The creation of the Economic and Monetary Union (EMU) has not brought significant gains to the Portuguese economy in terms of real convergence with wealthier eurozone countries. We analyze the causes of the underperformance of the Portuguese economy in the last decade, discuss its growth...

The velocity of money usually rises in expansions and falls in recessions This paper explains this pro-cyclical movement of velocity using two ideas: (i) during business cycles the movement of investment and consumption of durable goods has a larger amplitude than consumption of non-durable...

A central tenet of the so-called new consensus view in macroeconomics is that there is no long-run trade-off between inflation and unemployment. The main policy implication of this principle is that all monetary policy can aim for is (modest) short-run output stabilization and long-run price...

Macroeconomics has been dominated over the last four decades by the Rational Expectations Hypothesis (REH) which implies that economies are inherently stable. REH is a key element of the New Neoclassical Synthesis (NNS) macroeconomic model which has also played a dominant role in theory and...

The rational expectations hypothesis (REH) is the standard approach to expectations formation in macroeconomics. We discuss its compatibility with two strands of Karl Popper's philosophy: his theory of knowledge and learning, and his "rationality principle" (RP). First, we show that the REH is...

The aggregate supply and demand model (AS-AD) posited by Keynes in the General Theory and elaborated by Weintraub and Davidson is analysed by inserting a CES production function. We perform a comparative statics analysis where the effects on the equilibrium level of employment and the price...

The paper analyses the dynamic behaviour of an economy when the central bank (CB) implements an inflation targeting regime. For this purpose, a simple macroeconomic model is constructed and subjected to formal dynamic analysis. A first result is that, under certain conditions, the emergence of...

Conventional explanations of how a growing potential output generates an equi-proportional increase in aggregate demand in the long run usually rely on the real balance effect. Yet this mechanism has a negligible size and an uncertain sign. We present a theoretical framework for the analysis of...

Romer has proposed an alternative macroeconomic framework, i.e., the IS-MP-IA model. Its proponents claim that it constitutes a ‘modern’ view of macroeconomics. We show that the new framework is closely attached to the neoclassical synthesis and, in addition, fails to take account of: (i)...