This paper introduces a new set of comprehensive and cross-country-comparable indexes of migration policy selectivity. Crucially, these reflect the multidimensional nature of the differential treatment of migrants. We use these indexes to study the evolution of migration policy selectivity and estimate how they affect migration flows. Combining all publicly available and relevant data since WWII, we build three composite indexes that identify selectivity in terms of skills, economic resources and nationality. First, we use these to characterize migration policies in 42 countries between 1990 and 2014. Second, we examine the relationship between the selectivity of migration policy and migration flows. Each of the three dimensions of migration policy is found to correlate strongly and significantly with both the size and structure of migration flows.

Existing empirical literature provides converging evidence that selective emigration enhances human capital accumulation in the world's poorest countries. However, the within-country distribution of such brain gain effects has received limited attention. Focusing on Senegal, we provide evidence that the brain gain mechanism primarily benefits the wealthiest regions that are internationally connected and have better access to education. Conversely, human capital responses are negligible in regions lacking international connectivity, and even negative in better connected regions with inadequate educational opportunities. These results extend to internal migration, implying that highly vulnerable populations are trapped in the least developed areas.

Identifying the impact of remittances on household members remaining behind is difficult due to selection into migration. In this paper, we exploit an unexpected embargo on Qatar, the second major destination among Nepali migrants. Using longitudinal data on about 1,500 Nepali households with migrants prior to the embargo, we assess how this shock translates into changes in remittances and development outcomes. We find a 56% reduction in remittances for households with a migrant in Qatar. At least in the months immediately after the shock, such a fall in remittances does not seem to translate into recipient household's welfare. However, we cannot exclude that such effect might materialize in the medium run. That is particularly true for poor and credit-constrained households, especially vulnerable to the remittance windfall and lacking the ability to move their migrants or other household members to other destinations.

International migration represents a potential channel for the transmission of norms, attitudes, and values back to the home countries. In this paper, we explore how international migration affects tax morale and aversion to the free-riding of members of the household left behind in the home country. We use a rich longitudinal household-level database on Polish society (period 2007–2015) that allows us to observe social attitudes and values of individuals before and after the actual migration of a member of the household. We find that having a migrant in the household has a significant and positive effect on tax morale and increases aversion toward free-riding of stayers. We also find that migrants have a lower level of tax morale before departure compared to stayers, suggesting that international migration leads to an overall gain in pro-social behaviors.

We use novel survey data to assess the impact of the COVID-19 pandemic on internally displaced persons (IDPs) in Libya. Our analysis compares the effects of the pandemic for displaced and non-displaced citizens, controlling for individual and household characteristics and geo-localized measures of economic activity and conflict intensity. In our sample, 9.5% of respondents report that a household member has been infected by COVID-19, while 24.7% of them have suffered economic damages and 14.6% have experienced negative health effects due to the pandemic. IDPs do not display higher incidence of COVID-19 relative to comparable non-displaced individuals, but are about 60% more likely to report negative economic and health impacts caused by the pandemic. We provide suggestive evidence that the larger damages suffered by IDPs can be explained by their weaker economic status—which leads to more food insecurity and indebtedness—and by the discrimination they face in accessing health care.

This study examines disparities in health and nutrition among native and Syrian refugee children in Turkey. To understand the need for targeted programs addressing child well-being among the refugee population, we analyze the Turkey Demographic and Health Survey (TDHS) – which provides representative data for a large refugee and native population. We find no evidence of a difference in infant or child mortality between refugee children born in Turkey and native children. However, refugee infants born in Turkey have lower birthweight and age-adjusted weight and height than native infants. When we account for a rich set of birth and socioeconomic characteristics that display substantial differences between natives and refugees, the gaps in birthweight and age-adjusted height persist, but the gap in age-adjusted weight disappears. Moreover, the remaining gaps in birthweight and anthropometric outcomes are limited to the lower end of the distribution. The observed gaps are even larger for refugee infants born before migrating to Turkey, suggesting that the remaining deficits reflect conditions in the source country before migration rather than deficits in access to health services within Turkey. Finally, comparing children by the country of their first trimester, we find evidence of the detrimental effects of stress exposure during pregnancy.

Following the most dramatic migration episode of the 21st century, Turkey hosted the largest number of Syrian refugees in the world. This paper assesses the impact of the arrival of Syrian refugees on the Turkish children's health, with a focus on height – a standard nutritional outcome. Accounting for the endogenous choice of immigrant location, our results show that Turkish children residing in provinces with a large share of refugees exhibit a significant improvement in their height as compared to those living in provinces with fewer refugees. Against other potential channels, a refugee-induced increase in maternal unemployment and the associated increase in maternal care seem to explain the observed positive effect on children's health.