NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Seth M. Freedman

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Working Papers

May 2014Public Health Insurance Expansions and Hospital Technology Adoption
with Haizhen Lin, Kosali Simon: w20159
This paper explores the effects of public health insurance expansions on hospitals’ decisions to adopt medical technology. Specifically, we test whether the expansion of Medicaid eligibility for pregnant women during the 1980s and 1990s affects hospitals’ decisions to adopt neonatal intensive care units (NICUs). While the Medicaid expansion provided new insurance to a substantial number of pregnant women, prior literature also finds that some newly insured women would otherwise have been covered by more generously reimbursed private sources. This leads to a theoretically ambiguous net effect of Medicaid expansion on a hospital’s incentive to invest in technology. Using American Hospital Association data, we find that on average, Medicaid expansion has no statistically significant effect on...
January 2014The Signaling Value of Online Social Networks: Lessons from Peer-to-Peer Lending
with Ginger Zhe Jin: w19820
We examine whether social networks facilitate online markets using data from a leading peer-to-peer lending website. Borrowers with social ties are consistently more likely to have their loans funded and receive lower interest rates. However, most social loans do not perform better ex post, except for loans with endorsements from friends contributing to the loan or loans with group characteristics most likely to provide screening and monitoring. We also find evidence of gaming on borrower participation in social networks. Overall, our findings suggest that return-maximizing lenders should be careful in interpreting social ties within the risky pool of social borrowers.
March 2011Learning by Doing with Asymmetric Information: Evidence from Prosper.com
with Ginger Zhe Jin: w16855
Using peer-to-peer (P2P) lending as an example, we show that learning by doing plays an important role in alleviating the information asymmetry between market players. Although the P2P platform (Prosper.com) discloses part of borrowers’ credit histories, lenders face serious information problems because the market is new and subject to adverse selection relative to offline markets. We find that early lenders did not fully understand the market risk but lender learning is effective in reducing the risk over time. As a result, the market excludes more and more sub-prime borrowers and evolves towards the population served by traditional credit markets.
July 2009Product Recalls, Imperfect Information, and Spillover Effects: Lessons from the Consumer Response to the 2007 Toy Recalls
with Melissa Schettini Kearney, Mara Lederman: w15183
In 2007, the Consumer Product Safety Commission (CPSC) issued 276 recalls of toys and other children's products, a sizeable increase from previous years. The overwhelming majority of the 2007 toy recalls were due to high levels of lead content and almost all of these toys were manufactured in China. This period of recalls was characterized by substantial media attention to the issue of consumer product safety and eventually led to the passage of the Consumer Product Safety Improvement Act of 2008. This paper examines consumer demand for toys following this wave of dangerous toy recalls. The data reveal four key findings. First, the types of toys that were involved in recalls in 2007 experienced above average losses in Christmas season sales. Second, Christmas sales of infant/preschool toys...

Published: Seth Freedman & Melissa Kearney & Mara Lederman, 2012. "Product Recalls, Imperfect Information, and Spillover Effects: Lessons from the Consumer Response to the 2007 Toy Recalls," The Review of Economics and Statistics, MIT Press, vol. 94(2), pages 499-516, May. citation courtesy of

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