Changes in joint kinetics during learning the longswing on high bar

Biomechanics helps us understand the association between technique changes and performance improvement during learning. The aim of this research was to investigate joint kinetic characteristics of technique during learning of the longswing on the high bar. Twelve male, novice participants took part in the learning study. During swing attempts in 8 weekly testing sessions, kinematic data were collected. Inverse dynamics analysis was performed from known zero forces at the toes to quantify joint moments and power at the hips and shoulders. Key biomechanical constraints that limited performance outcome were identified based on changes in joint kinetics during learning. These constraints were the ability to perform a large shoulder power and to overcome passive kinetics acting during the downswing. Constraints to action at the level of joint kinetics differentially challenge learners and therefore could underpin more individual, specific learning interventions. Functional phases, defined by maximum hyperextension to flexion of the hips and maximum flexion to extension of the shoulders, did not describe the key joint kinetics of the hip and shoulder for novices. The functional phases may serve however to identify novices that were unable to overcome the passive kinetic constraint.     

Biomechanical energetic analysis of technique during learning the longswing on the high bar

Biomechanical energetic analysis of technique can be performed to identify limits or constraints to performance outcome at the level of joint work, and to assess the mechanical efficiency of techniques. The aim of this study was to investigate the biomechanical energetic processes during learning the longswing on the high bar. Twelve male, novice participants took part in a training study. Kinematic and kinetics data were collected during swing attempts in eight weekly testing sessions. Inverse dynamics analysis was performed from known zero forces at the toes. Joint work, total energy, and bar energy were calculated. Biomechanical constraints to action, that is, limits to novice performance, were identified as “total work” and “shoulder work”. The most biomechanically efficient technique was associated with an onset of the hip functional phase and joint work that occurred between 10–45° before the bottom of the swing. The learning of gross motor skills is realised through the establishment of a set of techniques with task specific biomechanical constraints. Knowledge of the biomechanical constraints to action associated with more effective and efficient techniques will be useful for both assessing learning and establishing effective learning interventions.     

Teaching for Wisdom in an Intergenerational High-School-English Class

Although the psychological benefits of intergenerational learning environments have been well documented, no study has yet investigated wisdom as an outcome of intergenerational classroom engagement. In this study, Elders between the age 60–89 were recruited to participate in a high-school English classroom. We hypothesized that participating in an intergenerational high-school classroom would benefit both Elders and Students by fostering the conditions for both groups to develop greater psychological wisdom. Our findings indicate that both Elders and Students actively engaged the five dimensions of wisdom identified by Webster (2003 Webster, J. D. (2003). An exploratory analysis of a self-assessed wisdom scale. Journal of Adult Development, 10(1), 13–22.[Crossref], [Web of Science ®] , [Google Scholar], 2007 Webster, J. D. (2007). Measuring the character strength of wisdom. The International Journal of Aging and Human Development, 65(2), 163–183.[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) during their time in the intergenerational class. Further, we find that while Students and Elders both demonstrated aspects of wisdom, they understood the concept of wisdom in strikingly different ways.     

The research and publication programs of Radio Free Europe/Radio Liberty, Inc.

In 1973, the Board for International Broadcasting assumed responsibility for the operation of the joint corporate entity, Radio Free Europe/Radio Liberty, Inc. Broadcasting news, entertainment, and public affairs programs to Eastern Europe and the Soviet Union since 1950 and 1953 respectively, RFE/RL, Inc. has also maintained the largest research and analysis activity on these countries in the Free World. This information has been made widely available through serial and monographic publications, notably in the two weeklies Radio Free Europe Research (Eastern Europe) and Radio Liberty Research Bulletin (Soviet Union). Contract and independent researchers make use of rich archival and current affairs library research facilities in New York and Munich. As Federal funding has been maintained and expanded in recent years, facilities and capabilities have been greatly extended.     

Developing cognitive‐social‐emotional competencies to enhance academic learning

This preliminary study examined intervention effects of a universal prevention program offered by classroom teachers to public elementary school students. The Unique Minds School Program (M.B. Stern, 1999) is a teacher‐led program designed to promote cognitive‐social‐emotional (CSE) skills, including student self‐efficacy, problem solving, social‐emotional competence, and a positive classroom climate, with the dual goal of preventing youth behavioral problems and promoting academic learning. During 2 consecutive school years, 119 students and their teachers were assessed in the fall and spring of Grade 4 and again in the spring of Grade 5. As compared to students in the comparison school, students in the intervention showed gains in student self‐efficacy, problem solving, social‐emotional competencies, and math grades. Incremental gains within CSE domains were found after 1 and 2 years of intervention. © 2005 Wiley Periodicals, Inc. Psychol Schs 42: 405–417, 2005.     

Planning and design of on-line systems for the ultimate user of biomedical information

Following a general discussion on the philosophy and design of information systems, with particular attention to the definition, needs and psychology of the ultimate user of systems providing on-line access to biomedical information, the role of the documentalist, the differences between document retrieval and true information retrieval and the operational characteristics of on-line systems which affect their cost and hence their design and acceptability, the authors make some tentative predictions as to the future demand for such information retrieval services and their probable organizational form. A brief report is then presented on the principal findings and conclusions of a user's study of the Excerpta Medica system, the key features and history of which are briefly described. Based on the conclusions of this study, particularly as regards the complexity of the average search question, the role of the search formulators in determining the results of computer searching, the importance of secondary concepts for retrieval and the optimal level of specificity of a computer thesaurus, some of the changes in the Excerpta Medica system which are in the planning stage and will be incorporated into the system's Mark II version are outlined, as are the principal features of the two systems currently offering on-line access to the Excerpta Medica database in Western Germany and the U.S.A. Finally, attention is given to the planned partial hierarchic structuring of the Excerpta Medica thesaurus (Malimet), a project which is to be based largely on frequency counts of the existing database and the elimination of over-specific terms by posting under broader concepts. The results of some of the initial steps in this direction (i.e. frequency counts of portions of the database and the structuring of some of the terms used in the cancer field) are presented by way of illustration.     

Assessing computer technology in the criminal justice classroom: A case study

Previous research examining computer-assisted teaching is inconclusive. Some studies find enhanced student performance while others find no difference from traditional-approach pedagogy. This case study compares student performance and course evaluations for computer-assisted and traditional-approach sections in three criminal justice courses: crime theory, criminal courts, and inequality in the justice system. Overall results indicate a significant difference between student performance in computer-assisted and traditional classes. Yet differences are not the same for each course. The theory course shows the least difference while the courts course had the greatest difference. Student evaluation data indicate computer-assisted activities are enjoyed, yet differences from traditional-approach sections are not significant. Questions for future research on the use of technology in teaching are raised.     

Schooling effects on intelligence development: evidence based on national samples from urban and rural China

The current research investigated the variability of school effects on intelligence development in considering two economically and socially distinct groups of children. The data came from a nationally representative sample of primary school children from urban and rural areas of China. Two standardised reasoning tests were used to assess fluid intelligence. The between-grade regression discontinuity approach was applied to disentangle the schooling effect from the age effect. Results showed that the combined effects of schooling and age were 5.09 intelligence points per year, in which the schooling effect (4.37 points) was larger than the age effect (.72 points). The patterns of schooling and age effects were different in urban and rural subsamples. For the urban subsample, the schooling effect was smaller than the age effect for children from grade 1 to 3, but the schooling effect became larger than the age effect from grade 4 to 6. For the rural subsample, however, the schooling effect was always larger than the age effect. The effect of one year of schooling for rural children (5.59 points) was larger than that for urban children (3.15 points). These results suggest that schooling effects are closely related to the context where children are growing up.     

Educational opportunities for adult disabled persons

Abstract

Educational opportunities for adult disabled persons are limited, despite the growing consensus on their importance. Unesco has assembled case studies of provision for disabled adults from eight countries. These are analysed here in terms of five aspects: disabled and non‐disabled adults studying together; facilitating the study situation; training for independent living; sociocultural and creative stimulation; and increasing public awareness of disability. Guidelines for future action are set out.