Organizations & Markets

Over the past decade, data has transformed everyday life. While it has changed the way people shop and businesses operate (Goldfarb and Tucker, 2019), it has only just begun to permeate economists thinking about the aggregate economy. In the early twentieth century, economists like Schultz (1943) analyzed agrarian economies and land-use issues. As agricultural productivity improved, production shifted more to manufacturing. Modern macroeconomics adapted with models featuring capital and labor, markets for goods, and equilibrium wages (Solow, 1956).

We study the association between human capital and rollovers into Individual Retirement Accounts (IRAs), using administrative records from the defined contribution savings plan for U.S. government employees: the Thrift Savings Plan (TSP). Employees who separate from government employment have the option to leave balances in the TSP, where fees are currently under 4 basis points. However, we estimate that more than a third of the TSP balances end up being rolled over into IRA accounts, which are very likely to have much higher fees.

We develop a classification methodology for the context and content of news articles to predict risk and return in stock markets in 51 developed and emerging economies. A parsimonious summary of news, including topic-specific sentiment, frequency, and unusualness (entropy) of word flow, predicts future country-level returns, volatilities, and drawdowns. Economic and statistical significance are high and larger for year-ahead than monthly predictions. The effect of news measures on market outcomes differs by country type and over time.

Media economics provides a basis for Eli Noam in setting out the logic behind a series of expectations he shares about how the transition from regular linear TV to online video will lead to major changes in culture, politics, and society. His perspective on the dramatic implications of this shift suggests comparisons with the fundamental changes brought about by the introduction of first-generation TV over seventy years ago, with both exciting advances and also disturbing problems.

We propose the standard neoclassical model of investment under uncertainty with short-run adjustment frictions as a benchmark for earnings-return patterns absent accounting influences. We show that our proposed benchmark generates a wide range of earnings-return patterns documented in prior accounting research. Notably, our model generates a concave earnings-return relation, similar to that of Basu [1997], and predicts that the earnings-return concavity increases in the volatility of firms' underlying shock processes and decreases in investment levels.

We propose a simple measure of de facto financial market integration based on a factor model of monthly equity returns, which can be computed back to the first era of financial globalization for 17 countries. Global financial market integration follows a "swoosh" shape — i.e. high pre-1913, still higher post-1990, low in the interwar period — rather than the other shapes hypothesized in earlier literature. We find no evidence of financial globalization reversing since the Great Recession as claimed in other recent studies.

We develop a theory of optimal government debt in which publicly-issued and privately-issued safe assets are substitutes. While government bonds are backed by future tax revenues, privately-issued safe assets are backed by the future repayment of pools of defaultable private loans. We find that a higher supply of public debt crowds out privately-issued safe assets less than one for one and reduces the interest spread between borrowing and deposit rates.

This paper evaluates the effect of Paid Family Leave (PFL) on breastfeeding, which we identify using California's enactment of a 2004 PFL policy that ensured mothers up to six weeks of leave at a 55 percent wage replacement rate. We employ synthetic control models for a large, representative sample of over 270,000 children born between 2000 and 2012 drawn from the restricted-use versions of the 2003-2014 National Immunization Surveys.

We develop an empirical model of exchange rate returns, applied separately to samples of developed (DM) and developing (EM) economies’ currencies against the dollar. Monetary policy stance of the global central banks, measured via a natural-language-based approach, has a large effect on exchange rate returns over the ensuing year, is closely linked to the VIX, and becomes increasingly important in the post-crisis era.