The studies of descriptive political representation demonstrate that the share of women amongst local elected officials increases, but mayors are still predominantly men. This paper contributes to the literature on the link between the descriptive and substantive representation of women at the local level. It investigates the influence of mayors’ gender on the development of local childcare policies in Poland. We employ quasi-experimental research schemes (difference-in-differences and generalised synthetic control) to study changes in childcare provision and public spending on nurseries and kindergartens. We merged electoral data (changes on the mayoral position) and registry data on local budget expenditures and service availability covering a period of more than 16 years. We do not find any systematic causal link, suggested by the extant literature on substantive representation, between the election of a female mayor and the expansion of childcare services.

With the green, circular, and low-carbon concept, eco-industrial parks are regarded as key drivers for maximizing environmental and economic benefits. Based on the panel data of 276 cities in China from 2007 to 2018, this paper regards the establishment of eco-industrial parks as a quasi-natural experiment, and employs the difference-in-differences method to test the impact of eco-industrial parks on urban haze pollution. We find that eco-industrial parks significantly reduce urban haze pollution and the conclusion holds with robustness tests. Heterogeneity analysis shows that the effect of eco-industrial parks on haze pollution is more pronounced in eastern and resource-based cities. Finally, mechanism analysis indicates that eco-industrial parks reduce urban haze pollution mainly by promoting technological innovation, upgrading industrial structure, and strengthening urban environmental regulations.

The literature has shown that, in developing countries, large cash transfers to older people improve the wellbeing of the recipients and their families. While social pensions have recently emerged in East Asia to deliver small cash benefits to older people, there is little consistent evidence of their effects. We examine the effects of the Basic Pension Scheme, a social pension in South Korea, on income and consumption poverty among older adults. We apply a difference-in-differences event study design and other complementary approaches to data covering the full period of program development from 2006 to 2021. The results show that the social pension decreases income poverty but not consumption poverty. While this study analysed the best data currently available, using better-quality data in future research would enable more robust analysis. Further research is also warranted to find how to improve the effectiveness of a non-contributory pension programme as a tool for reducing income and consumption poverty among older adults.

This study examines the impact of county-level immigration enforcement of section 287(g) mandates on the number of businesses in the United States. Using the difference-in-differences model, we find that the implementation of 287(g) negatively affected the total number of businesses. We find that counties with 287(g) agreements experienced a 6 percent decrease in the total number of businesses per 1000 county population and this negative effect appeared to be more prominent in businesses with a higher number of employees. Our findings shed light on the complex impacts of immigration policies on businesses, especially those reliant on immigrant labor.

Scholars, policymakers, and citizens alike remain invested in the impact of infectious diseases worldwide. Studies have found that emerging diseases and disease outbreaks burden global economies and public health goals. This article explores the potential link between measles outbreaks and various forms of civil unrest, such as demonstrations, riots, strikes, and other anti-government violence, in four central African countries from 1996 to 2005. Using a difference-in-differences model, we examine whether disease outbreaks have a discernible impact on the prevalence of civil unrest. While our findings indicate that the relationship between disease and civil unrest is not as strong as previously suggested, we identify a notable trend that warrants further investigation. These results have significant implications for health and policy officials in understanding the complex interplay between state fragility, civil unrest, and the spread of disease.

The contemporary Republican Party has been the site of asymmetric partisan entrenchment and factional infighting. We test whether factional pressure from a far-right faction (the Tea Party) exacerbated the party's rightward movement with a granular analysis of Republican factionalism at the congressional district level. We develop a measure of local factionalism using novel datasets of activist presence and primary contests. Then, we conduct a difference-in-differences analysis to assess whether local factionalism in the Tea Party era heightened Republican partisanship and legislative extremism at the district level. We find that districts that experienced factional pressure moved rightward on both measures. These findings help clarify how the Tea Party captured the Republican Party and support a focus on the role of party factions in fomenting partisan conflict.

The Affordable Care Act (ACA) was intended to reduce inequalities in access to healthcare resources. However, a 2012 Supreme Court decision allowed states to opt out of a key component of the policy, leading to even greater variation in Medicaid’s implementation. Using this variation, we estimate the effect of the ACA Medicaid expansion and racial dynamics on federal Medicaid-CHIP transfers received by states at the county level. To do so, we use a difference-in-differences specification and allow the expansion effect to vary across counties with different population shares of Black Americans. We find that Medicaid expansion increases the funds that are sent to counties, but additional analyses show that the racial demographics of a county also serve to influence how federal resources are apportioned. Specifically, the analyses reveal a curvilinear relationship between the proportion of Black residents and the dispersal of funds.

To alleviate the imbalance in demographics, the Chinese government initiated the universal two-child policy nationwide in 2016, which has comprehensively impacted society, especially females. Our study investigates whether this policy has negatively affected workforce employment and income among women in urban areas. Based on the DID (difference-in-differences) method and the Heckman Two-Step Estimation, reliable empirical evidence shows that the universal two-child policy has significantly reduced women’s employment by 4.06% and decreased their labour income by 10.43%. Surprisingly, this policy has decreased the employment among women under 25 years old by 23.99% and has reduced the income of higher educated females by 29.59%. Furthermore, we find that the influence of the universal two-child policy on female employment has gradually increased from 2016 to 2018, and its impact on income has presented an evident time lag.

The onset of the COVID-19 pandemic constituted a large shock to the risk of acquiring a disease that represents a meaningful threat to health. We investigate whether individuals subject to larger increases in objective health risk – operationalized by occupation-based measures of proximity to other people – became more supportive of increased government healthcare spending during the crisis. Using panel data that track UK individuals before (May 2018–December 2019) and after (June 2020) the outbreak of the pandemic, we implement a fixed-effect design that was pre-registered before the key treatment variable was available to us. While individuals in high-risk occupations were more worried about their personal risk of infection and had higher COVID-19 death rates, there is no evidence that increased health risks during COVID-19 shifted either attitudes on government spending on healthcare or broader attitudes relating to redistribution. Our findings are consistent with recent research demonstrating the limited effects of the pandemic on political attitudes.