Holding back from theory: limits and methodological alternatives of randomized field experiments in development economics

ABSTRACT

In this paper, we critically and constructively examine the methodology of evidence-based development economics, which deploys randomized field experiments (RFEs) as its main tool. We describe the context in which this movement started, and illustrate in detail how RFEs are designed and implemented in practice, drawing on a series of experiments by Pascaline Dupas and her colleagues on the use of bednets, saving and governance in Kenya. We show that this line of experiments have evolved to address the limitation of obtaining policy-relevant insights from RFEs alone, characterized as their lack of external validity in the literature. After examining the two prominent responses by leading figures of evidence-based development economics, namely machine learning and structured speculation, we propose an alternative methodological strategy that incorporates two sub-fields, namely experimental economics and behavioral economics, to complement RFEs in investigating the data-generating process underlying the treatment effects of RFEs. This strategy highlights promising methodological developments in RFEs neither captured by the two proposals nor recognized by methodologists, and also guides how to combine different sub-fields of economics.     

The economist’s oath: a review Essay

George DeMartino’s 2011 monograph, The Economist’s Oath: On the Need for and Content of Professional Economic Ethics, provides an excellent basis for the development of a discourse on the ethics of economists. This review focuses on the way in which mainstream economists’ arguments against consideration of ethics follow from their presentation of economics as a purely technical subject, and the implication that this pretense itself is unethical. The complexity of ethical issues within a pluralist approach to economics is explored, ranging from the institutional environment within which economists practice to epistemological questions.     

从自然资源经济学到可持续经济学

随着物质生活水平的快速提高,人类也面临着诸如森林退化、土地荒漠化、物种多样性丧失以及温室效应恶化等生存环境问题。可持续发展问题日益受到人们的关注,通过经济学的视角来研究可持续发展的可持续经济学得到了快速的发展。本文从经济学的角度界定了自然资源的概念,回顾了经济学对自然资源的研究历程,对自然资源经济学的起源、发展进行了评述;论证了自然资源经济学和可持续经济学的关系,指出在可持续发展问题研究中融合自然资源经济学和环境经济学的必然性,以自然资源经济学和环境经济学为重要元素的可持续经济学是可持续问题经济研究的高级阶段,文章进一步探讨了可持续经济学的分析框架、发展现状及存在的问题。     

“双一流”建设与经济学发展的中国贡献?

作为社会科学的“皇冠”,经济学的学科建设在中国“双一流”建设中,尤其在世界一流学科建设中具有重要意义,也将对中国全面深化改革以实现国家治理现代化提供重要的现实指导。文章首先分析了世界一流经济学科建设之于“双一流”战略导向的契合度,然后探讨了中国的世界一流经济学科建设所面临的难点及其突破点,进而阐述了中国可从哪些方面为经济学的发展和创新做出贡献。研究认为,打造中国的世界一流经济学科需要按照国际同行学术标准进行评价,所研究的问题(包括中国问题)应该是国际同行关注的问题,从而需要从完善学科分类评价体系、加强原创性研究和高层次人才集聚等方面加以突破。与此同时,针对经济学在中国的发展和创新,研究指出,对于中国传统经济思想的历史禀赋和现代价值的挖掘、具有原创性的理论研究和方法论研究创新以及基于中国经济改革发展实践的理论提炼升华,是中国经济学界可以且应该做出重要贡献的三个方向。     

Evolution-Based Approaches in Economics and Evolutionary Loss of Information

Evolutionary economics provides a self-organizing, stabilizing mechanism without relying on mechanic equilibria. However, there are substantial differences between the genetic evolutionary biology and the evolution of institutions, firms, routines, or strategies in economics. Most importantly, there is no genetic codification and no sexual reproduction in economic evolution, and the involved agents can interfere consciously and purposefully. This entails a general lack of fixation and a quick loss of information through a Muller’s ratchet-like mechanism. The present contribution discusses the analogy of evolution in biology and economics, and considers potential problems resulting in evolutionary models in economics.     

‘On the Econ within’: a reply to Daniel Hausman

This note replies to a comment by Daniel Hausman on our paper ‘Preference purification and the inner rational agent: a critique of the conventional wisdom of behavioural welfare economics’. We clarify our characterisation of behavioural welfare economics and acknowledge that Hausman does fully endorse this approach. However, we argue that Hausman’s response to our critique, like behavioural welfare economics itself, implicitly uses a model of an inner rational agent.     

The Washington Consensus revisited: a new structural economics perspective

The Washington Consensus reform resulted in economic collapse and stagnation in many transition economies and “lost decades” in other developing countries in 1980s and 1990s. The paper provides a new structural economics perspective of such failures. The Washington Consensus reform failed to recognize that many firms in a transition economy were not viable in an open, competitive market because those industries went against the comparative advantages determined by the economy’s endowment structure. Their survival relied on the government’s protections and subsidies through various interventions and distortions. The Washington Consensus advised the government to focus their reforms on issues related to property rights, corporate governance, government interventions, and other issues that may obstruct a firm’s normal management. Without resolving the firms’ viability problem, such reforms led to the firms’ collapse and an unintended decline and stagnation of the economy in the transition process. This paper suggests that the viability assumption in neoclassical economics be relaxed when analyzing development and transition issues in socialist, transition, and developing economies.     

发展经济学方法论初析

发展经济学逻辑体系的松散使得这门学科在面对发展中国家现实和理论发展时,必须对其方法的何去何从作出选择.本文从发展经济学方法的古典基础、建立与发展以及新趋势等几个方面,对发展经济学方法论作了初步的探讨,认为未来的发展经济学方法需要打破传统经济学界限,并考察历史、政治学、社会学、伦理学和制度等.     

Economics of soft innovation: a review article

This article identifies and articulates the foundations of the theoretical approach of the new book ‘Soft innovation: Economics, product aesthetics and the creative industries’ by Professor Paul Stoneman. This book is likely to open a new research area within the economics of innovation. The source of economic growth and prosperity is technological change and the economics of innovation to date has mainly focused on technological approaches to innovation. However, the development of the technological base of product and process can explain only a part of economic growth as soft innovation represents a relevant additional source of economic development that has received little attention so far. The source of a unified economic approach for soft innovation relies on Lancaster's theory of consumer behaviour coupled with the variety approach, innovation in services and the economics of knowledge. It appears as though industry structures favouring the successive emergence of new variants are characterised by soft innovations.     

Using Field Experiments to Change the Template of How We Teach Economics

In this article, the author explains why field experiments can improve what we teach and how we teach economics. Economists no longer operate as passive observers of economic phenomena. Instead, they participate actively in the research process by collecting data from field experiments to investigate the economics of everyday life. This change can be shown to students by presenting them with evidence from field experiments. Field experiments related to factor markets, behavioral economics, and discrimination are presented to explain how this approach works across different economic content. The three questions that are highlighted are the following: (1) Why do women get paid less than men in labor markets? (2) How can we use behavioral economics to motivate teachers? (3) What seven words can end third-degree price discrimination?     

Gordon Tullock and the Virginia School of Law and Economics

In 1999 Gordon Tullock became Professor at the George Mason University Law School. Tullock’s arrival at George Mason brought the economics department and the law school close together. The work that resulted during those years consolidated the methodological foundations for a different way of thinking about the economic analysis of law—the “functional” approach to law and economics. The functional law and economics approach espoused by the Virginia School was not attacking any of the results of the Chicago School or the Yale School, but rather proposing a methodological shift. This paper presents some of the results developed by this school and illustrates Tullock’s controversial positions on trials and on the common law system, through anecdotes, Tullock’s own work and related scholarly contributions.     

Economic Institutions and the Satisfaction of Human Needs

This article examines John Kenneth Galbraith’s contributions to the field of economic development. Galbraith’s works on economic development were numerous, but they remain largely ignored by his critics and fans alike. He approached the economic development problem with a keen understanding of both the economic and political forces shaping the development debate. Galbraith’s contributions to development economics were always focused on how to get the job done. Doing so required different strategies in an exceedingly diverse community of nations. His work remains relevant. The literature is only now beginning to recognize that this holistic approach to development is a necessary alternative to single-causation theories of world poverty. Galbraith’s approach to development problems is consistent with (and perhaps inspired by) original institutional economics (OIE) in the tradition of Thorstein Veblen and Clarence Ayres.     

Richard H. Thaler: A Nobel Prize for Behavioural Economics

ABSTRACT

This paper provides an overview of Richard Thaler’s career and the contributions to behavioural economics that earned him the 2017 Nobel Memorial Prize in Economic Sciences. It focuses on his role in exposing and making sense of empirical anomalies in orthodox economics, his analysis of mental accounting, and his work with Cass Sunstein on the notion of libertarian paternalism and the ‘nudge’-based behavioural approach to economic policy. It then considers his contributions critically and explores how, unlike previous behavioural economics, Thaler succeeded in getting his new approach to behavioural economics accepted by mainstream economists.     

The New Economics of Labor Migration: Beware of Neoclassicals Bearing Gifts

Abstract

Until the emergence of the New Economics of Labor Migration (NELM) in the 1980s, migration scholars were largely divided into two main theoretical camps, viz. the neoclassical and historical-structural approaches to migration. Against this background, the NELM presented itself as a theoretical ‘third way’ between the two latter approaches, and purported to reconcile agency and structure in a way previously unachieved by either of them. While those pretensions gained a fair amount of acceptance and popularity, this paper argues that they are fundamentally misleading, and that the NELM is little more than a slightly more sophisticated avatar of the neoclassical approach to migration, whose fundamental weaknesses it has not, and cannot, shed. This paper further argues that, in so doing, the NELM effectively constitutes migration theory's own instance of economics imperialism, i.e. the attempt to advance the fundamental tenets of neoclassical economics (methodological individualism and the assumption of optimizing rationality) within the context of the study and interpretation of various social phenomena. In order to put forth these arguments, this paper provides a summary presentation of the standard neoclassical theory of migration, the historical-structural heterodoxy and the NELM; highlights why it is that the NELM should be regarded as a ‘reworked’ version of the neoclassical theoretical framework and discusses its inception in the context of the ‘information-theoretic revolution’ in economics; and argues for a new and improved ‘historical-structural synthesis’ as a more satisfactory alternative to both the NELM and the standard neoclassical theory.     

Social Control of Corporate Power: Comment

Economic activity takes place within an institutional framework. The economy, like society, represents a complex of institutions, ranging from the smallest, such as the family, to the largest and most comprehensive, the state (Chavance 2009). Institutional economics offers a broad perspective that brings forward the concept of gender, since gender is a fundamental organizing principle of institutions (Jacobsen 2003). A focus on social provisioning, typical for both feminist as well as institutional economists, leads to a broader understanding of economic activity. This broader approach includes activities like caring and care labor that cannot be entirely understood in terms of individual choices. In this paper, I explore the relationships between care and the economy from the perspective of neoclassical, institutional, and feminist economic theory. Economic theories are a basis for public policies that have a major impact on people’s lives. I argue that changing the dominating economic perspective into feminist-institutional one would improve the situation of care providers, who would, in turn, contribute to the development of society and the economy.     

Banerjee,Duflo, Kremer,and the Rise of Modern Development Economics*

In 2019, Abhijit Banerjee, Esther Duflo, and Michael Kremer received the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel. These three scholars were recognized “for their experimental approach to alleviating global poverty”. This paper reviews the contributions of these three scholars in the field of development economics, to put this contribution in perspective. I highlight how the experimental approach helped to break down the challenges of understanding economic development into a number of component pieces, and I contrast this to understanding development using macroeconomic aggregates. I discuss pioneering contributions in understanding the challenges of education, service delivery, and credit markets in developing countries, as well as how the experimental approach has spread to virtually all aspects of development economics.     

Social Surplus Approach and Heterodox Economics

Given the emphasis on social provisioning in heterodox economics, two of its central theoretical organizing principles are the concepts of the total social product and the social surplus. This appears to link heterodox economics to the social surplus approach associated with the classical economists and currently with Sraffian economists. However, heterodox economics connects agency with the social surplus and the social product, which the Sraffians reject as they take the level and composition of the social product as given. Therefore the different theoretical approach regarding the social surplus taken in heterodox economics may generate a different but similar way of theorizing about a capitalist economy. To explore this difference is the aim of the article.     

中国特色社会主义经济学的时代篇章——新时期中国共产党对马克思主义经济学的创新

本文从马克思主义经济学的理论创新、马克思主义经济学对象和方法的创新、马克思经济学体系的创新三个方面论述了中国特色社会主义经济学的形成和发展。作者认为,中国特色社会主义经济学是揭示中国社会主义初级阶段经济关系的本质及其发展规律的经济科学。构成这一经济科学的一系列理论观点,从经济制度理论到经济体制理论,再到经济发展理论,再到对外开放理论,是这一经济体系的主导理论。这些主导理论的相互联系、相互依存,构成一个有机整体;这些主导理论的相互结合、相互作用,生成其他一系列衍生性的理论。主导理论和衍生性的理论结合在一起,共同构成了中国特色社会主义经济学的理论体系。     

《财经研究》六十年大数据分析：中国经济学期刊发展的特点与趋势?

《财经研究》60年的命运和发展与中国的经济、高等教育、经济学和经济学期刊的发展息息相关。文章基于1956-2015年《财经研究》和其他经济学核心期刊的历史数据,从发文数量、被引频次、发文学科、发文栏目、发文区域、发文机构、发文作者和发文关键词等方面进行了横向与纵向的比较分析,研究发现：中国主要经济学期刊在发文学科、栏目选择和研究主题偏好上存在趋同现象,但各个期刊又都有自身的特色,形成了错位互补的发展态势,《财经研究》的强项是财务与会计、综合和金融等三个栏目,特色是财政分权、制度变迁、对外直接投资和中小企业等方面的研究;中国经济学期刊发展中存在的主要问题是国际化程度不高;中国经济学期刊充分体现了中国经济发展的重大历史命题和阶段性特征,新中国成立以来的众多重大社会经济变革问题都能在期刊中找到理论阐述和政策建议。总之,中国的经济学期刊不仅见证了中国60年的社会变迁和经济发展,而且也为建立中国特色的经济学话语体系做出了贡献。