysis of the circumstances for professional development

This case study analysed the circumstances during a one-year work placement in which a pre-service teacher showed professional development, with a focus on the impact of her interactions with various interlocutors. The study was conducted within the framework of the cultural historical activity theory (CHAT) and of activity theory with its methods for the clinical study of activity. The results showed intra-psychic conflicts. produced by interactions with trainers, peers, experienced colleagues, and students. These conflicts prompted the development of the pre-service teacher’s professional activity through the construction of new goals and new motives for action (development through sense), and the construction of new operations to reach these goals (development through efficiency). This study thus opens the way for creating training programmes that favour the development of teachers’ power to act. It provides a source for transforming traditional mentoring methods in teacher training.     

Epistemological Foundations of School Science

Based on a synthesis of contributions from differentauthors, we present a theoreticalframework that provides some foundations for schoolscience, and we define someresearch problems. We start from what is already knownabout students' models andcognition in order to construct proposals of didacticalintervention. The cognitive modelof science, developed in the philosophy of science throughstudying scientists' activity,has allowed us to propose an analogous model for schoolscience in which experimentationand language play the key roles. We emphasise the relativeindependence of school scienceand scientists' science.     

Urinary creatine and methylamine excretion following 4 × 5 g · day−1 or 20 × 1 g · day−1 of creatine monohydrate for 5 days

Abstract

In this study, we examined the effect of two creatine monohydrate supplementation regimes on 24-h urinary creatine and methylamine excretion. Nine male participants completed two trials, separated by 6 weeks. Participants ingested 4 × 5 g · day^?1 creatine monohydrate for 5 days in one trial and 20 × 1 g · day^?1 for 5 days in the other. We collected 24-h urine samples on 2 baseline days (days 1–2), during 5 days of supplementation (days 3–7), and for 2 days post-supplementation (days 8–9). Urine was assayed for creatine using high-performance liquid chromatography and methylamine using gas chromatography. Less creatine was excreted following the 20 × 1 g · day^?1 regime (49.25 ± 10.53 g) than the 4 × 5 g · day^?1 regime (62.32 ± 9.36 g) (mean ± s; P < 0.05). Mean total excretion of methylamine (n = 6) over days 3–7 was 8.61 ± 7.58 mg and 24.81 ± 25.76 mg on the 20 × 1 g · day^?1 and 4 × 5 g · day^?1 regimes, respectively (P < 0.05). The lower excretion of creatine using 20 × 1 g · day^?1 doses suggests a greater retention in the body and most probably in the muscle. Lower and more frequent doses of creatine monohydrate appear to further attenuate formation of methylamine.