Comparison of two methodological approaches for the mechanical analysis of single-joint isoinertial movement using a customised isokinetic dynamometer*

Compared to isokinetic and isometric tests, isoinertial movements have been poorly used to assess single-joint performance. Two calculation procedures were developed to estimate mechanical performance during single-joint isoinertial movements performed on a customised isokinetic dynamometer. The results were also compared to appreciate the effects of measurement systems and calculation procedures. Five participants performed maximal knee extensions at four levels of resistance (30, 50, 70 and 90% of the one-repetition maximum, 1-RM). Joint angular velocity and torque were assessed from customised isokinetic dynamometer measures (method A) and from weight stack kinematic (method B). Bland–Altman plots and mean percent differences (M_diff) were used to assess the level of agreement for mean and peak angular velocity and torque. A Passing–Bablok regression was performed to compare the angular velocity-angle and torque-angle relationships computed from the two analysis methods. The results showed a high level of agreement for all mechanical parameters (M_diff < 6% for all parameters). No statistically significant differences were observed between methods A and B in terms of angular velocity-angle and torque-angle relationships except at 30% of 1-RM for the torque-angle relationship. Both methodologies provide comparable values of angular velocity and torque, offering alternative approaches to assess neuromuscular function from single-joint isoinertial movements.     

Examining social studies teachers’ resistances towards teaching Aboriginal perspectives: the case of Alberta

From 2005–2010 the province of Alberta introduced a social studies program of study mandating that all K–12 teachers use the lens of First Nations, Metis, and Inuit perspectives to help students understand the past as well as key concepts and contemporary issues. This paper offers a systematic examination of a range of data sources, including government reports, surveys, and peer-reviewed journal articles, which have documented teachers’ responses to this curricular mandate. Our analysis revealed a typology of resistances towards this curricular directive that have remained constant over a nearly twenty-year period. Guided by insights from sociocultural theory and the work of Indigenous scholars (e.g.; Marker, 2011), we trace the origins and limitations of these resistances.     

Peer Assessment Training in Teacher Education: Effects on performance and perceptions

The implementation of peer assessment receives much attention in teacher education. This paper reports the effects of peer assessment training on the performance of student teachers. Ninety-three student teachers were randomly assigned to control groups and experimental groups. The experimental groups were trained in defining performance criteria, giving feedback and writing assessment reports. This was done through peer assessment tasks that were embedded in a redesigned course. Analyses of data derived from peer assessment reports written by the students showed that the experimental groups surpassed the control groups in the quality of the assessment skill. As a result of the training, students from the experimental groups also scored significantly higher grades for the end products of the course than students from the control groups. The results of the questionnaire showed that all students were significantly more satisfied with the redesigned course.     

Reshaping the Nordic education model in an era of efficiency. Changes in the comprehensive school project in Denmark,Norway, and Sweden since the millennium

The Nordic Education Model was an important part of the social democratic welfare state for many years in the second half of the 20th century. Since the millennium, transnational agencies have drawn education from the realm of politics into a global market place by advocating strategies such as efficiency, competition, decentralisation, governing by detailed objectives, control, privatisation, and profile schools. This article gives brief accounts of major trends in current school development policies, discourses, and practices in Denmark, Norway, and Sweden since the millennium, and explores how the values of the Nordic model are affected by the new policies. It is argued that the Nordic model still exists as the predominant system for the large majority of Scandinavian children at a national level, but that a number of new technologies aiming to increase the efficiency of teaching and learning are gradually undermining the main values of the Nordic model.     

Gemeinsamer Unterricht Behinderter und Nichtbehinderter

Seit über 25 Jahren gibt es in deutschen allgemeinbildenden Schulen den gemeinsamen Unterricht von behinderten und nichtbehinderten Kindern. Diese Praxis unterscheidet sich von der „normalen“ Einbeziehung leistungsschwacher oder k?rperlich beeintr?chtigter Kinder, die es früher schon gab, dadurch, dass Sonderschullehrer mit Grundschullehrkr?ften oder Fachlehrern der Sekundarstufe I gemeinsam unterrichten. Innerhalb der Sonder-wie der allgemeinen Schulp?dagogik wird diese Entwicklung im Begriff der „Integrationsp?dagogik“ (Eberwein 1988), im neueren internationalen Sprachgebrauch im Begriff der „Inclusive Education“ (Hausotter 2000) zusammengefasst. Der gemeinsame Unterricht von Kindern mit und ohne Behinderungen und die damit verbundene neue Zusammenarbeit zwischen Lehrern unterschiedlicher Ausbildung und Orientierung hat Folgen für die Lehrerrollen, für das Lernen und die Sozialbeziehungen der Kinder mit und ohne Behinderungen, für die Organisation des Lernens und nicht zuletzt für Sonder-wie Schulp?dagogik. Die Frage ist, ob die integrative P?dagogik L?sungen für eines der zentralen schulp?dagogischen Probleme anbietet: Wie k?nnen unter den Bedingungen von Heterogenit?t in den kognitiven, sozialen, ethnischen und physischen Voraussetzungen innerhalb der Klassen soziales und fachliches Lernen wirksam miteinander verbunden werden, so dass alle Kinder davon profitieren? — Diese Frage schl?gt sich auch in einer Reihe sonder-und schulp?dagogischer Ver?ffentlichungen der letzten Jahre nieder, etwa in „Gemeinsamkeit und Vielfalt“ (Demmer-dieckmann/Struck 2001), „Heterogenit?t in der Schule“ (Hinz 1993), „Gleichheit und Differenz“ (Lenzen/Tillmann 1996), „P?dagogik der Vielfalt“ (Prengel 1993) oder „Grundschule — Schule der Vielfalt und Gemeinsamkeit“ (Schmitt 2001). Fast durchweg wird dabei Integrationsp?dagogik mit den Differenz-und Heterogenit?tsdiskursen der interkulturellen und Genderbezogenen P?dagogik verbunden. Der gemeinsame Diskurs wird seit Anfang der neunziger Jahre intensiv geführt (Lersch/Vernooij 1992). K?nnte Integration Schul-wie Sonderp?dagogik in eine integrierte P?dagogik für alle Kinder — einschlie?lich aller Kinder mit Erschwernissen — zusammenführen?     

The translucent cadaver: An evaluation of the use of full body digital x-ray images and drawings in surface anatomy education

It has been noted by staff at the Faculty of Health Sciences, Stellenbosch University that medical students neglect the study of surface anatomy during dissection. This study reports on the novel use of Lodox® Statscan® images in anatomical education, particularly the teaching of surface anatomy. Full body digital X‐ray images (Lodox Statscan) of each cadaver (n = 40) were provided to second year medical students. During dissection students were asked to visualize landmarks, organs, and structures on the digital X‐ray and their cadaver, as well as palpate these landmarks and structures on themselves, their colleagues, and the cadaver. To stimulate student engagement with surface anatomy, dissection groups were required to draw both the normal and actual position of organs on a laminated image provided. The accuracy of the drawings was subsequently assessed and students were further assessed by means of practical identification tests. In addition, students were asked to complete an anonymous questionnaire. A response rate of 79% was obtained for the student questionnaire. From the questionnaire it was gathered that students found the digital X‐ray images beneficial for viewing most systems' organs, except for the pelvic organs. Although it appears that students still struggle with the study of surface anatomy, most students believed that the digital X‐rays were beneficial to their studies and supported their continued use in the future. Anat Sci Educ. © 2012 American Association of Anatomists.     

The differential effects of task complexity on domain-specific and peer assessment skills

In this study the relationship between domain-specific skills and peer assessment skills as a function of task complexity is investigated. We hypothesised that peer assessment skills were superposed on domain-specific skills and will therefore suffer more when higher cognitive load is induced by increased task complexity. In a mixed factorial design with the between-subjects factor task complexity (simple, n?=?51; complex, n?=?59) and within-subjects factor task type (domain-specific, peer assessment), secondary school students studied four integrated study tasks, requiring them to learn a domain-specific skill (i.e. identifying the six steps of scientific research) and to learn how to assess a fictitious peer performing the same skill. Additionally, the students performed two domain-specific test tasks and two peer assessment test tasks. The interaction effect found on test performance supports our hypothesis. Implications for the teaching and learning of peer assessment skills are discussed.     

Family counseling in the Netherlands for Turkish-origin parents of deaf children with a cochlear implant

Cultural elements such as language, beliefs about health, and family context play important roles in the uptake of rehabilitation and treatment of deafness. Because of cultural issues, minority groups often do not receive optimal care. Focusing on the Netherlands, the researchers explored how the rehabilitation and counseling of deaf children of Turkish-origin parents can be improved. The most important findings were that (a) most parents initially did not believe their child was deaf and regretted later that they did not start hearing rehabilitation earlier; (b) parents had little confidence in the Dutch health care system and sought a second opinion from a medical doctor of their own national origin; (c) parents did not know how to be actively involved in the care of their deaf child. Implications for practice aimed at improving rehabilitation and counseling for these children are described.     

Number magnitude processing and basic cognitive functions in children with mathematical learning disabilities

The study sought out to extend our knowledge regarding the origin of mathematical learning disabilities (MLD) in children by testing different hypotheses in the same samples of children. Different aspects of cognitive functions and number processing were assessed in fifth- and sixth-graders (11–13 years old) with MLD and compared to controls. The MLD group displayed weaknesses with most aspects of number processing (e.g., subitizing, symbolic number comparison, number-line estimation) and two cognitive functions (e.g., visual–spatial working memory). These findings favor the defective approximate number system (ANS) hypothesis, but do not fit well with the access deficit hypothesis. Support is also provided for the defective object-tracking system (OTS) hypothesis, the domain general cognitive deficit hypothesis and to some extent the defective numerosity-coding hypothesis. The study suggests that MLD might be caused by multiple deficits and not a single core deficit.