This paper documents an early fork in the development of macroeconomics, by examining a debate between the Dutch economists Jan Tinbergen and Johan Koopmans. In a 1932 paper, Tinbergen argued that two firms could be stuck in a “bad” equilibrium in the absence of a coordinated action to...

After the publication of Keynes' "General Theory," economics was frequently described as schizophrenia: (neo-) classical at the micro-level, but Keynesian at the macro-level. In actuality, Keynes' revolution was, to a substantial part, based on the behavioral micro-foundations of the world we...

Four talks on Keynes in relation to the Bloomsbury Group: I. Maynard Keynes of Bloomsbury (Craufurd Goodwin); II. Keynes as Policy Advisor (E. Roy Weintraub); III. Keynes and Economics (Kevin D. Hoover); IV. Keynes and Hayek (Bruce Caldwell). The talks were delivered as part of roundtable...

Professor Axel Leijonhufvud passed away few months ago, at the age of 89. Despite the fact that the contribution he made to economics has been widely recognized, his approach remains 'problematic' because of his dialogue and proximity with different streams of thought, and in particular with the...

Chapter 2 is one of the most important chapters in the General Theory. Not only does it set out Keynes' disagreements with key elements of the classical model, it lays out his own model of the working of the labour market, which underlies the analysis in the remainder of the General Theory. The...

How do fluctuations in Keynes’s notion of aggregate effective demand and their nominal income and expenditure counterparts divide into output and price level changes? Friedman called this the “missing equation” problem, and declared that neither Keynesians, nor Monetarists, nor he had...

Macroeconomists have emphasized the force of facts in forging a consensus understanding of business cycle fluctuations. According to this view, rival economists could not longer hold disparate views on the topic because "facts have a way of not going away" (Blanchard 2009). But how can...

A number of macroeconomic theories, very popular in the 1980s, seem to have completely disappeared and been replaced by the dynamic stochastic general equilibrium (DSGE) approach. We will argue that this replacement is due to a tacit agreement on a number of assumptions, previously seen as...

Macroeconomic theories of the 1980s faced accelerated depreciation when not sudden death. By contrast with econometrics and microeconomics and despite massive progress in access to data and the use of statistical softwares, macroeconomic theory appears not to be a cumulative science so far. When...

We study the construction of the macroeconometric model of the Committee on Economic Stability (CES) of the Social Science Research Council (SSRC) in the early 1960s using the CES's archival records. Building this model was central not only to set the bases for the subsequent construction of...