The Reliability of the [Vdot]O2-HR Relation during Graded Treadmill Exercise in Prepubertal Boys and Adult Men

Abstract

When subjects make simultaneous aiming movements of the upper limbs over different distances, assimilation effects are shown; the shorter distance limb overshoots when paired with a longer distance limb. However, it is not known whether assimilation effects are due to variations in distance per se or to variations in target location. To separate the possible influences of distance and location, 60 subjects made rapid bimanual aiming movements in one of four conditions. The two different-distance groups made a 20° movement in the left hand and a 60° movement in the right hand to either the same or different target locations. The comparison groups moved 20° in each limb. Somewhat surprisingly, spatial assimilations were greater when moving different distances to the same, rather than different, target locations, which suggests interlimb differences in distance mediate assimilation effects rather than target location. Temporal assimilations were greater when distance and location were varied, but the assimilations were not related to interlimb differences in velocity, as predicted by Marteniuk and MacKenzie (1980).     

Elementary Teachers' Classroom Practices and Beliefs in Relation to US Science Education Reform: Reflections from within

This study unveils the stories of 3 public school elementary teachers from the USA who reflected on their beliefs about science education reform, and implementation of the reform in their classroom teaching, in response to state recommendations for change in science education. The teachers' stories show how various factors assisted or impeded the implementations of reform in their teaching, the various challenges related to their grade-level teaching, and the teachers' personal struggles to make sense of reform recommendations. Within each case study, we describe 4 common themes from the teachers' interviews. These themes are related to teachers' science teaching strategies, their science teaching efficacy beliefs about adopting reform, the types of science learning outcomes teachers target, and the types of teaching resources available to them. Implications for teacher education and practice are discussed in relationship with study findings.     

Romancing the market: narrativising equity in globalising times

Despite the ongoing production of statistics about inequities in education, national policy agendas seem incapable of getting traction on the everyday realities of the schooling which re/produces them. This paper is a think-piece which uses narrative analysis to explore some of the meaning-making processes that are implicated in this stalemate. Mobilising Lyotard's notion of a performative master narrative, that of the globalised economy with its attendant trope of the market, equity policy is conceived as a parallel story of distribution of knowledge-as-a-thing, where outcomes are privileged over purposes and processes, and learning is assumed to proceed in the same way for all. The ways in which this equity story supports the master narrative – through the display of test results for example – are signposted, and illustrations are presented to show how blame and sequestration are used as rhetorical strategies to silence equity critics. This kind of deconstructive critique of course has its limitations: debate about norms and ideals, as well as persuasive counter-narratives and exemplars are also needed in order for political action to be undertaken.     

The international student experience: three styles of adaptation

The subjective well-being of a sample of 979 international students attending a large metropolitan university in Melbourne, Australia, was investigated. A person-focussed approach was used to determine whether different ways of adapting, based on patterns of well-being, could be discerned. Cluster analysis of responses on 21 measures identified three different patterns: positive and connected (58.8% of students), unconnected and stressed (34.4%), and distressed and risk-taking (6.7%). Tests of the concurrent validity of the typology were significant. Demographic factors were not particularly helpful in distinguishing among the three patterns of well-being. The results provide universities with knowledge pertinent to provision of appropriate international student support.