The effects of morphological structure on reading proficiency—A developmental study

The present report with three inter-related studies examined the effects of morphological complexity on reading proficiency in 103 fourth graders, 88 fifth graders and 107 sixth graders trichotomized into below average, average and above average readers. The reaction time paradigm and the developmental framework with three age groups provided more sensitive and stable results for inferring mental processes in accessing the lexicon. Study 1 on lexical decision with visually presented words and non-words with different morphemic boundaries suggests that words can be accessed in a decomposed state as morphemes by children. Study 2 and the complementary Study 3 requiring the vocalization of derived or base forms of words primed by target items in sentence frames indicate that words might be accessed in full forms. Further, the depth of derivational morphology and of base morphology with correlated phonological changes affect reading proficiency.     

The use of microcomputer technology in a modular approach to reading and reading difficulties

This paper outlines the theoretical framework of a two-year two cohort study of inter-related modules to model reading in 300 grades 4, 5 and 6 readers, and describes the specially designed microcomputer programs written in Turbo Pascal to implement this modular approach. In brief, the modular approach postulates the interrelated phonological, morphological modules in processing words and sentence/paragraph processing. These three modules or components are subserved by 10 measurable tasks all implemented on the microcomputer (IBM-PC compatible) with reaction time measures as indices of the different facets of verbal efficiency. Statistical analyses of the large data sets for Phase 1 show the linear structural equation modelling fits the data reasonably well. In particular, the morphology task consistently explains between 32% to 44% of the variance in reading performance in the three grades. The findings lend themselves to specific approaches to habilitation in the different components or sub-components.This study was supported by a grant (No. 410-86-0048) from the Social Sciences and Humanities Research Council of Canada awarded to Che Kan Leong. Simon Lock and Jacky Lau were responsible for the microcompurter programming. Edward Danskin, Melvin Kelley, Donald Simmons, Louise Sellinger, Kristin Strauss and Tara Wiley carried out the experimentation with individual children in the schools. The cooperation of the principals, the teachers and the subjects was greatly appreciated. Requests for reprints should be addressed to Dr. C. K. Leong, Department for the Education of Exceptional children, University of Saskatchewan, Saskatoon, Canada, S7N OWO.     

The Future School Manager: Information and Communication Technology Aspects

This article argues that the competence demands of the future school manager in a decentralized system of local management of schools contain a variety of features that imply proficiency of the manager in use of ICT. The proficiency is not one of technical mastery only, but of communication habits, information processing and networking. The areas in which the use of ICT can be assumed to be prominent are, among others, the field of socio-cultural communication, the promotion of shared values, the continuous development of leadership and systems management - including the political system in which the local manager works, and the technical systems of administration and economy. The local manager in the decentralized system will necessarily depend on the use and mastery of ICT to be able to maintain an enlightened and efficient leadership, as well as an effective administration designed to raise the standards of education.

Le manager dans l'eacute;cole de l'avenir: aspects technologiques de l'information et de la communication

Cet article traite des exigences de compétence pour un manager de l'école de l'avenir dans un système décentralisé de gestion locale des écoles et contient une variété d'aspects qui impliquent une grande compétence dans l'utilisation des ICT. Cette compétence est non seulement une maîtrise technique mais des habitudes de communication, de traitement de l'information et de la mise en réseau. Les domaines dans lesquels on assume que l'emploi des ICT est essentiel sont fourni d'autres le champ de la communication socio-culturelle, la formation des valeurs partagés, le développement continu du leadership et la gestion des systèmes y compris le système politique dans lequel le manager travaille et les systèmes techniques de gestion et d'économie. Le manager local dans un système décentralisé dépendra nécessairement de l'utilisation et de a maîtrise des ICT pour être capable de maintenir un leadership éclaire et efficace aussi bien qu'une gestion efficiente ayant été concue pour élever les standards de l'éducation.

Die zukünftigen Schulmanager: Informations- und kommunikationstechnologische Aspekte

Dieser Beitrag belegt, daß zu den Kompetenzerfordernissen zukünftiger Schulmanager in einem dezentralisierten System lokal operierender Schulleitungen eine Reihe von Anforderungen gute Leistungen der Manager in der Nutzung der IKT gehören. Diese Fertigkeiten umfassen nun nicht nur die technische Beherrschung, Kenntnis von Kommunikationsgewohnheiten, Informationsverarbeitung oder Netzwerktechnologien. Neben diesen Bereichen sind es u.a. die sozio-kulturelle Kommunikation, die Förderung gemeinsamer Werte, die Weiterentwicklung von Führung und Systemmanagement -einschließlich des politischen Systems, in dem der lokale Manager selbst arbeitet, sowie die technischen Einrichtungen zur Verwaltung und von Wirtschaftlichkeit. Die örtlichen Manager in dezentralisierten Systemen werden notwendigerweise von der Nutzung und Beherrschung der IKT abhängig sein, um erfolgreiche Leitung und Verwaltung - auch bezüglich der Weiterentwicklung pädagogischer Standards - sicherzustellen.     

Optoelectrofluidic field separation based on light-intensity gradients

Optoelectrofluidic field separation (OEFS) of particles under light -intensity gradient (LIG) is reported, where the LIG illumination on the photoconductive layer converts the short-ranged dielectrophoresis (DEP) force to the long-ranged one. The long-ranged DEP force can compete with the hydrodynamic force by alternating current electro-osmosis (ACEO) over the entire illumination area for realizing effective field separation of particles. In the OEFS system, the codirectional illumination and observation induce the levitation effect, compensating the attenuation of the DEP force under LIG illumination by slightly floating particles from the surface. Results of the field separation and concentration of diverse particle pairs (0.82–16 μm) are well demonstrated, and conditions determining the critical radius and effective particle manipulation are discussed. The OEFS with codirectional LIG strategy could be a promising particle manipulation method in many applications where a rapid manipulation of biological cells and particles over the entire working area are of interest.     

Fast and reliable droplet transport on single-plate electrowetting on dielectrics using nonfloating switching method

In a droplet transport based on electrowetting on dielectrics, the parallel-plate configuration is more popular than the single-plate one because the droplet transport becomes increasingly difficult without cover plate. In spite of the improved transport performance, the parallel-plate configuration often limits the access to the peripheral components, requesting the removal of the cover plate, the single-plate configuration. We investigated the fundamental features of droplet transport for the single-plate configuration. We compared the performance of several switching methods with respect to maximum speed of successive transport without failure and suggested nonfloating switching method which is inherently free from the charge-residue problem and exerts greater force on a droplet than conventional switching methods. A simple theory is provided to understand the different results for the switching methods.     

Developmental dyslexia revisited and projected

There are three parts to this paper. First, I review briefly the signposts from research, theory, and application in developmental dyslexia in the 1960s and the 1970s that have led us from there to here, and show the pitfalls to avoid. Second, I discuss some of the pertinent issues of the 1980s: the role of intelligence in the diagnosis of children with specific reading disabilities, the distribution of reading difficulties and disabilities, and the important place of verbal efficiency. Third, I project to the 1990s to emphasize the challenge of the computer technology as mediated learning and the challenge of “bounded rationality” and “collective rationality” in education. Throughout this survey, the paramount role of knowledgeable and caring teachers is implicit. Portions of this paper were given at the British Dyslexia Association Conference on Dyslexia in Bath in 1989 and The Orton Dyslexia Society Annual Conference in Washington, D.C. in 1990. The writing of the paper was assisted in part by research grant No. 410-89-0128 from the Social Sciences and Humanities Research Council of Canada     

The circumplex model of the Questionnaire on Teacher Interaction among Hong Kong students: a multidimensional scaling solution

The Questionnaire on Teacher Interaction (QTI) is a teacher–student relationship measure whose underlying two-dimensional structure is represented in a circumplex model with eight sectors. Using Smallest Space Analysis (SSA), this study examined the circumplex structure of the Chinese version of the QTI among a convenience sample of 731 primary-school students in Hong Kong. The study revealed that the SSA solution fits the circumplex structure of the Model for Interpersonal Teacher Behavior and uncovered a two-dimensional solution yielding five sectors in a clockwise direction: Strict, Leadership-Helpful/Friendly-Understanding, Student Responsibility/Freedom, Uncertain, and Admonishing-Dissatisfied. While the Leadership-Helpful/Friendly-Understanding sector was the largest, the Student Responsibility/Freedom sector was the smallest, with few items constituting it. For the two dimensions, the vertical dimension was named Structure Clarity, with adherence to external structure (Strict sector) at one extreme and lack of structure (Uncertain sector and Student Responsibility/Freedom sector) at the other extreme. The horizontal axis was labelled Attitude Valence, with benevolent valence (Leadership sector, Helpful/Friendly sector and Understanding sector) at one end and malevolent valence (Admonishing sector and Dissatisfied sector) at the other end of the axis. The positioning of the five sectors in the present study is in line with the factor structure that was often found in previous research on the circumplex model. By presenting a somewhat different interpretation of the two dimensions and some additional items, we hope that future research will verify our suggestions across different sociocultural settings.     

Children’s concepts of language in learning to read

Conclusion To summarize, acceptance of reading as secondary to, and dependent on, the primary activities of speaking and listening does not mean that reading is simply speech in print, albeit reading is a language-based activity. Listening and speaking seem to proceed from the meaning of the discourse to analysis; whereas written language comprehension proceeds from analysis to meaning, at least for some beginning readers and some poor readers. Analysis of speech takes place at the unconscious or tacit level; conscious analysis of segments of print (sentences, phrases, words, syllables and phonemes) is often required in reading, especially at the initial stage. Good readers pass this decoding stage relatively effortlessly; poor readers may still need to deal with the mechanics of reading before these become automatic. Thus, while children should be introduced to reading through a variety of rich language experiences, there should be a parallel process of the development of subskills. This paper was presented at the 29th Annual Conference of The Orton Society in Minneapolis, November 1978.     

Turning Crisis into Opportunity: Nature of Science and Scientific Inquiry as Illustrated in the Scientific Research on Severe Acute Respiratory Syndrome

Interviews with key scientists who had conducted research on Severe Acute Respiratory Syndrome (SARS), together with analysis of media reports, documentaries and other literature published during and after the SARS epidemic, revealed many interesting aspects of the nature of science (NOS) and scientific inquiry in contemporary scientific research in the rapidly growing field of molecular biology. The story of SARS illustrates vividly some NOS features advocated in the school science curriculum, including the tentative nature of scientific knowledge, theory-laden observation and interpretation, multiplicity of approaches adopted in scientific inquiry, the inter-relationship between science and technology, and the nexus of science, politics, social and cultural practices. The story also provided some insights into a number of NOS features less emphasised in the school curriculum—for example, the need to combine and coordinate expertise in a number of scientific fields, the intense competition between research groups (suspended during the SARS crisis), the significance of affective issues relating to intellectual honesty and the courage to challenge authority, the pressure of funding issues on the conduct of research and the ‘peace of mind’ of researchers, These less emphasised elements provided empirical evidence that NOS knowledge, like scientific knowledge itself, changes over time. They reflected the need for teachers and curriculum planners to revisit and reconsider whether the features of NOS currently included in the school science curriculum are fully reflective of the practice of science in the 21st century. In this paper, we also report on how we made use of extracts from the news reports and documentaries on SARS, together with episodes from the scientists’ interviews, to develop a multimedia instructional package for explicitly teaching the prominent features of NOS and scientific inquiry identified in the SARS research.