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作者：Ball, L; Mankiw, NG
作者单位：Johns Hopkins University; Harvard University
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作者：Kilian, L
作者单位：University of Michigan System; University of Michigan; Centre for Economic Policy Research - UK
摘要：A Monte Carlo analysis of the coverage accuracy and average length of alternative bootstrap confidence intervals for impulse-response estimators shows that the accuracy of equal-tailed and symmetric percentile-t intervals can be poor and erratic in small samples (both in models with large roots and in models without roots near the unit circle). In contrast, some percentile bootstrap intervals may be both shorter and more accurate. The accuracy of percentile-t intervals improves with sample siz...
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作者：Rose, E
作者单位：University of Washington; University of Washington Seattle
摘要：This paper examines the relationship between consumption smoothing and excess female mortality, by asking if favorable rainfall shocks in childhood increase the survival probabilities of girls to a greater extent than they increase boys' survival probabilities for a sample of rural Indian children. In order to avert the issue of selection bias due to underreporting of births of girls, a methodology is employed that does not require data on births by gender. The results indicate that favorable ...
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作者：Hellerstein, JK; Imbens, GW
作者单位：University System of Maryland; University of Maryland College Park; National Bureau of Economic Research; University of California System; University of California Los Angeles
摘要：In this paper we analyze the estimation of coefficients in regression models under moment restrictions in which the moment restrictions are derived from auxiliary data. The moment restrictions yield weights for each observation that can subsequently be used in weighted regression analysis. We discuss the interpretation of these weights under two assumptions: that the target population (from which the moments are constructed) and the sampled population (from which the sample is drawn) are the s...
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作者：Henderson, R; Jaffe, AB; Trajtenberg, M
作者单位：Massachusetts Institute of Technology (MIT); Brandeis University; Tel Aviv University; National Bureau of Economic Research
摘要：This paper explores the recent explosion in university patenting as a source of insight into the changing relationship between the university and the private sector. Before the mid-1980s, university patents were more highly cited, and were cited by more diverse patents, than a random sample of all patents. More recently several significant shifts in university patenting behavior have led to the disappearance of this difference. Thus our results suggest that between 1965 and 1988 the rate of in...
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作者：Bierlen, R; Featherstone, AM
作者单位：University of Arkansas System; University of Arkansas Fayetteville; Kansas State University
摘要：This study used a 1976-1992 panel data set to test whether farm machinery investors face finance constraints. Tests were based on fundamental q investment equations in which cash flow was added as an additional explanatory variable. Results indicated that (1) credit constraints were generally not a problem during the 1970s boom, (2) credit constraints became a problem during the 1980s and early 1990s because of tighter credit and/or more conservative financial managerial styles, (3) the invest...
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作者：Driscoll, JC; Kraay, AC
作者单位：Brown University; The World Bank
摘要：Many panel data sets encountered in macroeconomics, international economics, regional science, and finance are characterized by cross-sectional or spatial'' dependence. Standard techniques that fail to account for this dependence will result in inconsistently estimated standard errors. In this paper we present conditions under which a simple extension of common nonparametric covariance matrix estimation techniques yields standard error estimates that are robust to very general forms of spatial...
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作者：Zagorsky, JL
作者单位：University System of Ohio; Ohio State University
摘要：Empirical investigations of the U.S. macroeconomy often examine only the post-World War II period because very few key data series exist for earlier years. However, this brief time period misses major economic shocks like the Great Depression and World War II. Using a previously unknown data set, this paper solves part of the problem by creating a long-run job vacancy series from 1923 to 1994 based on help-wanted advertising data. Analysis suggests that the series is consistent and has no sign...
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作者：Carpenter, RE; Fazzari, SM; Petersen, BC
作者单位：Emory University; Washington University (WUSTL)
摘要：This study provides new evidence of the importance of financing constraints for explaining the dramatic cycles in inventory investment. We compare the empirical performance of different financial variables (coverage ratio, cash stocks, and cash flow) used in previous research to test for the presence of financing constraints. The comparison is undertaken in a common framework with an identical sample and high-frequency (quarterly) firm panel data. Cash flow is much more successful than cash st...
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作者：Pagan, AR; Robertson, JC
作者单位：Australian National University
摘要：In this paper we examine a number of recent studies that claim to have obtained a well-defined liquidity effect using structural VAR models based on broad measures of money. These studies can be distinguished in terms of the identifying restrictions, sample periods, and frequency of data used. We show that estimation of the structural coefficients of all these models can be achieved by instrumental-variable methods, where the instruments are predetermined variables and the estimated structural...
