5 April 2013
Analyzing data from a survey of scientists working in four fields who come from 16 different countries, Paula Stephan
, Chiara Franzoni
, and Giuseppe Scellato
find that these individuals may be drawn to training programs in the United States because of the prestige and the career prospects they present, but are discouraged from coming by what they perceive to be the U.S. lifestyle. The researchers present some evidence that potential Ph.D. students and post-docs are increasingly choosing to pursue their training in other nations, including Australia, Germany, and Switzerland.
4 April 2013
, Yingdi Wang
, and Michael Weisbach
study a sample of over 14,000 investments by nearly 2,000 limited partners (LPs) in 1,250 buyout-and-venture funds that were started between 1991 and 2006. They find that the superior performance of these endowment investors in 1991-8 -- which has been documented -- was mainly due to their greater access to the top-performing venture capital partnerships. From 1999-2006, endowments no longer outperformed other investments, perhaps because LPs did not have unique access to restricted funds, or because they did not choose better investments than other types of institutional investors.
3 April 2013
Analyzing data from a California utility, Matthew Kahn
, Nils Kok
, and John Quigley
show that since 1970 there has been an inverse relationship between a commercial building's vintage (and quality) and electricity consumption. For example, they find that newer, high-quality buildings respond faster to changes in outdoor temperature than older buildings, which leads to increased energy consumption. These findings stand in contrast with evidence on energy consumption trends for residential structures. Technological progress in a commercial building's design may reduce the energy demand from heating, cooling, and ventilation, but the behavior of the building tenants and their adoption of appliances can more than offset these savings.
2 April 2013
Using NSF survey data on foreign-born students receiving their Ph.D.s in science and engineering from U.S. universities between 1960 and 2008, Jeffrey Grogger
and Gordon Hanson
find that 77 percent of them said that they planned to stay in the United States. Those who were most likely to stay had more highly educated parents and were more successful in obtaining graduate fellowships than their peers. Foreign students were less likely to stay in the United States if they were from countries with higher average income levels, or countries that had recently democratized
1 April 2013
and Sara Markowitz
find that bicycle helmet laws are associated with fewer bicycle-related head injuries, and non-head injuries, among children. However, these same laws are associated with increases in head injuries from other wheeled sports. Therefore, the observed reduction in bicycle-related head injuries may be attributable to less bicycle riding because of the helmet laws.
29 March 2013
The Moving to Opportunity (MTO) program randomly selected some families living in public housing and gave them a chance to move to a less-disadvantaged neighborhood. Jens Ludwig
, Greg Duncan
, Lisa Gennetian
, Lawrence Katz
, Ronald Kessler
, Jeffrey Kling
, and Lisa Sanbonmatsu
show that after 10-15 years, the adults in these families had better physical and mental health, although MTO was not associated with increased economic self-sufficiency. These researchers also find that MTO did not seem to affect the physical heath of the children in these families, or lead to changes in their educational achievement. In terms of risky youthful behavior and young people's health, the results of MTO were mixed: girls did better in some ways and boys did worse.
28 March 2013
Analyzing new quarterly data for a period that included multiple wars and depressions in the United States and Canada, Michael Owyang
, Valerie Ramey
, and Sarah Zubairy
find that the "spending multiplier" -- the impact of additional government spending on national income -- is no greater during periods of high unemployment in the United States than at other times. They also find that the multiplier is always less than one. For Canada, however, they find some evidence of higher multipliers during periods of slack, as well as some multipliers greater than one.
27 March 2013
and Sanjay Misra
estimate that between 1836 and 2011 the average real rate of price change for gold in the United States was 1.1 percent per year. Based on the relationship between gold prices, consumption, and GDP, they further estimate that gold’s expected real rate of return -- which includes an unobserved dividend yield -- is around 1 percent.
26 March 2013
In October 2003, Los Angeles transit workers began a strike that lasted 35 days and shut down bus and rail lines. Using freeway speed data from that strike, Michael Anderson
estimates that average highway delays increase 47 percent during peak periods when transit service ceases. These effects are largest on freeways that parallel transit lines with heavy ridership. His estimates imply that the total congestion-relief benefit of operating the Los Angeles transit system is between $1.2 billion to $4.1 billion per year, or $1.20 to $4.10 per peak-hour transit passenger mile.
25 March 2013
and Maureen Cropper
analyze the location choices of a large sample of households that moved from one metropolitan statistical area to another between 1995 and 2000. Taking into account amenities in the current location, the earnings opportunities and housing costs there, and the cost of moving there from where the residents had lived in 1995, they are able to estimate households' willingness to pay for changes in mean winter and summer temperature. They use these values to assess the welfare effects of temperature changes in cities throughout the United States. They estimate that households will experience an average welfare loss of 2.7 percent between 2020 and 2050 under the climate-friendly scenario that comes from a special report of the Intergovernmental Panel on Climate Change 2000. Under a more extreme scenario in that report, households in 25 out of the 26 cities in their sample will suffer an average welfare loss equal to 5 percent.