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31.
Laura M. Argys Daniel I. Rees Dominic J. Brewer 《Journal of policy analysis and management》1996,15(4):623-645
Schools across the country are ending the practice of grouping students based on ability, in part, because of research indicating that tracking hurts low-ability students without helping students of other ability levels. Using a nationally representative survey conducted by the National Center for Education Statistics, (NCES) we reexamine the impact of tracking on high school student achievement through the estimation of a standard education production function. This approach allows us to control for the possibility that track is correlated with factors such as class size and teacher education. In addition, we address the possibility that there are unobserved student or school characteristics that affect both achievement and track placement. Our results indicate that abolishing tracking in America's schools would have a large positive impact on achievement for students currently in the lower tracks, but that this increase in achievement would come at the expense of students in upper-track classes. 相似文献
32.
Laura Seddelmeyer 《澳大利亚政治与历史杂志》2021,67(1):16-31
Great Britain's decision to withdraw its forces from Southeast Asia by the mid-1970s created uncertainty for those living in the region. The potential loss of British presence led Australia to attempt to discourage Britain from leaving, while also recsognising recognising the decision as an opportunity to re-evaluate Australia's strategic outlook in Southeast Asia and the Pacific. Scholars have treated Asia and the Pacific as two regions with distinct experiences related to withdrawal. Some address changing Anglo-Australian relations but include little, or no, mention of the Pacific territories. Others, writing about the Pacific, focused more the individual paths taken by each island than on connecting the larger process of decolonisation in the Pacific to the one in Asia. This article pairs Australia's Strategic Basis of Defence papers with documentary evidence across multiple departments in Canberra to understand how British withdrawal from east of Suez connected Australian concerns about security in Southeast Asia and the Pacific Islands. By connecting the two areas through Australian interests, the withdrawal from east of Suez can be understood as a catalyst for Australia's pursuit of a distinctive role within its neighbourhood. 相似文献
33.
Rogers Adam A. Padilla-Walker Laura M. McLean Ryan D. Hurst Jeffrey L. 《Journal of youth and adolescence》2020,49(1):136-149
Journal of Youth and Adolescence - Theory and research indicate considerable changes in parental control across adolescence (e.g., declining behavioral control), but the developmental course and... 相似文献
34.
Rizzo Ugo Barbieri Nicolò Ramaciotti Laura Iannantuono Demian 《The Journal of Technology Transfer》2020,45(2):393-413
The Journal of Technology Transfer - The paper investigates the relationship between public research and radical technological development. This study draws on the theory of recombinant innovation... 相似文献
35.
Psychological Injury and Law - Forensic evaluators frequently utilize diagnoses as a way to document the nature and severity of impairment and/or injury in civil and criminal cases despite... 相似文献
36.
Jolien Trekels Kathrin Karsay Steven Eggermont Laura Vandenbosch 《Journal of youth and adolescence》2018,47(7):1440-1455
Although media exposure has been related to cognitive preoccupation with appearance, research rarely investigated adolescents’ behavioral self-sexualization. To address this gap, the present study among 12- to 16-year-olds (N?=?1527; 50.2% girls) in Austria, Belgium, Spain, and South-Korea (1) investigates whether different types of media use relate to self-sexualization, (2) explores the explanatory value of rewarded appearance ideals, and (3) considers culture and gender as moderating factors. Despite cultural variation, a general trend of increasing self-sexualization with social media use and magazine reading appeared across the countries. Moreover, women’s magazine reading and rewards were related to self-sexualization among all the girls across the countries, which suggests that girls may be more vulnerable to the examined effects. Overall, this study provides a better understanding of the unique contribution of specific media genres to youth’s self-sexualization and points at the importance of social media use in girls’ and boys’ engagement in sexualizing appearance behaviors across four countries. 相似文献
37.
Atika Khurana Daniel Romer Laura M. Betancourt Hallam Hurt 《Journal of youth and adolescence》2018,47(9):1992-2005
Developmental imbalance models attribute the rise in risk-taking during adolescence to a universal imbalance between rising reward sensitivity and lagging cognitive control. This study tested predictions of an alternate Lifespan Wisdom Model that distinguishes between exploratory/adaptive (e.g., sensation seeking) and maladaptive (e.g., acting-without-thinking, delay discounting) risk-taking propensities and attributes the latter to a sub-set of youth with weak cognitive control. Latent trajectory modeling of six waves of data from 387 adolescents (52% females; spanning average ages of 11–18 years) revealed distinct sub-groups with heterogeneous trajectory patterns for acting-without-thinking and delay-discounting. Only those trajectory groups with weak cognitive control, characterized as “high-increasing” acting-without thinking and “high-stable” delay discounting were predictive of a maladaptive risk-taking outcome, namely substance use disorder. Sensation seeking demonstrated a universal peak, but high levels of sensation seeking were not associated with weakness in cognitive control and were unrelated to substance use disorder, controlling for impulsivity. The findings suggest that maladaptive risk-taking characterized by weak cognitive control over reward-driven impulses is a phenomenon limited to only a sub-set of youth. 相似文献
38.
Laura M. Padilla-Walker Sarah M. Coyne Savannah L. Kroff Madison K. Memmott-Elison 《Journal of youth and adolescence》2018,47(2):445-459
The goal of the current study was to examine the protective role that maternal media monitoring might have for adolescents. This was done by considering whether styles of media monitoring either directly reduced media use, or whether they buffered the associations between aggressive media use and adolescents’ prosocial behavior, aggression, and delinquency. Participants were 681 adolescents from two cities in the United States (51% female; 73% white), and their mothers, who provided data at two different time points, 2 years apart (when adolescents were roughly ages 13 and 15). Mixture modeling results revealed that mothers used four different styles of media monitoring made up of combinations of active and restrictive monitoring as well as forms of co-use. Styles that included active monitoring and connective co-use (i.e., engaging in media with the intent to connect with children) were directly associated with less media use, and moderated links between adolescents’ media use and behavioral outcomes concurrently but not longitudinally. The discussion was focused on the strength of considering multiple strategies of media monitoring together, and how this approach can inform future research in the area of parental media monitoring. 相似文献
39.
Laura German Alois Mandondo Fiona Paumgarten Jacob Mwitwa 《The Journal of peasant studies》2014,41(1):51-78
Customary land and forests are more embedded in the global economy than ever. With globally significant supplies of land and raw materials and favorable terms for foreign investors, developing countries – particularly in Africa – have become increasingly attractive trade partners and destinations for investors. Increasing competition over land is placing new pressures on vast tracts of forest and woodland, areas often considered ‘under-utilized’ by national governments despite their critical role in supporting local livelihoods. While increased demand for primary agricultural, forest and mining commodities in the context of forest tenure reforms and decentralized decision-making could create unprecedented economic opportunities for forest-dependent communities, increased ‘stakes’ over forest resources and land will undoubtedly heighten governance challenges. This is in no small part due to the political dynamics of property, and to the role of the ‘recursive constitution of property rights and authority’ in the evolution of the modern nation-state. By identifying the social ‘stakes’ associated with different pathways through which sectoral and extra-sectoral commodities shape forests, this paper provides a conceptual framework for analyzing how shifting contours of rights, property and authority in the context of forest-related trade and investment shape human well-being for affected communities and the wider citizenry of host countries. It then illustrates the use of the framework through its application to two brief case studies from southern Africa: tobacco production in Malawi and copper mining in Zambia. It is hoped that this framework will provide a meaningful contribution to growing scholarship on the political dynamics of property, and implications for rights-based approaches to agricultural investment and large-scale land acquisitions. 相似文献
40.
Duell Natasha Steinberg Laurence Icenogle Grace Chein Jason Chaudhary Nandita Di Giunta Laura Dodge Kenneth A. Fanti Kostas A. Lansford Jennifer E. Oburu Paul Pastorelli Concetta Skinner Ann T. Sorbring Emma Tapanya Sombat Tirado Liliana Maria Uribe Alampay Liane Peña Al-Hassan Suha M. Takash Hanan M. S. Bacchini Dario Chang Lei 《Journal of youth and adolescence》2019,48(4):835-836
Journal of Youth and Adolescence - In the original publication, the legends for Figs 4 and 5 were incorrect, such that each regression line was mislabeled with the incorrect country. Below are the... 相似文献