a b s t r a c tIn this paper, we argue for the importance of explicitly considering nonlinearities in analyzing the behavior of the New Keynesian model with a zero lower bound (ZLB) of the nominal interest rate. To show this, we report how the decision rules and the equilibrium dynamics of the model are substantially affected by the nonlinear features brought about by the ZLB. We also illustrate a tension between the length of a spell at the ZLB and the drop in consumption there.
Motivated by the recent experience of the U.S. and the Eurozone, we describe the quantitative properties of a New Keynesian model with a zero lower bound (ZLB) on nominal interest rates, explicitly accounting for the nonlinearities that the bound brings. Besides showing how such a model can be e¢ ciently computed, we …nd that the behavior of the economy is substantially a¤ected by the presence of the ZLB. In particular, we document 1) the unconditional and conditional probabilities of hitting the ZLB; 2) the unconditional and conditional probabilty distributions of the duration of a spell at the ZLB; 3) the responses of output to government expenditure shocks at the ZLB, 4) the distribution of shocks that send the economy to the ZLB; and 5) the distribution of shocks that keep the economy at the ZLB.
What are the positive and normative implications of eliminating bankruptcy protection for indebted individuals? Without bankruptcy protection, creditors can collect on defaulted debt to the extent permitted by wage garnishment laws. The elimination lowers the default premium on unsecured debt and permits low-net-worth individuals suffering bad earnings shocks to smooth consumption by borrowing. There is a large increase in consumer debt financed essentially by super-wealthy individuals, a modest drop in capital per worker, and a higher frequency of consumer default. Average welfare rises by 1 percent of consumption in perpetuity, with about 90 percent of households favoring the change.
How does physical capital accumulation a¤ect the decision to default in developing small open economies? We …nd that, conditional on a level of foreign indebtedness, more capital improves the sovereign's ability to meet its obligations, reducing the likelihood of default and the risk premium. This e¤ect, however, is diminishing in the stock of capital because capital also tames the severity of the contraction following default, making autarky more appealing. Access to long-term debt and costly capital adjustment are crucial for matching business cycles. Our quantitative model delivers default episodes that mimic those observed in the data.
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