A recent literature suggests that because investment expenditures are irreversible and can be delayed, they may be highly sensitive to uncertainty. We briefly summarize the theory, stressing its empirical implications. We then use cross-section and time-series data for a set of developing and industrialized countries to explore the relevance of the theory for aggregate investment. We find that ...

Empirical evidence documents a tight link between aggregate and firm-level investment and corporate credit spreads. Moreover, it has been shown that credit spreads largely reflect a compensation for bearing macroeconoimc risks. We use a tractable model with recursive preferences and time varying macroeoconomic risk to investigate the link between aggregate risk and corporate policies in a produ...

This paper explores the institutional factors behind the crisis of capital accumulation in South Africa in the 1970s and 1980s. Because of its focus on institutional stability, the paper contributes to the literature on the existence of an apartheid social structure of accumulation in which economic and political institutions are important determinants of investment. Investment function estimat...

We incorporate long-term defaultable corporate bonds and credit risk in a dynamic stochastic general equilibrium business cycle model. Credit risk amplifies aggregate technology shocks. The debt-capital ratio is a new state variable and its endogenous movements provide a propagation mechanism. The model can match the persistence and volatility of output growth as well as the mean equity premium...

Whether or not the marginal product of capital (MPK) differs across countries is a question that keeps coming up in discussions of comparative economic development and patterns of capital flows. Using easily accessible macroeconomic data we find that MPKs are remarkably similar across countries. Hence, there is no prima facie support for the view that international credit frictions play a major...

This paper studies robust Ramsey policy problems in a general discrete-time linearquadratic framework when the Ramsey planner faces three types of ambiguity. This framework includes both exogenous and endogenous state variables. In addition, the equilibrium system from the private sector contains both backward-looking and forward-looking dynamics. We provide recursive characterizations and algo...

The aim of this work is to investigate the effects of different force fields and temperatures on the structural character of Aβ (12-28) peptide in aqueous solution. Moreover, the structural character of Aβ (12-28) peptide is compared with other amyloid peptides (such as H1 and α-syn12 peptide). The two independent temperature replica exchange molecular dynamics (T-REMD) simulations were complet...

We use a panel of over 120,000 Chinese firms of different ownership types over the period 2000-2007 to analyze the linkages between investment in fixed and working capital and financing constraints. We find that those firms characterized by high working capital display high sensitivities of investment in working capital to cash flow (WKS) and low sensitivities of investment in fixed capital to ...

This paper examines the effect of economic policy uncertainty and its components on firm-level investment. It is found that economic policy uncertainty in interaction with firm-level uncertainty depresses firms’ investment decisions. When firms are in doubt about costs of doing business due to possible changes in regulation, cost of health care and taxes, they become more guarded with investmen...

Labor’s share of GDP in most OECD countries has declined over the last two decades. Some authors have suggested that these changes are linked to deregulation of product and labor markets. To examine this we focus on a large quasi-experiment in the OECD: the privatization of many network industries (e.g. telecommunications and utilities). We present a model with agency problems, imperfect produc...