The confluence of three trends in the U.S. residential housing market - rising home prices, declining interest rates, and near-frictionless refinancing opportunities - led to vastly increased systemic risk in the financial system. Individually, each of these trends is benign, but when they occur...

Traditional economic models have had difficulty explaining the non-monotonic real effects of credit booms and, in particular, why they have predictable negative after-effects for up to a decade. We provide a systematic transmission mechanism by focusing on the flows of resources between...

We examine a propagation mechanism that arises from households' long-term borrowing and show empirically that it has sizable real effects. The mechanism recognises that when there is long-term debt, an impulse to new borrowing generates a predictable hump-shaped path of future debt service. We...

The paper introduces a portfolio-based Keynesian dynamic stochastic general disequilibrium model. It is an endogenous phase-switching macroeconomic model of risky investment where the rational expectation is applied in the financial market with three financial instruments of stocks, credits, and...

Central banks repo market operations and liquidity infusions occasion a structural liquidity mismatch in bank balance sheets and increase the dependence on central bank liquidity. This paper argues for what I term “Circular Monetary Economics”, an approach to monetary policy that seeks to...

We construct a small-open-economy, New Keynesian dynamic stochastic generalequilibrium model with real-financial linkages to analyze the effects of financial shocks and macroprudential policies on the Canadian economy. Our model has four key features. First, it allows for non-trivial...

We introduce a new model for time-varying spatial dependence. The model extends the well-known static spatial lag model. All parameters can be estimated conveniently by maximum likelihood. We establish the theoretical properties of the model and show that the maximum likelihood estimator for the...

The main purpose of this paper is to construct a financial conditions index (FCI) for South Africa. The analysis extracts the index by applying two alternative approaches (principal component analysis and Kalman filter), which identify an unobservable common factor from a group of external and...

In a seminal 1972 paper, Robert M. May asked: "Will a Large Complex System Be Stable?" and argued that stability (of a broad class of random linear systems) decreases with increasing complexity, sparking a revolution in our understanding of ecosystem dynamics. Twenty-five years later, May,...

This paper presents a general equilibrium model with technological uncertainty, financial markets and imperfect information. The future consists of uncertain environments that are more or less clearly distinguishable (measurable). This limits the possibilities of specialization and...