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Do local conditions determine the direction of science? Evidence from U.S. land grant colleges 地方条件决定科学的方向吗?来自美国赠地大学的证据
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-07-01 Epub Date: 2025-03-14 DOI: 10.1016/j.eeh.2025.101669
Michael J. Andrews , Alexa Smith
We quantify the extent to which land grant colleges were located in counties that grow different crops than the rest of their states, which we call agricultural unrepresentativeness. We find that land grant colleges located in agriculturally unrepresentative counties tended to produce research focusing on more unrepresentative crops. We find similar results when exploiting historical college site selection natural experiments to identify exogenous variation in the agricultural unrepresentativeness of the college county. Moreover, we find that colleges in agriculturally unrepresentative locations created more geographically limited productivity spillovers.
我们量化了土地补助大学位于种植不同于其他州作物的县的程度,我们称之为农业不代表性。我们发现,位于农业不具代表性的县的赠地学院倾向于研究更不具代表性的作物。我们利用历史大学选址自然实验来确定大学县农业不代表性的外生变异,也得到了类似的结果。此外,我们发现,在农业不具代表性的地区,大学产生的生产力溢出效应在地理上更有限。
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引用次数: 0
Introduction to special issue of explorations in economic history on the impacts of World War II on the U.S. economy 导论特刊探讨经济史上第二次世界大战对美国经济的影响
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-07-01 Epub Date: 2025-06-07 DOI: 10.1016/j.eeh.2025.101700
William J. Collins , Andreas Ferrara , Price V. Fishback
World War II was one of the greatest crises in American history. The United States devoted an enormous amount of resources to fight the war with long range consequences for the economy. This is the introduction to a special issue on the impact of the U.S. involvement in World War II. It provides context for the papers in the issue. The papers address the experiences of veterans of various races and ethnicities later in life; the impact of the war on the longevity of black veterans and citizens; war programs devoted to providing care and education to young children; war bonds and their impact on the financial system; the influence of pipeline projects on development; the effect of wage regulations on the income distribution, and the effect of war mobilization on productivity gains at the national and regional levels.
第二次世界大战是美国历史上最大的危机之一。美国投入了大量的资源来打这场对经济造成长期影响的战争。这是一期关于美国卷入第二次世界大战影响的特刊的导言。它为本期的论文提供了背景。这些论文讲述了不同种族和民族的退伍军人在以后的生活中的经历;战争对黑人退伍军人和公民寿命的影响;致力于为儿童提供照顾和教育的战争项目;战争债券及其对金融体系的影响;管道项目对发展的影响;工资管制对收入分配的影响,以及战争动员对国家和地区一级生产率提高的影响。
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引用次数: 0
Mobilizing the manpower of mothers: Childcare under the Lanham Act during WWII 动员母亲的人力:二战期间兰哈姆法案下的儿童保育
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-07-01 Epub Date: 2025-04-15 DOI: 10.1016/j.eeh.2025.101684
Claudia Goldin , Claudia Olivetti , Joseph Ferrie
The Lanham Act was a federal infrastructure bill passed by Congress in 1940 and eventually used to fund programs for the preschool and school-aged children of working women during WWII. It remains, to this day, the only example in US history of an (almost) universal, largely federally supported childcare program. We explore its role in enabling and increasing the labor supply of mothers during WWII using information on the program, war contracts, and employment at the city level. Use of Lanham Act funds for a wartime childcare program was initially controversial. However, the program was eventually well funded per child in average daily attendance and provided generally high-quality care. But it was late to start, limited in scope, and incapable of greatly increasing women’s employment in the aggregate. Childcare facilities were funded more in places that already had higher participation rates of mothers and where the wartime need was the greatest. The impact on the children served is still to be determined.
兰哈姆法案是国会于1940年通过的一项联邦基础设施法案,最终用于资助二战期间职业妇女的学龄前和学龄儿童项目。直到今天,它仍然是美国历史上唯一一个(几乎)普及的、主要由联邦政府支持的儿童保育项目。我们利用该项目、战争合同和城市层面的就业信息,探讨了它在二战期间促进和增加母亲劳动力供应方面的作用。将《兰哈姆法案》的资金用于战时儿童保育项目最初是有争议的。然而,该计划最终为每个儿童的平均每日出勤提供了充足的资金,并提供了总体上高质量的护理。但起步晚,范围有限,总体上无法大幅增加妇女就业。在那些母亲参与率较高以及战时需求最大的地方,托儿设施得到了更多的资助。对所服务儿童的影响仍有待确定。
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引用次数: 0
Early-life lead exposure and male longevity: Evidence from historical municipal water systems 早期铅暴露与男性寿命:来自历史城市供水系统的证据
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-07-01 Epub Date: 2025-06-15 DOI: 10.1016/j.eeh.2025.101701
Jason Fletcher , Hamid Noghanibehambari
Several research strands document the life-cycle impacts of lead exposure during early life. Yet little is known about the long-run effects of lead exposure during early life on old-age mortality outcomes. In this study, we employ Social Security Administration death records linked to the full-count 1940 census and document that birth-city lead status negatively affects later life old age longevity. These impacts are larger for cities with acidic water and older pipeline systems that allow higher lead levels to leach into drinking water. Further, we show that the impacts are almost exclusively concentrated on the lead status of the birth-city and not the city of residence later in life. An instrumental variable strategy suggests reductions in longevity associated with birth-city lead status of about 9.6 months. We also find education, socioeconomic standing, and income reductions during early adulthood as candidate mechanisms. Finally, we use WWII enlistment data and observe reductions in measures of cognitive ability among lead-exposed individuals.
一些研究记录了生命早期接触铅对生命周期的影响。然而,人们对早年接触铅对老年死亡率结果的长期影响知之甚少。在这项研究中,我们采用了与1940年人口普查相关的社会保障局死亡记录,并证明出生城市领先地位对晚年生活和老年寿命有负面影响。这些影响对酸性水和老旧管道系统的城市更大,这些管道系统允许较高的铅含量渗入饮用水。此外,我们表明,这些影响几乎完全集中在出生城市的铅地位上,而不是在以后的生活中居住的城市。一项工具变量策略表明,与出生城市领先状态有关的寿命减少约9.6个月。我们还发现,在成年早期,教育、社会经济地位和收入减少是可能的机制。最后,我们使用第二次世界大战的入伍数据,观察铅暴露个体的认知能力指标的降低。
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引用次数: 0
The fertility response to price changes in a manorial society: The case of rural Estonia, 1834–1884 庄园社会中生育率对价格变化的反应:以爱沙尼亚农村为例,1834-1884
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2025-01-05 DOI: 10.1016/j.eeh.2024.101653
Martin Klesment, Kersti Lust
In the pre-industrial era, changing economic conditions had a strong influence on demographic processes. Using pre-industrial rural Estonia as an example, the article studies fertility response to short-term economic stress in a manorial society in eastern Europe. It considers whether the fertility response to rye price fluctuations was deliberate and whether it was socially differentiated. It appears that an increase in the price of rye resulted in the drop of conceptions within the next year and the magnitude of the impact on fertility was roughly similar to that in several other European settings in the 19th century. As long as the manorial system was maintained, farmers were more sensitive to price hikes than the landless, but with the decline of the mutual economic dependence between manors and farms, the landless laborers became more vulnerable to price increases. Our analysis of the timing of the fertility response reveals no deliberate postponement of conceptions immediately before or after the low harvests or price increases. Instead, conceptions dropped only in the spring and summer season of the next year, indicating a non-deliberate and spontaneous response.
在前工业化时代,不断变化的经济条件对人口进程产生了强烈的影响。本文以工业化前的爱沙尼亚农村为例,研究了东欧庄园社会中生育率对短期经济压力的反应。它考虑了生育对黑麦价格波动的反应是否是有意的,以及这种反应是否存在社会差异。看来,黑麦价格的上涨导致了第二年受孕率的下降,其对生育率的影响程度与19世纪其他几个欧洲国家的情况大致相似。在庄园制度存在的情况下,农民比无地劳动者对价格上涨更为敏感,但随着庄园与农场之间相互经济依赖性的下降,无地劳动者对价格上涨的抵抗力也随之下降。我们对生育反应时间的分析表明,在低收成或价格上涨之前或之后,没有人故意推迟受孕。相反,只有在第二年的春季和夏季,怀孕率才下降,这表明这是一种无意识的、自发的反应。
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引用次数: 0
World War II service and the GI Bill: New evidence on selection and veterans’ outcomes from linked census records 第二次世界大战服务和退伍军人法案:来自相关人口普查记录的选择和退伍军人结果的新证据
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2024-12-13 DOI: 10.1016/j.eeh.2024.101649
William J. Collins , Ariell Zimran
We examine new datasets of records linked between the 1940 and 1950 US censuses to characterize selection into military service during World War II and to analyze differences in veterans’ post-war educational and labor market outcomes relative to nonveterans. Motivated by potentially disparate selection into and effects of service, we pay particular attention to groups distinguished by age, pre-war educational attainment, race, and nativity. We find that veterans were positively selected on pre-war educational attainment, but negatively or neutrally selected in terms of own or fathers’ pre-war labor market characteristics. Younger veterans fared better in terms of education and labor market outcomes in 1950 than nonveterans who were observationally similar in 1940. Older veterans exhibited relative gains in education compared to observationally similar nonveterans, but not in labor market outcomes. Black veterans’ relative gains in education were large, but black veterans not in school were less likely to be employed than observationally similar nonveterans in 1950. All groups of veterans were more likely to be government employees after the war and were under-represented in self employment.
我们研究了1940年至1950年美国人口普查之间的新数据集,以描述二战期间服兵役的特征,并分析了退伍军人战后教育和劳动力市场结果与非退伍军人的差异。出于对服务的潜在不同选择和影响的动机,我们特别关注按年龄、战前教育程度、种族和出生地区分的群体。我们发现退伍军人在战前教育程度上被正面选择,但在自己或父亲的战前劳动力市场特征上被负面或中性选择。1950年,年轻的退伍军人在教育和劳动力市场上的表现比1940年观察到的相似的非退伍军人要好。与观察到的类似的非退伍军人相比,年龄较大的退伍军人在教育方面表现出相对的优势,但在劳动力市场的结果方面却没有。黑人退伍军人在教育方面的相对收益很大,但1950年,未上过学的黑人退伍军人就业的可能性低于观察到的类似的非退伍军人。所有的退伍军人群体都更有可能在战后成为政府雇员,而在自营职业中所占的比例不足。
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引用次数: 0
The Aftermath of the February Flood of 1825: Social and Demographic Change in the Krummhörn Region, East Frisia 1825 年二月洪灾的后果:东弗里斯兰克鲁姆霍恩地区的社会和人口变化
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2024-12-15 DOI: 10.1016/j.eeh.2024.101650
Kai P. Willführ , Josep Sottile Perez
In February 1825, the dikes broke after a spring tide in the Krummhörn region in East Frisia, Germany, causing a severe disaster. Although the flood did not claim many victims, substantial damage was done to the farmland, and the economic crisis that followed permanently changed the social structure in the Krummhörn. We study family reconstitutions of the region linked to information about socioeconomic status, detailed reports of the flood damage, and information on crop prices for the entire study period. We innovate on the literature through our reconstruction of property damage at the parish level, as well as of the economic development in the region, combined with family reconstitutions. We investigate the short-term impact of the flood on marital fertility and child mortality, as well as the long-term impact on age at first childbirth and age at first marriage of individuals who experienced the flood early in life. We use Cox proportional hazard models to study mortality. The timing and the likelihood of transitions are investigated with the help of mixed parametric cure models. We find that child mortality, but not infant mortality, increased in the flood aftermath, but that this increase in mortality was not attributable to the flood-related damage. Furthermore, we find no evidence of changes in the timing of first childbirth or marriage among the affected individuals. These findings contrast with the results of several other studies indicating that external shocks and crisis experience early in life affect life course outcomes.
1825年2月,德国东弗里斯兰Krummhörn地区的堤坝在一次大潮后决堤,造成了一场严重的灾难。虽然洪水没有造成很多伤亡,但对农田造成了严重破坏,随之而来的经济危机永久性地改变了Krummhörn的社会结构。在整个研究期间,我们将该地区的家庭重建与社会经济地位信息、洪水损害的详细报告和作物价格信息联系起来。我们通过重建教区一级的财产损失,以及该地区的经济发展,结合家庭重建,在文学上进行创新。我们调查了洪水对婚姻生育率和儿童死亡率的短期影响,以及对早期经历洪水的个体的第一次生育年龄和第一次结婚年龄的长期影响。我们使用Cox比例风险模型来研究死亡率。在混合参数模型的帮助下,研究了过渡的时间和可能性。我们发现,儿童死亡率,而不是婴儿死亡率,在洪水过后有所增加,但这种死亡率的增加并不能归因于洪水相关的损害。此外,在受影响的个体中,我们没有发现第一次分娩或结婚时间发生变化的证据。这些发现与其他几项研究的结果形成对比,这些研究表明,生命早期的外部冲击和危机经历会影响生命历程的结果。
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引用次数: 0
The political effects of the 1918 influenza pandemic in Weimar Germany 1918年德国魏玛流感大流行的政治影响
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2024-12-18 DOI: 10.1016/j.eeh.2024.101648
Stefan Bauernschuster , Matthias Blum , Erik Hornung , Christoph Koenig
How did the 1918 Influenza pandemic affect elections in Weimar Germany? We combine a panel of election results (1893–1933) with spatial heterogeneity in excess flu mortality to assess the pandemic’s effect on voting behavior across constituencies. Applying a dynamic differences-in-differences approach, we find that areas with higher influenza mortality saw a lasting shift towards leftwing parties. We argue that pandemic intensity increased the salience of public health policy, prompting voters to reward parties signaling competence in health issues. Alternative explanations such as pandemic-induced economic hardship, punishment of incumbents, or political polarization are not supported by our findings.
1918年流感大流行如何影响魏玛德国的选举?我们将一组选举结果(1893-1933)与流感死亡率的空间异质性相结合,以评估流感大流行对各选区投票行为的影响。采用动态差异中的差异方法,我们发现流感死亡率较高的地区出现了向左翼政党的持续转变。我们认为,大流行的强度增加了公共卫生政策的重要性,促使选民奖励在卫生问题上表现出能力的政党。其他解释,如流行病导致的经济困难,现任者的惩罚或政治两极分化,都没有得到我们的研究结果的支持。
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引用次数: 0
Examining the role of training data for supervised methods of automated record linkage: Lessons for best practice in economic history 考察训练数据在自动记录链接的监督方法中的作用:经济史上最佳实践的教训
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2025-01-30 DOI: 10.1016/j.eeh.2025.101656
James J Feigenbaum , Jonas Helgertz , Joseph Price
During the past decade, scholars have produced a vast amount of research using linked historical individual-level data, shaping and changing our understanding of the past. This linked data revolution has been powered by methodological and computational advances, partly focused on supervised machine-learning methods that rely on training data. The importance of obtaining high-quality training data for the performance of the record linkage algorithm largely, however, remains unknown. This paper comprehensively examines the role of training data, and—by extension—improves our understanding of best practices in supervised methods of probabilistic record linkage. First, we compare the speed and costs of building training data using different methods. Second, we document high rates of conditional accuracy across the training data sets, rates that are especially high when built with access to more information. Third, we show that data constructed by record linking algorithms learning from different training-data-generation methods do not substantially differ in their accuracy, either overall or across demographic groups, though algorithms tend to perform best when their feature space aligns with the features used to build the training data. Lastly, we introduce errors in the training data and find that the examined record linking algorithms are remarkably capable of making accurate links even working with flawed training data.
在过去的十年里,学者们利用相关的历史个人层面的数据进行了大量的研究,塑造和改变了我们对过去的理解。这种关联数据革命是由方法和计算的进步推动的,部分集中在依赖于训练数据的监督机器学习方法上。然而,获取高质量的训练数据对于记录链接算法性能的重要性在很大程度上仍然未知。本文全面考察了训练数据的作用,并通过扩展,提高了我们对概率记录链接的监督方法的最佳实践的理解。首先,我们比较了使用不同方法构建训练数据的速度和成本。其次,我们在训练数据集中记录了很高的条件准确性,当可以访问更多信息时,这一比率尤其高。第三,我们表明,通过从不同的训练数据生成方法学习的记录链接算法构建的数据在总体或跨人口统计组的准确性上没有本质差异,尽管当算法的特征空间与用于构建训练数据的特征一致时,算法往往表现最好。最后,我们引入了训练数据中的错误,并发现所检查的记录链接算法即使在有缺陷的训练数据下也能非常准确地建立链接。
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引用次数: 0
The escape from hunger: The impact of food prices on well-being in Sweden, 1813–1967 摆脱饥饿:1813-1967年瑞典食品价格对幸福的影响
IF 2.6 1区 历史学 Q1 ECONOMICS Pub Date : 2025-04-01 Epub Date: 2024-12-18 DOI: 10.1016/j.eeh.2024.101652
Tommy Bengtsson, Luciana Quaranta
This study analyses how the standard of living for different social groups changed when Sweden developed from an agricultural to an industrial society and when the first steps towards a modern welfare society were taken. As a measure of living standards, we use the ability to overcome short-term economic stress caused by high food prices. We use individual-level longitudinal data from 1813 to 1967 for a rural/semi-urban area in southern Sweden with similar economic development, occupational structure, life expectancy and fertility to the country as a whole. We found that during the first part of the 19th century, when agriculture was reformed and grain became an export product, workers, but not farmers and other social groups, deliberately postponed births in response to rising food prices. Despite these efforts to maintain consumption, workers and their families suffered increased mortality risks during years of high food prices, indicating that they lived close to the subsistence margin and could not save to ensure consumption in bad times. In the second half of the 19th century, rising real wages improved workers’ living conditions and the mortality response to economic stress decreased. By the 20th century, as the economy progressed and welfare systems emerged, the mortality response disappeared entirely. In contrast, childbearing was still affected by economic cycles but now only during turmoil of the First World War and the 1918 influenza pandemic and not afterwards.
本研究分析了当瑞典从农业社会发展到工业社会以及向现代福利社会迈出第一步时,不同社会群体的生活水平是如何变化的。作为衡量生活水平的一项指标,我们利用这种能力来克服高粮价造成的短期经济压力。我们使用了1813年至1967年瑞典南部农村/半城市地区的个人纵向数据,这些地区的经济发展、职业结构、预期寿命和生育率与整个国家相似。我们发现,在19世纪上半叶,当农业改革、粮食成为出口产品时,工人(而不是农民和其他社会群体)故意推迟生育,以应对不断上涨的食品价格。尽管为维持消费作出了这些努力,但在粮食价格高企的年份,工人及其家庭面临的死亡风险增加,这表明他们的生活接近维持生计的边缘,在困难时期无法储蓄以确保消费。19世纪下半叶,实际工资的上涨改善了工人的生活条件,经济压力导致的死亡率下降。到了20世纪,随着经济的发展和福利制度的出现,死亡率的反应完全消失了。相比之下,生育仍然受到经济周期的影响,但现在只是在第一次世界大战和1918年流感大流行的动荡期间,而不是之后。
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引用次数: 0
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Explorations in Economic History
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