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221.
Why Hacking is Wrong about Human Kinds   总被引:2,自引:0,他引:2  
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222.
This study examined parent-child emotion discourse, children's independent social information processing, and social skills outcomes in 146 families of 8-year-olds with and without developmental delays. Children's emergent social-cognitive understanding (internal state understanding, perspective taking, and causal reasoning and problem solving) was coded in the context of parent-child conversations about emotion, and children were interviewed separately to assess social problem solving. Mothers, fathers, and teachers reported on children's social skills. The proposed strengths-based model partially accounted for social skills differences between typically developing children and children with delays. A multigroup analysis of the model linking emotion discourse to social skills through children's prosocial problem solving suggested that processes operated similarly for the two groups. Implications for ecologically focused prevention and intervention are discussed.  相似文献   
223.
Previous work has shown that mothers' employment is associated with increases in children's body mass index (BMI), a measure of weight for height. Nonstandard work (working evenings or nights, weekends, or an irregular shift) may also be associated with children's BMI. This article examines the association between maternal work and children's BMI and considers the influence of mothers' nonstandard work schedules. Using data from school-age children (approximately 8 to 12 years) in the NICHD's Study of Early Child Care and Youth Development (N = 990), this study found that an increase in the total time a mother is employed is associated with an increase in her child's BMI; additionally, the association between maternal employment and children's weight is much stronger at 6th grade relative to younger ages. There was no evidence that maternal or home characteristics or children's time use mediated these associations, nor was there any evidence that nonstandard work was associated with children's BMI. Implications for policy and future research are discussed.  相似文献   
224.
This research examines how youth in arts and leadership programs develop skills for organizing actions over time to achieve goals. Ethnically diverse youth (ages 13-21) in 11 high-quality urban and rural programs were interviewed as they carried out projects. Qualitative analyses of 712 interviews with 108 youth yielded preliminary grounded theory about youth's development of strategic thinking, defined as use of dynamic systems reasoning to anticipate real-word scenarios and plan work. Strategic thinking appeared to develop through youth's creative engagement with tactical challenges in the work and feedback from the work's outcomes. Program advisors supported this development by giving youth control and by providing nondirective assistance when needed.  相似文献   
225.
Preschool‐aged children are exposed to fantasy stories with the expectation that they will learn messages in those stories that are applied to real‐world situations. We examined children’s transfer from fantastical and real stories. Over the course of 2 studies, 3½‐ to 5½‐year‐old children were less likely to transfer problem solutions from stories about fantasy characters than stories about real people. A combined analysis of the participants in the 2 studies revealed that the factors predicting transfer differed for the fantasy and real stories. These findings are discussed within the context of their implications for preschoolers’ developing boundaries between fantasy and real worlds.  相似文献   
226.
In this study, I capitalize on a natural experiment to examine the effect of federal Pell Grant eligibility on college enrollment for students who graduated from high school in spring 2004 and who completed the Free Application for Federal Student Aid (FAFSA). Data from the Education Longitudinal Study of 2002 are used to array students on the continuous Expected Family Contribution (EFC) variable, attained from the FAFSA, and divide them into two categories—those with an EFC at or below the federally designated amount for Pell eligibility, and those above. This regression-discontinuity approach allows me to measure whether students who vary regarding their Pell Grant eligibility, but who have essentially identical family incomes, differ in their college enrollment rates. I find no effect. While confirming prior studies examining the impact of the Pell Grant on college enrollment for traditional students, this finding remains inconsistent with findings on other need-based grants. This result suggests that the minimum Pell Grant amount, currently less than 10% of an average college’s tuition and fees, may be insufficient.  相似文献   
227.
Concept inventories, consisting of multiple-choice questions designed around common student misconceptions, are designed to reveal student thinking. However, students often have complex, heterogeneous ideas about scientific concepts. Constructed-response assessments, in which students must create their own answer, may better reveal students' thinking, but are time- and resource-intensive to evaluate. This report describes the initial meeting of a National Science Foundation-funded cross-institutional collaboration of interdisciplinary science, technology, engineering, and mathematics (STEM) education researchers interested in exploring the use of automated text analysis to evaluate constructed-response assessments. Participants at the meeting shared existing work on lexical analysis and concept inventories, participated in technology demonstrations and workshops, and discussed research goals. We are seeking interested collaborators to join our research community.  相似文献   
228.
Most Australian sport stakeholders not only believe that government regulation is a good thing, but also assume that intervention in the drug-use problem will improve sport's social outcomes and operational integrity. In this paper we examine the regulation of illicit drug use in Australian sport through an interrogation of two cases: the Australian Football League and the National Rugby League. Using Pierre Bourdieu's conceptual frames of social field, capital, and habitus, we aim to secure a clearer understanding of the drivers of Australian sport's illicit drug regulations by (1) identifying those stakeholders who set the drug regulation agenda, (2) revealing the values and dispositions that underpin these regulations, and (3) explaining how dominant stakeholders go about sustaining their position and marginalising those stakeholders with opposing drug regulation claims. Our results show that Australian sport's drug-use regulations are driven by a set of values and dispositions that views sport as an instrument for shaping the character of its participants, and drugs as a threat to sport's moral fabric and good standing. The dominant stakeholders, comprising the Commonwealth Government, its sport agencies, and the major governing bodies for sport, imposed these values and dispositions on peripheral stakeholders by designing a drugs-in-sport social field that yielded capital and power to only those participants who endorsed these values and dispositions. Peripheral stakeholders – including players, their agents, and drug-treatment professionals – who mostly shared different values and dispositions, were sidelined, and denied the opportunity of adding to their already limited supplies of capital, power, and policy making influence.  相似文献   
229.
Steve Squyres was responsible for assembling the team of scientists, engineers and instruments that formed the Mars Exploration Rovers (MER). Squyres developed a vision that small-scale observations made by a robotic geologist on Mars would be the key for resolving the mystery of water on Mars. Prior to the MER missions, planetary scientists were divided between groups holding that ancient fluvial-like surface features on Mars were formed by water and those holding that the erosive and depositional forces were tied to liquid and gaseous CO2. At issue was a fundamental understanding not only of early Martian geological processes and early solar luminosity, but also the possibility of life on Mars. To resolve these questions, Squyres and his team developed a new breed of rovers that were capable of identifying minerals and collecting textural observations. The resulting twin rovers, Opportunity and Spirit, have successfully resolved the single most important question about Mars that scientists have been debating for the past 30 years, providing compelling evidence for the action of water on the Martian surface. Squyres and the MER team have also initiated a new era in planetary exploration and inspired a new generation of students to become scientists and explorers. Steve Squyres and the MER team produced fundamental insights into the geology and climatology of Mars. These have resulted in major advances in our understanding of the potential for life on other planets and of life’s evolution on Earth. For the discovery and elucidation of water on Mars through the “robotic geologists” of the Mars Exploration Rovers, Steve Squyres was awarded the 2007 Benjamin Franklin Medal in Earth and Environmental Science.  相似文献   
230.
This paper examines the role of trust in the information continuum. It argues that in the context of Canadian federal government records, an analogous ??trust continuum?? is a useful model for analysing the relationships that exist between creator, archives and user in the information-abundant environment. The paper borrows from sociological theory to posit that creator, archives and user are bound together in a complex expert system that facilitates trust and mitigates risk in a broad societal context and contends that these interactions are shaped at the macro level by a dominant public discourse of accountability. These points are illustrated through three recent examples at Library and Archives Canada. First, the relationship between Canadian society and the archives is explored by interrogating the concept of relevance and assessing the feasibility of managing a pan-Canadian collection via a national network of knowledge institutions. Then, the role of trust between the archives and the creator in the management of government digital information resources is examined in light of the recently issued Directive on Recordkeeping, and in the context of LAC??s Trusted Digital Repository. Finally, Commissions of Inquiry??and the Indian Specific Claims Commission in particular??demonstrate both the power of archival records in repairing trust between a society and its government and the iterative nature of the relationship between the user and the archives.  相似文献   
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