Knowledge that Transforms

In recent years, there has been widespread interest around the potential for technology to transform learning. As investment in education technology continues to grow, students, parents, and teachers face a seemingly endless array of education technologies from which to choose—from digital personalized learning platforms to online courses to text message reminders to submit financial aid forms. Amid the excitement, it is important to step back and understand how technology can help—or in some cases hinder—learning. This review article synthesizes and discusses rigorous evidence on the effectiveness of technology-based approaches to education in developed countries and outlines areas for future inquiry. In particular, we examine randomized controlled trials and regression discontinuity studies across the following categories of education technology: (i) access to technology, (ii) computer-assisted learning, (iii) technology-enabled behavioral interventions in education, and (iv) online learning. We hope this synthesis will advance academic understanding of how technology can improve education, outline key areas for new experimental research, and help drive improvements to the policies, programs, and structures that contribute to successful teaching and learning.

This paper advances the proposition that economics, as a discipline, gives rewards that favor the “hard” and disfavor the “soft.” Such bias leads economic research to ignore important topics and problems that are difficult to approach in a “hard” way—thereby resulting in “sins of omission.” This paper argues for reexamination of current institutions for publication and promotion in economics—as it also argues for greatly increased tolerance in norms for publication and promotion as one way of alleviating narrow methodological biases.

We examine the record of cross-country growth over the past fifty years and ask if developing countries have made progress on closing the income gap between their per capita incomes and those in the advanced economies. We conclude that, as a group, they have not and then survey the literature on absolute convergence with particular emphasis on that from the last decade or so. That literature supports our conclusion of a lack of progress in closing the income gap between countries. We close with a brief examination of the recent literature on cross-individual distribution of income, which finds that despite the lack of progress on cross country convergence, global inequality has tended to fall since 2000.

We review research that measures time preferences-i.e., preferences over intertemporal tradeoffs. We distinguish between studies using financial flows, which we call "money earlier or later" (MEL) decisions and studies that use time-dated consumption/effort. Under different structural models, we show how to translate what MEL experiments directly measure (required rates of return for financial flows) into a discount function over utils. We summarize empirical regularities found in MEL studies and the predictive power of those studies. We explain why MEL choices are driven in part by some factors that are distinct from underlying time preferences.

This paper examines the relationship between placement of publications in top five (T5) journals and receipt of tenure in academic economics departments. Analyzing the job histories of tenure–track economists hired by the top 35 US economics departments, we find that T5 publications have a powerful influence on tenure decisions and rates of transition to tenure. A survey of the perceptions of young economists supports the formal statistical analysis. Pursuit of T5 publications has become the obsession of the next generation of economists. However, the T5 screen is far from reliable. A substantial share of influential publications appear in non-T5 outlets. Reliance on the T5 to screen talent incentivizes careerism over creativity.

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This essay reviews Till Time’s Last Sand: A History of the Bank of England, 1694–2013, David Kynaston’s history of the Bank of England (the Bank) from its foundation in 1694 to the present day. I focus on three themes running through his narrative. First, for much of that time, the Bank was a private company playing a public role; how did it manage to do this and why was it eventually brought into public ownership? Second, I examine the various attempts to constrain the Bank’s monetary policy to follow a simple rule; these almost invariably proved unsustainable unless the rule provided enough room for discretion. Finally, I cover the Bank’s journey to becoming the lender of last resort, together with its evolving attitude to the associated risk of moral hazard.

This paper reviews the book Why Muslim Integration Fails in Christian-Heritage Societies by Claire Adida, David Laitin and Marie-Anne Valfort (hereafter, ALV), providing an analytical perspective on the issues related to minority discrimination and integration in a host society. Building upon the sociological and recent economic approaches to cultural integration, we highlight the different mechanisms behind the existence of a discriminatory equilibrium between a majority group and a minority group in a given social context. The paper then discusses the specific case of the Muslim minority groups in the French context and outlines the strengths and limitations of the research approach expanded by ALV. We finally consider the policy proposals provided by ALV, assessing their viability, as well as the dynamic political economy constraints they might face in a Christian-heritage society.

Chris Miller’s book is a historian’s account of Mikhail Gorbachev’s efforts to save the Soviet economy. Miller focuses on the question of why Gorbachev did not follow Deng Xiaoping and did not manage to reform the economy. Miller argues that it was not for the lack of understanding (Gorbachev did invest in learning China’s approach to reform and did understand it well), nor for the lack of trying. In fact, Gorbachev did try to implement Deng’s agricultural and industrial enterprise reforms. However, Gorbachev’s reforms were blocked by powerful vested interests. An inability to tackle the agricultural and industrial lobbies eventually resulted in the bankruptcy and collapse of the Soviet Union. While I generally agree with the political economy argument, I discuss a number of alternative explanations. I also discuss sources of Gorbachev’s weak state capacity and offer an evaluation of Gorbachev’s and post-Gorbachev reform efforts and mistakes based on the political economy research carried out in the last twenty-five years.