Getting What You Pay For: Children's Use of Market Norms to Regulate Exchanges     

Margaret Echelbarger  Susan A. Gelman  Charles W. Kalish 《Child development》2019,90(6):2071-2085

Children are sensitive to a number of considerations influencing distributions of resources, including equality, equity, and reciprocity. We tested whether children use a specific type of reciprocity norm—market norms—in which resources are distributed differentially based strictly on amount offered in return. In two studies, 195 children 5–10 years and 60 adults distributed stickers to friends offering same or different amounts of money. Overall, participants distributed more equally when offers were the same and more unequally when offers were different. Although sensitive to why friends offered different amounts of money, children increasingly incorporated market norms into their distributions with age, as the oldest children and adults distributed more to those offering more, irrespective of the reasons provided.  相似文献   

Medieval and renaissance glass technology in Valdelsa (Florence). Part 1: raw materials, sands and non-vitreous finds     

U. Casellato  F. Fenzi  P. Guerriero  S. Sitran  P. A. Vigato  U. Russo  M. Galgani  M. Mendera  A. Manasse 《Journal of Cultural Heritage》2003,4(4):337-353

A significant number of archaeological finds of the 13th–16th century from the Tuscan sites of Germagnana and Gambassi in Valdelsa—FI, was studied by different physico-chemical investigations (SEM–EDS, ICP, Mössbauer spectroscopy, XRD, XRF, TG-DTA) in order to contribute to clarify the production methodology and the pre-industrial glass manufacture technology. The studied samples are mainly non-vitreous finds as production waste, refractory materials, crucibles and raw materials; also vitreous finds as frits, skims, glasses (glass masses, glass working waste and finished products) have been taken into consideration. The obtained petrographic and physico-chemical data strongly suggest that both Gambassi and Germagnana glass manufactures were strictly connected with the sources of vitrifiable materials, situated in Tuscan sand quarries. In particular a comparison between sands from the neighbouring quarries and appropriate finds of the two archaeological sites evidences that the employed vitrifiable materials possibly belong to La Casina La Cava resort. The archaeological classification, based on macroscopic observation and stratigraphic position, was compared and verified with the scientific classification of the examined finds of Germagnana and Gambassi sites based on their composition, morphology and physico-chemical properties.  相似文献   

Social Perceptions of Students with Learning Disabilities Who Differ in Social Status     

Hedda Meadan  James W. Halle 《Learning disabilities research & practice》2004,19(2):71-82

As a group, students with learning disabilities (LD) have social difficulties. One possible explanation for these difficulties is the unique way they process social information. Although students with LD may differ from their nondisabled peers in their social cognition, investigators have suggested the presence of subgroups within the population of students with LD who may differ in their social competence and, thereby, shed light on the source of the difficulties. The present exploratory study examined how two subgroups of students with LD in inclusive settings, students with high and low social status, perceive social situations. Using a sociometric technique, three students with LD receiving high social‐status ratings and three students with LD receiving low social‐status ratings were identified. A qualitative approach was used to gather and evaluate data from the participants and their teachers. Results suggested differences between the two subgroups in their (1) sensitivity to cues in the environment, (2) interpretation of social situations in relation to their own experiences, and (3) levels of self‐control. Implications of these findings for practice and future research are discussed.  相似文献   

Faces in the mirror: Five decades of research and comment on the book trade 1931–2001     

Peter W. Adams 《Publishing Research Quarterly》2001,17(1):43-50

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影响领导干部考察工作质量的主要因素及改进办法     

罗聪 《重庆广播电视大学学报》2005,17(2):3-4,14

影响领导干部考察工作质量的主要因素是考察制度不健全和考察机制不完善,评价标准难定和考察内容难准,考察方法简单和考察范围狭小,考察力量薄弱和考察人员不适应.改进考察工作的主要措施是完善领导干部考察评价标准体系,改进领导干部考察工作的方式方法,提高考察者的综合素质.  相似文献   

爸爸忘了你还只是个孩子     

W.Livingstom Larned  杨双菊 《海外英语》2004,(8):21

本期推出两篇短小精美的文章,表达了父爱的温馨,有兴趣的读者朋友不妨将它们作为范文来诵渎。  相似文献   

秦历史环境变迁与关中民族传统体育发展   总被引：2，自引：0，他引：2  

黄聪  张鲲 《北京体育大学学报》2004,27(3):319-321

采取文献资料、逻辑分析等方法,研究了秦由部落生活、奴隶社会向封建社会的历史环境变迁及其在关中的民族分布状况,从而探析秦关中民族传统体育的发展.结果表明:秦经历了由小到大、由弱到强的曲折发展及社会形态的演变,以关中为政治、经济、文化、军事中心,建都570余年,最终统一全国,实现民族大融合,关中民族传统体育的发展随着秦的历史环境变迁而变化.  相似文献   

Lectures on ventilation     

L.W. Leeds 《Journal of The Franklin Institute》1872,94(3):205-209

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WHAT A MEDICAL LIBRARY CAN ACCOMPLISH IN A SMALL TOWN     

Bulette WW 《Bulletin of the Medical Library Association》1915,4(4):59-60

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The effect of primary cosmic-ray energy upon burst production     

W.F.G. SwannD.B. Cowie 《Journal of The Franklin Institute》1937

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