Preferences for Explanation Generality Develop Early in Biology But Not Physics

One of the core functions of explanation is to support prediction and generalization. However, some explanations license a broader range of predictions than others. For instance, an explanation about biology could be presented as applying to a specific case (e.g., “this bear”) or more generally across “all animals.” The current study investigated how 5‐ to 7‐year‐olds (N = 36), 11‐ to 13‐year‐olds (N = 34), and adults (N = 79) evaluate explanations at varying levels of generality in biology and physics. Findings revealed that even the youngest children preferred general explanations in biology. However, only older children and adults preferred explanation generality in physics. Findings are discussed in light of differences in our intuitions about biological and physical principles.     

Unintended consequences on gender diversity of high-tech growth and labor market polarization

There has been considerable media coverage highlighting the lack of gender diversity in Silicon Valley, stressing the relatively low participation of women in the high-tech economy. Austin offers a unique case for testing whether similar gender issues characterized other high-tech regions because the city has historically benefited from the expansion of Silicon Valley’s large high-tech firms since the 1980s. The gender-biased business practices identified in Silicon Valley firms may have been transferred to their branch plants in Austin. Our analysis shows women’s losses in middle-skill occupation employment shares were concentrated in the low-tech industry and were partially offset by job share gains in high-skill occupations in the same sector between 1980 and 2015. Men’s losses in middle-skill occupation job share were also mainly concentrated in the low-tech sector but were partially offset by employment share gains in high-skill occupations only in the high-tech industry during this period. Women made large gains in relative real median wages only in high-skill occupations in the high-tech industry while their relative real median wages in other skill occupations and in the low-tech industry stagnated around zero during this period. Men’s gains in relative median wages were also concentrated only in the high-tech industry but were less than half of women’s and were negative (between ?10 and ?21 percent) in other occupations in the high-tech industry and across all occupations in the low-tech industry. As noted in previous studies, the impact of job polarization is not well understood across sectors and gender. This study finds the high-tech industry in Austin has had unintended consequences in terms of job polarization across gender, providing relatively fewer job opportunities in high-skill occupations to women than men but offering much higher gains in relative real median wages to women than men. Males also found relatively more job opportunities in high-skill occupations in the high-tech industry than women but experienced only half of women’s gains in relative median wages in this industry between 1980 and 2015.     

Differences in novice and experienced teachers’ perceptions of planning activities in terms of primary instructional tasks

This study was aimed at investigating differences between novice and experienced teachers’ perceptions of planning activities for developing teacher education students’ professional skills by focusing on promoting of identified ill-developed skills. The teachers’ thinking about instructional planning was conceived as teachers’ decision-making for implementing primary teaching tasks in the planning, delivery, and reflective phases of instruction. This model served as a basis (or framework) for the identification of potential variables of planning skills and developing of items for a teachers’ questionnaire. Fifty-eight experienced and 55 novice teachers from Estonian schools of general education were surveyed. It was revealed that novice teachers did not apprehend events that may undermine reaching long-term instructional objectives and they focused more on the achievement of immediate objectives and the teaching of obligatory content in comparison with experienced teachers.     

Attentional focus effects on sprint start performance as a function of skill level

Abstract

Several researchers have demonstrated that an external focus of attention (about movement’s effects) during movement execution allowed better performances and learning of various motor tasks than an internal focus of attention (about movement itself). However, attentional focus effects have not been studied in tasks requiring explosive actions preceded by fast reaction time to a signal, such as a sprint start. We hypothesised that the beneficial effect of external focus of attention would be observed in the different stages of the sprint start (i.e. reaction time, block clearance and running) for both expert and novice sprinters. Novice and expert sprinters performed sprint starts followed by a 10 m sprint under three conditions: external focus instructions; internal focus instructions; and neutral instructions. The reaction time and the running time were significantly shorter in the external focus condition than in the internal focus condition, for both expert and novice participants. These results confirm the beneficial effect of an external focus of attention on the speed of movement execution. Moreover, they revealed that attentional focus influences movement preparation. Several hypotheses are proposed to account for these results, with reference to the processes that could be responsible for the observed effects.     

Picturing global educational inclusion? Looking and thinking across students’ photographs from the UK,Zambia and Indonesia

Over the last few years we have engaged children and young people in participatory photography projects in a diverse range of international contexts. The projects, diverse as they are, have been school-based and primarily focused on students' experiences of educational inclusion/exclusion. Photographs taken by students can stimulate conversations in which different perspectives are shared and considered. Whilst this process is meaningful within a local context, it is also compelling to reflect more widely on what children and young people's photographs and commentary (and through these their interpretations of their educational experiences) have to tell and, indeed, show us about educational inclusion globally. In this paper, we begin by explaining what we mean by the term 'educational inclusion', and consider what methodological relevance the participatory photography has for engaging in research with children and young people about their educational experiences. We then briefly describe the contexts of the projects this paper draws on, which took place in the UK, Zambia and Indonesia. In the main body of the paper, we will look across these international projects and consider a selection of students' photographs and interpretations in relation to several broad themes about educational inclusion which they suggest.     

Introducing the Microcomputer into English. II. An evaluation of WILT as a program using a problem-solving approach to learning spelling

Use of the spelling program WILT with a class of mixed-ability third-year secondary-level pupils as part of an evaluation study of programs for language development is reported. The behaviour and language activities characteristic of pupils using WILT are described and 14 categories of language activity identified. The results of an analysis of the language activities of four groups are presented, and the types of learning that are encouraged by WILT are identified. Differences between the pupils' and the class teacher's evaluations of WILT are examined, and the educational value of the program assessed.     

‘Sitting alone in the staffroom contemplating my future’: communities of practice,legitimate peripheral participation and student teachers’ experiences of problematic school placements as guests

A recent Review of Teacher Education in Scotland reports that 23% of respondents (n = 2381) encountered variable or very poor school placement experiences. This paper uses Lave and Wenger’s ideas concerning Communities of Practice (1998) and Legitimate Peripheral Participation (1991) as analytical tools with which to understand the nature and impact of student teachers’ problematic experiences of school placement. A total of 14 Professional Graduate Diploma in Education students on a one-year Secondary English course were followed through the practice elements of their Initial Teacher Education programme and data were constructed from learning logs and semi-structured interviews. Analysis provided a nuanced account of the student teachers’ difficulties in attaining member status as Legitimate Peripheral Participants in communities of practising teachers, with the concepts ‘joint enterprise’, ‘mutual engagement’ and ‘shared repertoire’ being found to be useful in explaining these difficulties. Limitations in the theoretical framework were also discovered and these are highlighted and developed in the paper.     

Teacher attributions for children's attention‐deficit/hyperactivity disorder behaviors predict experiences with children and with classroom behavioral management in a summer program practicum

Elementary school teachers often implement classroom behavioral management systems to address student misbehavior. Common problems targeted by these systems are the inattentive, hyperactive, and impulsive behaviors characteristic of attention‐deficit/hyperactivity disorder (ADHD). This study examined teachers' attributions for why children display ADHD behaviors, and how such attributions affect their experiences with children in the context of interventions to manage these behaviors. Participants were 32 preservice teachers undertaking a practicum in a summer program for 137 children (Grades 1–3), some of whom had ADHD. Teachers were trained to implement classroom‐wide behavioral management. Teachers' attributions for children's ADHD behaviors were assessed using a vignette measure, before teachers had met their students or begun training on intervention techniques. When controlling for attributions regarding oppositional behavior, teachers' initial attributions for ADHD behaviors as less internal/controllable predicted children reporting more positive relationships with that teacher during the summer program. Teachers' initial attributions for ADHD behaviors as less stable predicted teachers' greater satisfaction with the intervention techniques during the summer program and their greater attunement to children's social networks. Cognitions about the causes of children's ADHD behaviors held by preservice teachers may relate to their subsequent experiences with children in the context of implementing classroom behavioral management.     

Towards culturally inclusive global engineering?

Engineering is now, more than ever before, a global profession. The context in which engineering design problems must be framed is increasingly a global one, and global sustainability needs to be taken up as an important design criterion. Engineers are finding employment in multinational companies in greater numbers, and their work takes them to every corner of the world. But engineering is still far from culturally inclusive. There has been a worrying tendency for the global reach and impact of engineering to be based essentially on North American or European perspectives. I argue that we need to reclaim the term globalization as implying the celebration of rich diversity, not as a recipe for an essentially neo-colonial domination by a perspective drawn from one or two regions, however powerful they may be. The extent to which multicultural as well as international issues should be taken into account in engineering practice raises questions about the extent to which cultural issues permeate the whole of engineering education. However, it is far from clear that developments in higher education in general are necessarily supportive of a variety of perspectives. Indeed, a group of forces and ideas promoting a two-tier global market for education seems to be increasingly influential in national and international discussions. Traditional universities, even as they extend their international reach, may increasingly be maintained only for élite groups, while a bargain basement type of training emerges for the masses at the local level. I offer some reasons why this arrangement would be both socially disastrous and professionally damaging to engineers. Australians may be able to offer a useful contribution to the development of a broader perspective on engineering. The engineering context in which our students and academics work has allowed us, in a range of innovative approaches, to experience and give voice to cultural diversity. This variety includes some approaches that my own university has adopted in order to incorporate international issues and awareness in our programmes. I offer some ideas about how we should be preparing engineering students to think through global issues so that, as individuals, they are culturally sensitive and inclusive and can take justifiable pride in their profession's international role.