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In this article, we study the international mobility of researchers in the field of computer science (CS). Our analysis hinges upon Scopus data spanning a time period of 30 years (1991–2020) and involves a total of 969,835 researchers and 8,412,543 publications. Our contribution is two-fold. First, we characterize mobility as a fairly common phenomenon in CS, we highlight a strong correlation with standard bibliometric indicators at all seniority levels and a lower propensity of female researchers to relocate internationally than their male colleagues. Second, we analyze individual career paths building from them a mobility graph and identifying common patterns, such as the most traveled connections between different countries, whether they are equally traversed in both directions and the most frequently visited countries. The temporal evolution of the above patterns within our 30-year time frame is also investigated. The United States emerged as a preferred destination for internationally mobile authors, with strong connections to China (from the early 2000s), Canada, and several prominent European countries, most notably the United Kingdom, Germany, and France.

We quantify how user mobile Internet usage relates to unique characteristics of the mobile Internet. In particular, we focus on examining how the mobile-phone-based content generation behavior of users relates to content usage behavior. The key objective is to analyze whether there is a positive or negative interdependence between the two activities. We use a unique panel data set that consists of individual-level mobile Internet usage data that encompass individual multimedia content generation and usage behavior. We combine this knowledge with data on user calling patterns, such as duration, frequency, and locations from where calls are placed, to construct their social network and to compute their geographical mobility. We build an individual-level simultaneous equation panel data model that controls for the different sources of endogeneity of the social network. We find that there is a negative and statistically significant temporal interdependence between content generation and usage. This finding implies that an increase in content usage in the previous period has a negative impact on content generation in the current period and vice versa. The marginal effect of this interdependence is stronger on content usage (up to 8.7%) than on content generation (up to 4.3%). The extent of geographical mobility of users has a positive effect on their mobile Internet activities. Users more frequently engage in content usage compared to content generation when they are traveling. In addition, the variance of user mobility has a stronger impact on their mobile Internet activities than does the mean. We also find that the social network has a strong positive effect on user behavior in the mobile Internet. These analyses unpack the mechanisms that stimulate user behavior on the mobile Internet. Implications for shaping user mobile Internet usage behavior are discussed. This paper was accepted by Pradeep Chintagunta and Preyas Desai, special issue editors. This paper was accepted by Pradeep Chintagunta and Preyas Desai, special issue editors.

We study the effect of top tax rates on \"superstar\" inventors' international mobility since 1977, using panel data on inventors from the US and European Patent Offices. We exploit the differential impact of changes in top tax rates on inventors of different qualities. Superstar inventors' location choices are significantly affected by top tax rates. In our preferred specification, the elasticity to the net-of-tax rate of the number of domestic superstar inventors is around 0.03, while that of foreign superstar inventors is around 1. These elasticities are larger for inventors in multinational companies. An inventor is less sensitive to taxes in a country if his company performs a higher share of its research there.

Highly skilled workers play a central and starring role in today's knowledge economy. Talented individuals make exceptional direct contributions—including breakthrough innovations and scientific discoveries—and coordinate and guide the actions of many others, propelling the knowledge frontier and spurring economic growth. In this process, the mobility of skilled workers becomes critical to enhancing productivity. Substantial attention has been paid to understanding the worldwide distribution of talent and how global migration flows further tilt the deck. Using newly available data, we first review the landscape of global talent mobility. We next consider the determinants of global talent flows at the individual and firm levels and sketch some important implications. Third, we review the national gatekeepers for skilled migration and broad differences in approaches used to select migrants for admission. Looking forward, the capacity of people, firms, and countries to successfully navigate this tangled web of global talent will be critical to their success.

International movements of scientists and researchers have become more common in the increasingly interconnected global knowledge economy. Geographic mobility is often perceived as a key to academic excellence and career advancement by scholars, especially in advanced economies. In China, where international geographical mobility is a newly-gained privilege after the advent of the Open Door Policy, academics belong to one of the most mobile subsets of the population. This paper interrogates the impact of academic mobility at the individual level among Chinese scholars who have conducted research visits in Germany. Specifically, the paper operationalises the equivocal notion of personal development with the concepts of capital accumulation and conversion (after Pierre Bourdieu). Drawing upon findings from 64 in-depth interviews with Chinese scholars of postdoctoral level or above and six key informants, and a postal survey (123 Chinese scholars with mobility biography to Germany), this paper illustrates how geographical mobility can be conceptualised as a form of capital that can be accumulated and converted to cultural, social, economic and symbolic capital. While geographical mobility is predominantly considered as a capital for positive self- and professional development, examples also demonstrate the potential detrimental effect on social capital, especially among young Chinese scholars. Using an agent-centred approach, this paper argues against a mechanical translation of geographical mobility to capital accumulation, but for a grounded understanding of the highly individualised and contextualised development processes.

Aspirations have been a key target of education policy, situated as central to meeting the needs of the ‘knowledge economy’. In the UK, there have been calls to raise young people’s aspirations for careers in the creative industries—identified as emblematic of the new economic order and a key growth sector. Yet, the sector is socially and spatially restricted, characterised by unclear entry routes, exclusionary working practices and uneven geographical concentration. This paper draws on research with young people (aged 14–16 years) living in three urban areas of deindustrialisation in England to examine the geography of young people’s aspirations for careers in the creative industries. The concept of place-specific habitus is used to problematise asocial and aspatial discourses of aspiration and to illuminate how social class and place powerfully and complexly interrelate to shape young people’s opportunities for social and geographical mobility through and for work in the knowledge economy.

We present new evidence on the evolution of labor mobility in the United States over the past four decades. Building on the seminal methodology by Blanchard and Katz (1992), combined with multiple sources of regional population and migration data, we show that interstate mobility in response to relative labor demand conditions is not as high as previously established and has been weakening since the early 1990s. In addition, we find that mobility is countercyclical: net migration across regions responds more strongly to spatial disparities in recessions than in normal times. While the declining trend in mobility has been driven by weaker out-migration from states experiencing negative relative shocks, the mobility surge in recessions is mostly accounted for by temporarily stronger in-migration to better-performing states.

This article elaborates a conceptual framework for assessing the character and effectiveness of immigration policies. It argues that, to a considerable extent, the public and academic controversy concerning this issue is spurious because of fuzzy definitions of policy effectiveness, stemming from confusion between (1) policy discourses, (2) policies on paper, (3) policy implementation, and (4) policy impacts. The article distinguishes three policy gaps: the discrepancy between public discourses and policies on paper (discursive gap); the disparity between policies on paper and implemented policies (implementation gap); and the extent to which implemented policies affect migration (efficacy gap). Although implemented policies seem to be the correct yardstick to assess policy effectiveness, in practice the (generally more pronounced) discourses are often used as a benchmark. This can lead to an overestimation of policy failure. Existing empirical studies suggest that policies significantly affect the targeted migration flows, but they crucially fail to assess the relative importance of policies in comparison to other migration determinants, including non-migration policies, as well as the hypothetical occurrence of unintended categorical, spatial, inter-temporal, and reverse flow \"substitution\" effects. Evidence on such effects is still scarce, showing the need for more empirically informed insights about the short- and long-term effects of migration policies.

In this article, we review the internal geographic mobility of immigrants and natives in the United States in the recent decades, with a focus on the period since 2000. We confirm a continuing secular decline in mobility already pointed out by the existing literature, and we show that it persisted in the post great recession period. We then focus on foreign-born and establish that, on average, they did not have total mobility rates higher than that of natives. However, their mobility response to local economic conditions was stronger than the response of natives in the period from 1980 to 2017. A review of recent research reveals that the higher elasticity of mobility of immigrants to economic conditions is a combination of lower sensitivity to local prices, higher propensity to move in the early years after immigration, and strong economic success of cities that were immigrant enclaves in the 1980s.

Does internal migration following natural hazards increase the likelihood of protests in migrant-receiving areas? To address the question, this study first looks at the extent to which experiencing different forms of natural hazards contributes to a household’s decision to leave their district of residence. In a second step, the article explores whether that internal migration flow increases the number of protest events in migrant-hosting districts. In doing so, it contributes to the existing debate on the extent to which natural hazards impact the likelihood of social contention, and the role of migration as a linking pathway in that relationship. The impact of climate-related shocks may erode household assets and therefore adaptive capacity in ways that can eventually influence decisions to migrate to larger urban centres. Although migrants are agents of economical and technological change, urban environments may impose challenges to recently arrived migrants and their host communities, affecting the motivations and mobilization resources of urban social groups to protest. As a consequence, the probability of urban unrest in these locations is expected to increase. To test this, I use geo-referenced household-level data from Bangladesh for the period 2010–15, which records households’ experiences of different forms of natural hazard and internal migration flows, available from the Bangladesh Integrated Household Survey. It combines this with data on protests, derived from the Armed Conflict Location and Event Data. Findings suggest that flood hazards in combination with loss of assets increase the likelihood of internal migration, but unlike other types of domestic mobility, hazard-related migration does not increase the frequency of protests in migrants’ districts of destination.