The Vestiges of Childhood Interparental Conflict: Adolescent Sensitization to Recent Interparental Conflict

This study examined whether childhood interparental conflict moderated the mediational pathway involving adolescent exposure to interparental conflict, their negative emotional reactivity to family conflict, and their psychological problems in a sample of 235 children (M_age = 6 years). Significant moderated-mediation findings indicated that the mediational path among Wave 4 interparental conflict during adolescence, change in youth negative reactivity (Waves 4–5), and their psychological problems (Waves 4–6) was significant for teens who experienced low, rather than high, levels of childhood interparental conflict (Waves 1–3). Supporting the stress sensitization model, analyses showed that adolescents exposed to high interparental conflict during childhood evidenced greater increases in negative reactivity than their peers when recent parental conflicts were mild.     

Mission to Planet Markle: Problem-Based Learning for Teaching Elementary Students Difficult Content and Practices

Research in Science Education - Young children can struggle to learn difficult disciplinary content and important skills for practicing science. Problem-based learning (PBL) may be useful for...     

The impact of cognitive communities on the diffusion of academic knowledge: Evidence from the networks of inventors of a French university

Looking at micro-data on the networks of inventors of a French science university, we investigate whether the kind of cognitive relationships between researchers influences the geography of their collaborations.The hypothesis we test (and confirm empirically) is that academic knowledge diffuses in a restricted geographic area when the connected researchers belong to epistemic communities, whereas communities of practice entail less localised effects. We also show that institutionally mixed research teams do not impede large knowledge diffusion.     

Compression of parallel texts

The world-wide use of digital storage and communications devices is increasing the need to make texts available in multiple languages. In this article we explore the possibility of storing a compressed form of a translated version of a text, taking advantage of the availability of the original text. The original text provides some of the semantic content of the text that is to be compressed, and therefore makes it possible for compression to be more efficient than if that information were not available. We begin with an experiment to evaluate the information content of a text when a parallel translation is available. This is achieved by having human subjects guess texts letter by letter, with and without a parallel translation. The perceived information content of a text can be determined from the way subjects make their guesses. The design and results of this experiment are described. The main conclusion is that while the text is considerably more predictable with the aid of a parallel translation, there is a surprising amount of information introduced by the translation. Insights obtained from this experiment are then applied in the design of a mechanical system for compressing parallel texts. The system stores one translation of a text intact, and then compresses further translations of the text with the aid of the original. The method described is able to compress texts significantly better than is possible without the aid of a parallel text. Aspects of the design are also applicable to future compressors that might take advantage of the semantic content of a text to obtain better compression.     

The Delphi Project: Transforming Flemish Libraries Into User-Oriented Points of Information

ABSTRACT

Flemish libraries have historically been praised by visitors and valued by the general public, but since the turn of the century, they have seen a decline in usage. A group of libraries in Flanders believed the role of libraries should be substantially reevaluated. They embarked on the “Delphi Project” to establish methods for libraries to become centers of their local communities by focusing on the information needs of their customers. The emergence of technology supported a shift from libraries as lending institutions to information centers. In addition to a customer service philosophy and training, online tools have helped staff reach library users. An online tool called the “Bronnenwijizer” combines searching the local library catalogue, provincial and state catalogues, and the Internet. The tool also supports the creation of “baskets” for a patron's information needs that can be shared with other staff. Delphi libraries have also used “Infopleinen,” Web-based guides to topics featuring printed media and online sources. Finally, a new online question registration system was developed that fit the new Delphi service philosophy. Over half the libraries in West-Vlaanderen are entitled to call themselves Delphi Libraries, and the philosophy is being disseminated more broadly through the Delphi Project Web site. Due to governmental changes in provincial authority, the future of the project is challenged because coordination among libraries has been critical for the project's success.     

Assessing children's emotional security in the interparental relationship: the Security in the Interparental Subsystem Scales

Guided by the emotional security hypothesis, this study reports on the development of a new self-report measure that assesses children's strategies for preserving emotional security in the context of interparental conflict. Participants were 924 sixth, seventh, and eighth graders and a subset of their mothers, fathers, and teachers. Exploratory and confirmatory factor analyses of the Security in the Interparental Subsystem (SIS) Scale supported a seven-factor solution, corresponding well to the three component processes (i.e., emotional reactivity, regulation of exposure to parent affect, and internal representations) outlined in the emotional security hypothesis. The SIS subscales demonstrated satisfactory internal consistency and test-retest reliability. Support for the validity of the SIS Scale is evidenced by its significant links with parent reports of children's overt reactivity to conflict, children's responses to interparental conflict simulations 6 months later, and children's psychological maladjustment and experiential histories with interparental conflict across multiple informants (i.e., child, mother, father, and teacher). Results are discussed in the context of developing recommendations for use of the SIS and advancing the emotional security hypothesis.     

Using argumentation as a learning strategy to improve student performance in engineering Statics

ABSTRACT

Research suggests that a significant reason that a large number of students earn low grades in the fundamental engineering science course Statics is that they may be entering the course with incorrect conceptual knowledge of mathematics and physics. The self-explanation learning approach called collective argumentation helps k-12 students to understand their misconceptions of mathematical principles that often appear abstract to them. This study investigated collective argumentation as an instructional approach that helps engineering students identify and correct their misconceptions of topics taught in Statics. Results suggest that argumentation improves student performance as measured by grades earned on semester exams. Survey and focus group results suggest that students did not understand the argumentation process. Therefore, the students did not like using it as a learning approach.     

PSYCHOLOGICAL SKILLS PROFILES OF ATHLETES: THE EFFECTS OF FEEDBACK

In an interrupted time series design with switching replications, three groups of club golfers received feedback on their psychological and psychomotor skills and level of involvement in golf as measured by the scales of the Golf Performance Survey. Repeated measures on these skills and performance levels in competition were obtained in the weeks before and after the feedback sessions to evaluate both short and long term effects. Multivariate analyses of the data revealed some improvement in the psychological and psychomotor skills of the participants, but no significant effects on performance. Although the profiling of strengths and weaknesses is often regarded as an important component of performance enhancement interventions, the results of this study suggest that subsequent training in those skills is necessary if the interventions are to be effective with athletes.