We present a new estimator for causal effects with panel data that builds on insights behind the widely used difference-in-differences and synthetic control methods. Relative to these methods we find, both theoretically and empirically, that this “synthetic difference-in-differences” estimator has desirable robustness properties, and that it performs well in settings where the conventional estimators are commonly used in practice. We study the asymptotic behavior of the estimator when the systematic part of the outcome model includes latent unit factors interacted with latent time factors, and we present conditions for consistency and asymptotic normality. (JEL C23, H25, H71, I18, L66)

Abstract This article presents information on various books related to accountancy. The book "An Accountant's Guide to Databases," by K.N. Bhasker, examines the basic concepts and terminology of database management and its implications for the field of accounting. The book begins with a brief introduction to current micro-technology and the organization of computer files and defines three distinctive meanings of the term database relevant to its use in accounting. The purpose of the book "Comprehensive Auditing in Canada: Theory and Practice," by James Cutt, is the development of a theory and methodology for a comprehensive auditing model by examination of current theory and practice in the areas of auditing and policy analysis or program evaluation. The theory and methodology developed is designed primarily for the nonprofit component of the public sector but is extended to the profit component of the public and private sectors. In the book "The British Accounting Review Research Register 1988," edited by K.P. Gee and R.H. Gray, the data presented has been gathered from across 90 universities, polytechnics and colleges, and provides information on 1,072 accounting and finance academic staff members throughout the British Isles.

Abstract Focuses on a project by the American Accounting Association's Committees on Professional Examinations which evaluated the professional examinations for accountants. Objectives of the project; Methodology of the projects; Comparison of examinations and accounting curricula; Recommendations.

Engagement in a destructive war can be understood as the “punishment” for entering into a dispute. Institutions that reduce the chance that disputes lead to war make this punishment less severe. This may incentivize hawkish policies like militarization and potentially offset the benefits of peace brokering. We study a model in which unmediated peace talks are effective at improving the peace chance for given militarization but lead to more militarization and ultimately to a higher incidence of war. Instead, a form of third-party mediation inspired by work of Myerson effectively brokers peace in emerged disputes and also minimizes equilibrium militarization.

We exploit a unique data set, combining rich experimental data with high-quality administrative data, to study dropout from the college track in Norway, and why boys are more likely to drop out. The paper provides three main findings. First, we show that family background and personal characteristics contribute to explain dropout. Second, we show that the gender difference in dropout rates appears both when the adolescents select into the college track and after they have started. Third, we show that different processes guide the choices of the boys and the girls of whether to drop out from the college track.

Participating in insurgency is physically risky. Why do people do so? Using new data on 3,799 payments to insurgent fighters by Al Qa'ida Iraq, we find that: (i) wages were extremely low relative to outside options, even compared to unskilled labor; (ii) the estimated risk premium is negative; and (iii) the wage schedule favors equalization and provides additional compensation for larger families. These results challenge the notion that fighters are paid their marginal product, or the opportunity cost of their time. They may be consistent with a “lemons” model in which fighters signal commitment by accepting low wages.

ABSTRACT We study links between the labor market for loan officers and access to mortgage credit. Using novel data matching mortgage applications to loan officers, we find that minorities are underrepresented among loan officers. Minority borrowers are less likely to complete mortgage applications, have completed applications approved, and to ultimately take up a loan. These disparities are reduced when minority borrowers work with minority loan officers. These pairings also lead to lower default rates, suggesting minority loan officers have an informational advantage with minority borrowers. Our results suggest minority underrepresentation among loan officers reduces minority borrowers’ access to credit.

In a randomized controlled trial, we test whether removal of a barrier to exercise can improve academic performance.We find strong support for this hypothesis: university students who were provided with a free gym card exercised more and had a significant improvement in academic performance.The treated students were both less likely to drop out of classes and to fail at the exam.We provide evidence showing that exercise caused a healthier lifestyle and increased perceived self-control, which ultimately improved academic performance.The study demonstrates that removing barriers to physical activity can be an important tool for improving educational achievements.