Acquisition and use of shortcut strategies by traditionally schooled children

This study aimed at analysing traditionally taught children’s acquisition and use of shortcut strategies in the number domain 20–100. One-hundred-ninety-five second, third, and fourth graders of different mathematical achievement levels participated in the study. They were administered two tasks, both consisting of a series of two-digit additions and subtractions that maximally elicit the use of the compensation and indirect addition strategy (, so the answer is 2 + 1 or 3). In the first task, children were instructed to solve all items as accurately and as fast as possible with their preferred strategy. The second task was to generate at least two different strategies for each item. Results demonstrated that children of all grades and all achievement levels hardly applied the compensation and indirect addition strategy in the first task. Children’s strategy reports in the second task revealed that younger and lower achieving children did not apply these strategies because they did not (yet) discover these strategies. By contrast, older and higher achieving children appeared to have acquired these strategies by themselves. Results are interpreted in relation to cognitive psychological and socio-cultural perspectives on children’s mathematics learning.

Sexual abuse history among adult sex offenders and non-sex offenders: A meta-analysis

ObjectiveThe sexually abused–sexual abuser hypothesis states there is a specific relationship between sexual abuse history and sexual offending, such that individuals who experience sexual abuse are significantly more likely to later engage in sexual offenses. Therefore, samples of adult sex offenders should contain a disproportionate number of individuals who have experienced sexual abuse, but not necessarily other types of abuse, compared with samples of other types of offenders.MethodsWe compared rates of sexual and other forms of abuse reported in 17 studies, involving 1,037 sex offenders and 1,762 non-sex offenders. We also examined the prevalence of different forms of abuse in 15 studies that compared adult sex offenders against adults (n = 962) and against children (n = 1,334), to determine if the sexually abused–sexual abuser association is even more specific to individuals who sexually offend against children.ResultsWe observed a higher prevalence of sexual abuse history among adult sex offenders than among non-sex offenders (Odds Ratio = 3.36, 95% confidence intervals of 2.23–4.82). The two groups did not significantly differ with regard to physical abuse history (OR = 1.50, 95% CI = 0.88–2.56). There was a significantly lower prevalence of sexual abuse history among sex offenders against adults compared to sex offenders against children (OR = 0.51, 95% CI = 0.35–0.74), whereas the opposite was found for physical abuse (OR = 1.43, 95% CI = 1.02–2.02).ConclusionThere is support for the sexually abused–sexual abuser hypothesis, in that sex offenders are more likely to have been sexually abused than non-sex offenders, but not more likely to have been physically abused. We discuss potential mechanisms for the relationship between sexual abuse history and sexual offending, including the possibility that a third factor might account for the relationship.Practice implicationsThe most obvious implications of these findings is that the prevention of sexual abuse of children, either through prevention programs directly targeting children or through treatment programs targeting individuals who are likely to sexually offend against children (e.g., known sex offenders against extra-familial boys), may eventually reduce the number of sex offenders. This implication is dependent, however, on a causal role of childhood sexual abuse, and on the effectiveness of prevention and treatment practices.     

Are males always better than females in mental rotation? Exploring a gender belief explanation

Males outperform females in the Mental Rotation Test (MRT) for biological, strategic and cultural reasons. The present research tested a motivational explanation with the hypothesis that females could do better when induced to have positive beliefs and expectations. All-female and all-male samples were divided into six groups, each having listened to different instructions: 1. men are better than women at this task; 2. women are better than men; 3. control instructions with no gender reference. Each group was further allocated to either the easy or the difficult task expectations condition. Experimental manipulation affected performance differently in relation to gender. Women's performance was affected by positive instructions about gender. Men were affected by instructions about the task difficulty. Women improved performance and reached men's scores in the MRT when they were led to believe they were better than men.     

Active Listening: Web-based Assessment Tool for Communication and Active Listening Skill Development

The Instructional Design Portfolio

Active Listening: Web-based Assessment Tool for Communication and Active Listening Skill Development     

Roles, caring and learning to teach science

Classroom narratives and stories are rich and powerful in offering deep insights into classrooms and the reality of teaching—a reality critically re-examined in this forum. Discussing Maria’s narratives led to reflections about what it takes to support teachers to become agents of more equitable science practices. Factors such as time and identity-work are key dimensions of the authors’ struggle, but they also address understanding students in profound ways. The ways in which contradictions at different levels in the educational system can become sources of growth, reflection and action are discussed; yet no simple answers follow. Teaching and becoming a teacher are best understood as life-long processes of reflection and action and as political acts that entail challenging many boundaries. They also involve putting oneself into vulnerable roles and positions. This dialogue opens up many questions about how we can collaborate, guide and support both novices and experienced professionals in education as researchers, science staff developers, and teacher educators. It seeks to support the on-going quest to make science education authentic and equitable.     

EBLIP: bridging the language barrier

In the Using Evidence in Practice feature for this issue we invited Ghislaine Declève, a health librarian from Belgium who is active in Evidence Based Library and Information Practice, to provide a perspective on the uptake of the paradigm in non-English speaking countries. While her survey extends beyond the health domain it will prove of particular value to the HILJ readership, given that leadership of the movement continues to reside primarily within the health information sector.     

Development and initial validation of a multidimensional questionnaire on the relationship to work (RWQ)

The paper presents first the theoretical foundations used to develop a pre-experimental version of a questionnaire on relationship to work, and then the four stages of its initial validation leading to an experimental version. These stages included: (1) Defining the dimensions and sub-dimensions of the relationship to work concept; (2) Operationalizing the dimensions and sub-dimensions and creating the items; (3) Verifying the face and content validity and developing the pre-experimental questionnaire; (4) Testing the pre-experimental questionnaire with 550 workers and 538 students, assessing its psychometric properties and elaborating the experimental questionnaire.

     

On the exponential stabilization of a flexible structure with dynamic delayed boundary conditions via one boundary control only

This study deals with the stability analysis of a flexible structure with one and only one boundary control. The system is composed of three parts: a cart (motorized platform), a flexible cable, and a load mass attached to the lower part of the cable. This situation leads to a hybrid system as a mathematical model for the cable dynamics: one partial differential equation coupled to two ordinary differential equations. Despite the presence of a time-delay in the top-end of the cable, we are able to prove that the hybrid system is well-posed in the sense of semigroups theory and more importantly, only one boundary control can guarantee the exponentially decay of the energy of the system under reasonable conditions on the parameters of the system. This outcome considerably improves the result recently established in [17], where two more controls are required: one interior (Kelvin–Voigt) damping which acts over the entire cable and another boundary control which is exerted on the lower-end of the cable. Furthermore, we provide an estimate of the exponential decay of the system by means an appropriate Lyapunov functional. Lastly, numerical examples are presented in order to ascertain and highlight our theoretical outcomes.     

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.     

Curricula and curricular analysis: Some pointers for a debate

This introduction to our guest-edited issue provides a framework for reflecting on curricula, based on the four still fundamental questions raised by Tyler (Basic principles of curriculum and instruction. University of Chicago Press, Chicago, 1949) about effective ways to organize educational experiences that can meet the school’s educational purpose. The authors begin by decoding the Franco-European and Anglo-Saxon/North American approaches to the concept of curriculum, and seek points where the two are complementary. Using Tyler’s four questions, they then clarify the concept in a conceptual outline, organize it into a rational model, and seek a reference framework that can offer pointers for a debate on curriculum. They then show that, because a curriculum necessarily originates in a specific society, some of that society’s irrationality affects the nature of the curriculum. Thus, any curriculum experiences a tension between the rationality of the models that define it in theoretical terms and the irrationality of its surrounding society—which has the power to regulate it. Therefore, tools for curriculum analysis must consider all these dimensions, contradictions, and tensions to achieve a truly systemic perspective. While a system model is important for evaluation, it is also important to understand the less rational aspects and to place them in dialogue with their models. In this respect, providing pointers for the debate on curriculum remains a perilous exercise. Finally, the authors reflect on a systemic and holistic approach to the curriculum, and suggest pointers for contemporary reflection on curriculum.