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91.
Jeffrey Penney 《Economic inquiry》2018,56(2):1244-1260
Using data from a large‐scale two‐stage experiment wherein students and teachers were randomized at both kindergarten entry and first grade to be sorted into classes either with or without full‐time teacher's aides, I estimate an econometric model that is uniquely suited to take advantage of this design to determine their effect on academic achievement. The identification strategy produces fully nonparametric dynamic average treatment effects for every treatment path. I find that the use of full‐time teacher's aides increases student achievement, but the benefits appear to accrue mostly to those of higher socioeconomic status and to White students. A cost‐benefit analysis shows that full‐time teacher's aides may be a competitive alternative to class size reductions in terms of net social benefits. (JEL I21, I28) 相似文献
92.
Examination of the relationships between dietary restraint,alcohol, and adverse problems among women
Laura J. Buchholz Janis H. Crowther Jeffrey A. Ciesla 《Journal of American college health : J of ACH》2018,66(5):384-392
Objective: Women who report greater chronic dieting consume more alcohol, drink more frequently, and experience greater problems than women who report less chronic dieting. Alcohol may also temporarily disrupt a woman's dietary rules, leading to increased caloric intake and subsequent restriction. This study examined whether alcohol use mediated the relationship between dietary restraint and alcohol problems in a woman's daily life. Participants: Women (N = 59) completed the study by the fall of 2013. Methods: Participants completed up to six assessments for 10 days, including intended dietary restraint, alcohol use, and problems. Results: Drinking quantity partially mediated the relationship between dietary restraint and alcohol problems. For each drink consumed, there was a 1.4 times greater likelihood of eating after drinking, which was associated with greater intention to subsequently restrict calories. Conclusions: The types of drinks consumed and reasons for restricting one's caloric intake may inform the relationship between these behaviors. 相似文献
93.
94.
Patrick Heuveline Hongxing Yang Jeffrey M. Timberlake 《Journal of marriage and the family》2010,72(5):1362-1376
Research in the United States has shown that children growing up in 2‐parent households do better in school than children from single‐parent households. We used the Trends in International Mathematics and Science Study (TIMSS) data to test whether this finding applied to other countries as well (N = 100,307). We found that it did, but that the educational gap was greater in the United States than in the other 13 countries considered. Results from 2‐level hierarchical linear models demonstrated that international differences in the educational gap were associated with several indicators of national policy and demographic contexts. No single policy appeared to have a large effect, but several policy combinations were associated with substantially reduced educational gaps between children from different family structures. 相似文献
95.
Sheri Lokken Worthy Jeffrey Jonkman Lynn Blinn-Pike 《Journal of Family and Economic Issues》2010,31(2):161-170
College students are at especially high risk for serious financial problems due to easy availability of credit cards, rising tuition, and a declining economy. Arnett (Am Psychol 55:469–480, 2000) proposed 18–25 year olds may be considered emerging adults and are characterized by less stable financial situations than those who perceive themselves to be adults. A survey was given to 450 students at two Mississippi universities. The results showed student financial behaviors were related to age, gender, public assistance, adult status, sensation-seeking, and potential for problem gambling. This study is unique in that it investigated the relationship of emerging adult/adult status and other individual and socio-demographic variables to financial behaviors among college students, a conceptualization that has not been explored in the past. 相似文献
96.
Theory and Society - Sociologists of education often emphasize goods that result from a practice (external goods) rather than goods intrinsic to a practice (internal goods). The authors draw from... 相似文献
97.
van Overbeeke Philine S. M. Koolen-Maas Stephanie A. Meijs Lucas C. P. M. Brudney Jeffrey L. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2022,33(1):33-45
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Volunteering appears to be a mechanism that can contribute to societal inclusion. As nonprofit organizations continuously... 相似文献
98.
Jun Liu Yuan-jun Yang Ya-ru Cao Jeffrey Yi-Lin Forrest 《Journal of Policy Modeling》2021,43(3):558-573
Based on the pilot projects of intelligent manufacturing of the Ministry of Industry and Information Technology of the People’s Republic of China and the annual data reported by listed companies, this paper studies the effect of China's intelligent policy on the performance of listed manufacturing companies by using the panel data of relevant enterprises from 2011 to 2017, as well as the mechanism of impact. Our empirical tests, using the difference-in-difference method, shows that intelligent policy can significantly improve the economic performance of manufacturing enterprises by guiding enterprises to optimize their intelligent management, strengthening investment in intelligent equipment and promoting collaborative manufacturing. Further empirical tests show that the impact of intelligent policy on economic performance is different in time. In the later selected pilot enterprises, the impact of intelligent policy on their economic performance is more significant; there is regional heterogeneity in the effects of intelligent policy: in regions with low intelligence, the positive impact of intelligent policy on the economic performance of manufacturing industry is more significant. Based on these conclusions, relevant intelligent policy suggestions are put forward. 相似文献
99.
Jeffrey H. Cohen Nidia Merino Chavez 《International migration (Geneva, Switzerland)》2013,51(2):24-31
Columbus, Ohio has witnessed rapid growth in its Latino population as immigrants settle in the city to access jobs and a generally low cost of living. Immigrants also face discrimination as they settle in Columbus and interact with the city's citizens. In this paper, we note how discrimination plays out in social and economic isolation; a lack of programmes to support the incorporation of Latinos in the city; and state laws that target immigrants. We present results of ongoing ethnographic work with the Latino community in Columbus. 相似文献
100.
Jeffrey L. Kidder 《Qualitative sociology》2013,36(3):231-250
Parkour is a new sport based on athletically and artistically overcoming urban obstacles (e.g., climbing up and vaulting over walls). In this paper, I position parkour as a form of urban adventurism allowing for tests of individual character. This involves what I call rites of risk and rituals of symbolic safety. Together these rites and rituals allow individuals to seek out exciting and dangerous activities while couching their risk-taking in discourses and practices that affirm the value of the self. Thus, although parkour can be dangerous, practitioners use symbolic forms of safety to give their actions meaning and emphasize their ability to handle the risks involved. 相似文献