Prenatal Maternal Stress,Child Cortical Thickness,and Adolescent Depressive Symptoms     

Elysia Poggi Davis  Benjamin L. Hankin  Laura M. Glynn  Kevin Head  Dae Jin Kim  Curt A. Sandman 《Child development》2020,91(2):e432-e450

Prenatal maternal stress predicts subsequent elevations in youth depressive symptoms, but the neural processes associated with these links are unclear. This study evaluated whether prenatal maternal stress is associated with child brain development, and adolescent depressive symptoms using a prospective design with 74 mother child pairs (40 boys). Maternal stress was assessed during pregnancy, child cortical thickness at age 7, and depressive symptoms at age 12. Prenatal maternal stress was associated with less cortical thickness primarily in frontal and temporal regions and with elevated depressive symptoms; child cortical thickness additionally correlated with adolescent depressive symptoms. The observed associations are consistent with the possibility that cortical thickness in superior frontal regions links associations between prenatal maternal stress and adolescent depressive symptoms.  相似文献   

Pathways of China's PM2.5 air quality 2015–2060 in the context of carbon neutrality     

Jing Cheng  Dan Tong  Qiang Zhang  Yang Liu  Yu Lei  Gang Yan  Liu Yan  Sha Yu  Ryna Yiyun Cui  Leon Clarke  Guannan Geng  Bo Zheng  Xiaoye Zhang  Steven J Davis  Kebin He 《国家科学评论(英文版)》2021,8(12)

Clean air policies in China have substantially reduced particulate matter (PM_2.5) air pollution in recent years, primarily by curbing end-of-pipe emissions. However, reaching the level of the World Health Organization (WHO) guidelines may instead depend upon the air quality co-benefits of ambitious climate action. Here, we assess pathways of Chinese PM_2.5 air quality from 2015 to 2060 under a combination of scenarios that link global and Chinese climate mitigation pathways (i.e. global 2°C- and 1.5°C-pathways, National Determined Contributions (NDC) pledges and carbon neutrality goals) to local clean air policies. We find that China can achieve both its near-term climate goals (peak emissions) and PM_2.5 air quality annual standard (35 μg/m³) by 2030 by fulfilling its NDC pledges and continuing air pollution control policies. However, the benefits of end-of-pipe control reductions are mostly exhausted by 2030, and reducing PM_2.5 exposure of the majority of the Chinese population to below 10 μg/m³ by 2060 will likely require more ambitious climate mitigation efforts such as China''s carbon neutrality goals and global 1.5°C-pathways. Our results thus highlight that China''s carbon neutrality goals will play a critical role in reducing air pollution exposure to the level of the WHO guidelines and protecting public health.  相似文献   

Preservice Elementary Teachers’ Reflection on Narrative Images of Inquiry     

Christine M. Dietz  Elizabeth A. Davis 《Journal of Science Teacher Education》2009,20(3):219-243

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Revealing the research ‘hole’ of early childhood education for sustainability: a preliminary survey of the literature     

Julie Davis 《Environmental Education Research》2009,15(2):227-241

In 2007, Environmental Education Research dedicated a special issue to childhood and environmental education. This paper makes a case for ‘early childhood’ to also be in the discussions. Here, I am referring to early childhood as the before‐school years, focusing on educational settings such as childcare centres and kindergartens. This sector is one of the research ‘holes’ that Reid and Scott ask the environmental education community to have the ‘courage to discuss’. This paper draws on a survey of Australian and international research journals in environmental education and early childhood education seeking studies at their intersection. Few were found. Some studies explored young children’s relationships with nature (education in the environment). A smaller number discussed young children’s understandings of environmental topics (education about the environment). Hardly any centred on young children as agents of change (education for the environment). At a time when there is a growing literature showing that early investments in human capital offer substantial returns to individuals and communities and have a far‐reaching effect – and when early childhood educators are beginning to engage with sustainability – it is vital that our field responds. This paper calls for urgent action – especially for research – to address the gap.  相似文献   

Guest Editorial     

Charles H. Davis 《The Journal of Academic Librarianship》2009,35(1):1-2

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Investigating teacher learning supports in high school biology curricular programs to inform the design of educative curriculum materials     

Carrie J. Beyer  Cesar Delgado  Elizabeth A. Davis  Joseph Krajcik 《科学教学研究杂志》2009,46(9):977-998

Reform efforts have emphasized the need to support teachers' learning about reform‐oriented practices. Educative curriculum materials are one potential vehicle for promoting teacher learning about these practices. Educative curriculum materials include supports that are intended to promote both student and teacher learning. However, little is known about the extent to which existing curriculum materials provide support for teachers and the ways they can be improved. In this study, eight sets of high school biology curriculum materials were reviewed to determine their potential for promoting teacher learning. Design heuristics for educative curriculum materials were adapted for use as evaluation criteria. From this analysis, several themes emerged. First, the materials tended to provide support for teachers' subject matter knowledge and pedagogical content knowledge for students' ideas (e.g., misconceptions) but rarely for their pedagogical content knowledge of scientific inquiry. Second, the materials contained several implementation guidance supports but far fewer rationales for instructional decisions, which are an important feature of educative curriculum materials. Finally, the quality of support varied widely, differing in its degree of relevance, pedagogical helpfulness, and depth. The article concludes with recommendations for the redesign of existing curriculum materials. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 46: 977–998, 2009  相似文献   

The role of injection cues in the production of the morphine preexposure effect in taste aversion learning     

Catherine M. Davis  Isabel De Brugada  Anthony I. Riley 《Learning & behavior》2010,38(2):103-110

The attenuation of an LiCl-induced conditioned taste aversion (CTA) by LiCl preexposure is mediated primarily by associative blocking via injection-related cues. Given that preexposure to morphine attenuates morphine-induced CTAs, it was of interest to determine whether injection cues also mediate this effect. Certain morphine-induced behaviors such as analgesic tolerance are controlled associatively, via injection-related cues. Accordingly, animals in the present experiments were preexposed to morphine (or vehicle) every other day for five total exposures, followed by an extinction phase, in which the subjects were given saline injections (or no treatment) for 8 (Experiment 1) or 16 (Experiment 2) consecutive days. All of the animals then received five CTA trials with morphine (or vehicle). The morphine-preexposed animals in Experiment 1 displayed an attenuation of the morphine CTA that was unaffected by extinction saline injections, suggesting that blocking by injection cues during morphine preexposure does not mediate this effect. All of the morphine-preexposed subjects in Experiment 2 displayed a weakened preexposure effect, an effect inconsistent with a selective extinction of drug-associated stimuli. The attenuating effects of morphine preexposure in aversion learning are most likely controlled by nonassociative mechanisms, like drug tolerance.  相似文献   

Civic Respect, Civic Education, and the Family     

Blain  Neufeld & Gordon  Davis 《Educational Philosophy and Theory》2010,42(1):94-111

We formulate a distinctly 'political liberal' conception of mutual respect, which we call 'civic respect', appropriate for governing the public political relations of citizens in pluralist democratic societies. A political liberal account of education should aim at ensuring that students, as future citizens, learn to interact with other citizens on the basis of civic respect. While children should be required to attend educational institutions that will inculcate in them the skills and concepts necessary for them to be free and equal citizens, parents should be granted as much freedom as is compatible with the requirements of civic respect to raise their children in accordance with their respective 'comprehensive doctrines' (systems of beliefs and values, including religious doctrines). We consider an objection to our position drawn from the account of upbringing recently advanced by Matthew Clayton, namely, that the conception of civic respect that we advance rests on an implausible view about the limited scope of the requirements of political justice. We develop an account of the 'basic structure of society' as the appropriate subject of political justice that can overcome this objection.  相似文献   

Feeling number: grounding number sense in a sense of quantity     

David Wagner  Brent Davis 《Educational Studies in Mathematics》2010,74(1):39-51

Drawing on results from psychology and from cultural and linguistic studies, we argue for an increased focus on developing quantity sense in school mathematics. We explore the notion of “feeling number”, a phrase that we offer in a twofold sense—resisting tendencies to feel numb-er (more numb) by developing a feeling for numbers and the quantities they represent. First, we distinguish between quantity sense and the relatively vague notion of number sense. Second, we consider the human capacity for quantity sense and place that in the context of related cultural issues, including verbal and symbolic representations of number. Third and more pragmatically, we offer teaching strategies that seem helpful in the development of quantity sense coupled with number sense. Finally, we argue that there is a moral imperative to connect number sense with such a quantity sense that allows students to feel the weight of numbers. It is important that learners develop a feeling for number, which includes a sense of what numbers are and what they can do.  相似文献   

Curriculum design for inquiry: Preservice elementary teachers' mobilization and adaptation of science curriculum materials     

Cory T. Forbes  Elizabeth A. Davis 《科学教学研究杂志》2010,47(7):820-839

Curriculum materials are crucial tools with which teachers engage students in science as inquiry. In order to use curriculum materials effectively, however, teachers must develop a robust capacity for pedagogical design, or the ability to mobilize a variety of personal and curricular resources to promote student learning. The purpose of this study was to develop a better understanding of the ways in which preservice elementary teachers mobilize and adapt existing science curriculum materials to plan inquiry‐oriented science lessons. Using quantitative methods, we investigated preservice teachers' curriculum design decision‐making and how their decisions influenced the inquiry orientations of their planned science lessons. Findings indicate that preservice elementary teachers were able to accurately assess how inquiry‐based existing curriculum materials are and to adapt them to make them more inquiry‐based. However, the inquiry orientations of their planned lessons were in large part determined by how inquiry‐oriented curriculum materials they used to plan their lessons were to begin with. These findings have important implications for the design of teacher education experiences that foster preservice elementary teachers' pedagogical design capacities for inquiry, as well as the development of inquiry‐based science curriculum materials that support preservice and beginning elementary teachers to engage in effective science teaching practice. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:820–839, 2010  相似文献