The emigration of highly skilled people, the so-called brain drain (BD) has prompted a significant amount of literature, and suggestions about consequences of high skilled mobility for sending countries (SCs) are numerous but rather ambiguous. Historically, two major approaches can be distinguished. A negative view of the detrimental consequences for SCs due to the loss of human capital, and hence an increasing inequality among least developed countries (LDCs) and developed (DCs) (SCs and receiving countries (RCs)) characterised the discussion in the 1960s and 1970s. This view was intensified by the end of the 1980s, as the new growth theory stressed the importance of human capital as the main driver of economic growth. Accordingly, the loss of human capital would deprive SCs of a major prerequisite for growth and permanently hamper development. Lately, however, this pessimistic vision of accentuating the disadvantages for growth in SCs has been challenged by a more positive point of view. Expatriates are not seen as a loss anymore but instead as a resource which can be employed in favour of the SC. Rather pragmatically, this transnational view admits that, as long as incentives such as inequalities in many areas persist, highly skilled migrants cannot be hindered from moving. Therefore, newer theories focus on the advantages that SCs can draw from linking to their diaspora. Indeed, following this theory, SCs can seize numerous opportunities to manage international migration to offset its inevitable disadvantages, thus effectively turning the brain drain into a brain gain.
It will be the aim of this paper to analyse whether the more recent view of international mobility of highly skilled workers can really countervail the concerns typical of the more traditional view. Will the LDCs be able to benefit from their expatriate HC or will migration enlarge disparities between SCs and RCs and consequently increase emigration even further? To address this question the following parts will give an overview on migration flows, present the underlying theories of the different approaches and assess existing empirical findings on the impact of the BD. Finally, policy implications will be outlined before concluding the paper.
Table of Contents
0 Introduction
1 Trends in International Migration
2 General Theories of International Migration
2.1 Microeconomic Approaches
2.2 Macroeconomic Approaches
3 Theories of International Highly Skilled Labour Migration
3.1 Dynamics of Highly Skilled Labour Migration
3.1.1 The Case of Highly Skilled Migrants
3.1.2 Critical Mass Dynamics
3.2 Effects of the Brain Drain – The Traditional View
3.2.1 Static Effects
3.2.2 Dynamic Effects
3.2.2.1 Effects on Development
3.2.2.2 Effects on Growth
3.3 Effects of the Brain Drain – Recent Developments
3.3.1 The Optimal Brain Drain
3.3.2 The Feedback Effects
3.3.2.1 The Diaspora
3.3.2.2 Remittances
3.3.2.3 Return
3.3.2.4 Technology Transfer
4 How Big is the Brain Drain - Empirical Evidence
5 Effects of the Brain Drain: The Empirical Analysis
5.1 Critical Mass
5.2 Static Effects
5.3 The Optimal Brain Drain
5.4 The Feedback Effects
5.4.1 The Diaspora
5.4.2 Remittances
5.4.3 Return
5.4.4 Technology Transfer
6 Policy Responses to High Skilled Migration
6.1 Immigration Policies
6.2 Mobilising the Diaspora
6.3 Retention
7 Conclusion
Research Objectives and Key Themes
This paper examines the impact of high-skilled labour migration, known as the "brain drain" (BD), on labour-exporting, less-developed countries (LDCs). The primary objective is to evaluate whether the recent "brain gain" view—which highlights potential benefits such as remittances, diaspora networks, and knowledge transfer—can effectively counteract the traditional, pessimistic view that emphasizes the detrimental consequences of losing human capital.
- Theoretical perspectives on international migration and the brain drain.
- The dynamics and empirical scale of high-skilled emigration from LDCs.
- The economic consequences, including impacts on growth, development, and inequality.
- Feedback mechanisms and their role in transforming brain drain into brain gain.
- Policy responses and strategies for LDCs to leverage high-skilled migration for development.
Excerpt from the Book
3.1.2 Critical Mass Dynamics
The idea that once a country reaches a certain critical mass of HS workers their emigration incentives are reduced has its roots in the initial BD debate of the 60s. This debate saw a confrontation between the internationalist model – HS migration resulting in global convergence of economies – and the nationalist model, emphasising the importance of a minimal critical mass of HC for the ability of a country to improve economically.14 Ellerman (2003) summarised this concept in a model of dynamic divergence represented in figure 1: The x-axis depicts the percentage of scientists who remain in the home country; the y-axis depicts the percentage of scientists who consider the respective x% of fellow scientists remaining incentive enough to also stay in the country. Accordingly, there is a positive correlation between x and y. A reaction function in which expectations about the percentage of scientists staying coincide with their actual number is thereby depicted by the upward sloping 45° line.15
Above the critical mass C, dynamics work towards a virtuous circle resulting in the high-level equilibrium B where a high percentage of HS labour staying in the country increases the incentives for other scientists not to leave the country. Below C, dynamics of disagglomeration will lead to a vicious circle resulting in the low-equilibrium A, with a steadily increasing number of emigrating scientists. However, another dynamic could plausibly create a different kind of equilibrium. A “room for more” dynamic could dominate the low levels and a “dynamic of congestion” could dominate at the higher levels so that there could be a single stable equilibrium in between, at C.
Summary of Chapters
0 Introduction: Introduces the topic of high-skilled labor migration and the evolving academic debate between the "traditional" negative view and the "recent" positive "brain gain" perspective.
1 Trends in International Migration: Provides an overview of global migration flows and identifies the prominent South-North pattern of movement.
2 General Theories of International Migration: Covers fundamental microeconomic and macroeconomic theories that explain the drivers and mechanisms of international labor mobility.
3 Theories of International Highly Skilled Labour Migration: Discusses the dynamics of high-skilled migration, including the "critical mass" theory, traditional consequences, and the feedback effects that suggest potential benefits for sending countries.
4 How Big is the Brain Drain - Empirical Evidence: Evaluates the empirical scale of the brain drain using existing data sets and highlights the difficulty of measurement due to data gaps.
5 Effects of the Brain Drain: The Empirical Analysis: Tests theoretical predictions against empirical data regarding critical mass, static income effects, the "optimal brain drain," and various feedback mechanisms.
6 Policy Responses to High Skilled Migration: Examines policy frameworks, including immigration policies, diaspora engagement, and retention strategies, aimed at maximizing the development potential for sending countries.
7 Conclusion: Summarizes the main findings, suggesting that the brain drain's negative impact has likely been overstated and that targeted policies can foster development through "brain gain" channels.
Keywords
Brain Drain, Brain Gain, Highly Skilled Migration, Human Capital, Developing Countries, Remittances, Diaspora, Economic Growth, Knowledge Transfer, Migration Policy, Critical Mass, Labour Markets, Development, Feedback Effects, International Migration.
Frequently Asked Questions
What is the primary focus of this research?
The research focuses on the economic consequences of high-skilled labor migration from less-developed countries (LDCs) to developed countries, exploring whether these movements represent a "brain drain" or a potential "brain gain."
Which theoretical perspectives are compared in the work?
The work contrasts the "traditional" view, which perceives the loss of human capital as inherently detrimental to sending countries, with a "recent" transnational perspective that sees migration as a source of potential gains through diaspora linkages.
What is the core research question?
The central question is whether the recent positive view of high-skilled mobility can sufficiently countervail the traditional concerns of losing human capital, or if migration ultimately exacerbates existing economic disparities.
What methodology is used to evaluate the brain drain?
The research combines an overview of established theoretical frameworks with an empirical analysis of available data to assess the real-world magnitude and impacts of high-skilled emigration.
How is the "feedback effect" explained in the context of the brain drain?
Feedback effects refer to the mechanisms—such as financial remittances, the eventual return of migrants, technology transfers, and the influence of diaspora networks—that allow sending countries to benefit from their expatriate workers.
Which keywords best characterize this study?
Key terms include Brain Drain, Brain Gain, Human Capital, Diaspora, Remittances, and International Migration Policy.
How does the concept of "critical mass" apply to scientists in developing countries?
Critical mass refers to the necessity of having a sufficient number of researchers within a country to maintain productive scientific facilities; below this threshold, countries risk becoming scientific "desert regions" with accelerated emigration.
What does the empirical data suggest regarding the magnitude of the brain drain?
The empirical analysis concludes that the brain drain is limited to a small number of countries and that the overall damage has likely been overstated, as many countries see their loss of human capital at least partially compensated by brain gain mechanisms.
- Quote paper
- Johanna Avato (Author), 2004, Highly skilled labour migration: Consequences for labour exporting countries, Munich, GRIN Verlag, https://www.grin.com/document/45163
