Acute kinematics changes in marathon runners using different footwear

The effects of running with or without shoes on injury prevention have been extensively studied, and several investigations have assessed biomechanical differences between them. However, findings are not consensual and further insights on biomechanical load associated with differently shod or barefoot conditions may be needed. This study aimed to observe if habitually shod marathon runners show acute alterations when running barefoot or with minimalist shoes, and to determine whether the running kinematical adaptations of wearing minimalist shoes were similar to barefoot running. Twelve male marathon runners ran on the treadmill at their average marathon pace in different footwear conditions: habitual running shoes, minimalist shoes, and barefoot. High-resolution infrared cameras and visual 3D software were used to assess kinematic data. The following parameters were studied: foot strike angle, cycle time, stance time, normalized stride length, hip, knee, and ankle angular position at initial contact, and their respective range-of-motion (ROM) during stance phase. Contrary to the expectations, it was found that highly trained habitually shod elite marathon runners changed their lower limb kinematic pattern both when running barefoot or wearing minimalist shoes. Minimalist shoes showed a trend towards intermediate biomechanical effects between running with and without shoes.     

Does Temperament Moderate the Relation between Preschool Parenting and School-Age Self-Regulation? Contrasting Diathesis-Stress and Differential Susceptibility Models

Objective. Children vary in how sensitive they are to environmental influences. Child temperament is an individual difference factor that appears to moderate the impact of environment on early child development. This study contrasts the “diathesis-stress/dual risk” and “differential susceptibility” models in examining difficult temperament as a moderator of the relation between preschool parenting and school-aged child persistence. Design. A longitudinal design included 61 typically developing Portuguese children (31 girls) assessed when they were toddlers (Time 1 at 1–3 years), preschoolers (Time 2 at 4–6 years), and school aged (Time 3 at 8–10 years). At Time 1, parents were recruited and interviewed. At Time 2, semi-structured mother–child interactions were observed, and preschool teachers rated children’s temperament. At Time 3, children’s task persistence was rated by their elementary teachers. Results. Difficult temperament moderated the association between mother–child interactions and child persistence, with stronger associations for children with more difficult temperaments. Conclusions. Consistent with the diathesis-stress model, results reveal that high levels of positive parenting reduce the risk of low self-regulation associated with difficult temperament.     

‘Very Correct Adversaries’: The Cold War on Ice from 1947 to the Squaw Valley Olympics

This article considers international ice hockey from 1947 through the Squaw Valley Olympics in 1960. International hockey in these years dramatised important Cold War issues and offered useful insight into interaction among Americans, Canadians, Russians and Czechoslovaks. National programmes and styles of play reflected their nation states; hockey served simultaneously as both cultural diplomacy and psychological warfare. Czechoslovakia's powerhouse programme was purged for political reasons, while Prague officials tried to use Soviet hockey success to claim legitimacy for communism. The Soviets' communist-influenced ‘collective hockey’ achieved stunning success: the USSR national team started playing only in 1947 but was competitive with the world's best amateurs by 1954. Rules governing ‘amateurism’ were susceptible to manipulation, especially by communist regimes, further aiding Soviet progress. Canada remained the strongest power, but many of its best players were openly professional, hindering its efforts to stay on top. In 1948, US hockey demonstrated the messiness of an open society when two teams arrived in St Moritz claiming to represent the USA. After that, though, American players compiled a record in 1952, 1956 and 1960 that showed that the USA – not Canada, not the USSR – was the strongest nation in Olympic hockey.     

Diversification around Europe – performance measuring with regard to different missions

Existing university ranking systems blur differences between Higher Education Institutions because they only focus on research. The increased breadth, diversity and complexity of Higher Education Institutions’ missions are repeatedly overlooked causing a low visibility to a wide audience. This paper demonstrates the possibilities to measure other missions such as international orientation and regional engagement. Therefore, the results of 618 Higher Education Institutions (Effective March 2016) in U-Multirank, an international university ranking, are used. The results show the impressive variety in the higher education systems among European regions. Every region found missions in which they effectively perform thus proving the importance of each mission. The multidimensional ranking takes into account the complexity of Higher Education Institutions’ missions and capturing the relevance of Higher Education Institutions third mission’s activities adequately. Transparency across all missions is the only possibility to make the performances honourable. As research is not the only remarkable mission of Higher Education Institutions, teaching is not the only necessary mission. When other missions are overlooked, the performance measurement systems hinder mission diversity in higher education.

     

The role of habituation of the response to LiCl in the US-preexposure effect

In two experiments, rats received preexposure consisting of six intraperitoneal injections of lithium chloride (LiCl). This treatment reduced the magnitude of the unconditioned response (UR; suppressed consumption of a novel flavor) evoked by an additional injection (Experiment 1) or by oral consumption (Experiment 2) of LiCl. In both experiments, preexposure also attenuated the acquisition of a conditioned aversion with an LiCl injection as the unconditioned stimulus (US) but had no effect on the aversion produced when the US was oral consumption of LiCl (Experiment 2). These results are consistent with the view that the reduced ability of the preexposed US to serve as a reinforcer depends on blocking by injection-related cues and is independent of habituation of the UR recorded in the present study. Possible interpretations of this dissociation are discussed.     

Does Self-directedness in Learning and Careers Predict the Employability of Low-Qualified Employees?

Employability has become a key element in sustaining successful vocational careers. The role of self-directedness is considered paramount in maintaining one’s employability. However, it also requires certain competences on part of employees to invest in learning and career development. This study examines the influence of self-directedness in learning and career of low-qualified employees on their employability. In a follow-up study of 284 low-qualified employees, we find that higher levels of self-directedness in learning and career of employees corresponds with higher chance to be promoted to higher-level job positions (vertical job mobility). However, no relationship was found between different formats of self-directedness and job retention or horizontal job mobility of lower qualified personnel.     

Learning (not) to become a teacher: A qualitative analysis of the job entrance issue

Reporting on 12 case studies of student teachers, this paper examines how experiences during teacher education affect graduates’ decision on job entrance. Interpretative data-analysis reveals that powerful sources of the shift in motivation to enter teaching concern interactions in which the person of the teacher is at stake. These mainly involve student teachers’ need to develop a socially recognized sense of professional competence as well as their dealing with social and cultural working conditions in schools. These crucial determinants act as “double-edged swords”, being at the same time important sources for recognition as for self-doubts and loss of job motivation.     

Metaphorical understandings and scientific ideas

This study looks at the ideas which children have of the particulate model of matter, at the time they start formal science in school. Pupils aged about eleven in three European countries‐‐Greece, Portugal and the UK‐‐were studied using word association tests. In the UK and Portugal the children had received no teaching of the particulate model; in Greece the pupils had received one year of introductory science, containing some teaching of the particulate model. Key words associated with the particulate model were investigated as free associations. In Portugal and the UK there was little or no evidence of particulate ideas in the pupils’ responses. In the Greek data particulate ideas were more in evidence. There were other clear differences in the data from the three countries. Educational and research implications of the findings are discussed.     

Diagnosing Portuguese Students' Misconceptions about the Mineral Concept

Educational researchers and teachers are well aware that misconceptions—erroneous ideas that differ from the scientifically accepted ones—are very common amongst students. Daily experiences, creative and perceptive thinking and science textbooks give rise to students' misconceptions which lead them to draw erroneous conclusions that become strongly attached to their views and somehow affect subsequent learning. The main scope of this study was to understand what students consider a mineral to be and why. Therefore, the goals were (1) to identify eleventh-grade students' misconceptions about the mineral concept; (2) to understand which variables (gender, parents' education level and attitude towards science) influenced students' conceptions; and (3) to create teaching tools for the prevention of misconceptions. In order to achieve these goals, a diagnostic instrument (DI), constituted of a two-tier diagnostic test and a Science Attitude Questionnaire, was developed to be used with a sample of 89 twelfth-grade students from five schools located in central Portugal. As far as we know, this is the first DI developed for the analysis of misconceptions about the mineral concept. Data analysis allows us to conclude that students had serious difficulties in understanding the mineral concept, having easily formed misconceptions. The variables gender and parents' education level influence certain students' conceptions. This study provides a valuable basis for reflection on teaching and learning strategies, especially on this particular theme.     

Tne Opportunity of tne Family in tne Development of Democracy

The author of this paper has just graduated from one of our great American seminaries. He seriously questions whether the education he received there has given him the best preparation for his future work in the ministry.

His question is so pertinent that it calls for further exploration. The Editor has invited comment from a seminary graduate of one year standing, from a graduate of fifteen years standing, and from the heads of two seminaries which are particularly interested in preparing men for the ministry. Their comments follow immediately after the article.

In the nature of the case, the author and the seminary would better remain anonymous.