We report that the price of a 6.5oz Coke was 5¢ from 1886 until 1959. Thus, we are documenting a nominal price rigidity that lasted more than 70 years! The case of Coca-Cola is particularly interesting because during the 70-year period there were substantial changes in the soft drink industry...

The introduction of monetary variables into post-Keynesian models of distribution and growth is an ongoing process. Lavoie (1995) has proposed a Kaleckian ‘Minsky-Steindl-model’ of distribution and growth, incorporating the effects debt and debt services have on short and long run capital...

We use store-level data to document the exact process of changing prices and to directly measure menu costs at five multi-store supermarket chains. We show that changing prices in these establishments is a complex process, requiring dozens of steps and a nontrivial amount of resources. The menu...

We offer the first direct evidence of an implicit contract in a goods market. The evidence we offer comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a substantial amount of written evidence of its implicit contract with its consumers—a very explicit form of...

We combine two data sets to study price rigidity. The first consists of weekly time series of retail, wholesale, and spot prices for twelve products. These time series contain two exogenous cost shocks. We find that prices exhibit more rigidity in response to the second shock than the first. The...

Many empirical studies have found that interest rate increases have a positive effect on the price level. This paper pursues an obvious, but neglected explanation: interest payments are a cost of production that is at least in part passed on to customers. A model shows that the cost- push effect...

We empirically study the price adjustment process at multiproduct retail stores. We use a unique store level data set for five large supermarket and one drugstore chains in the U.S., to document the exact process required to change prices. Our data set allows us to study this process in great...

The belief that equality of demand and supply determines price and clears the market is universal. Shockingly, this belief is unfounded. It contradicts macro’s claim that equality of demand and supply determines output. It contradicts (new) monetary theory, which claims that equality of demand...

Constructing a general equilibrium model which compactly incorporates the markets for outputs, labor, money, and equities, we examine equilibrium unemployment. While a mechanism of an efficiency wage brings about nominal wage rigidity, unemployment occurring in our model definitely has Keynesian...

A Post-Keynesian Stock-Flow Consistent Macroeconomic Growth Model: Preliminary Results Claudio H. Dos Santos (The Levy Economics Institute) Gennaro Zezza (University of Cassino, Italy, and The Levy Economics Institute) Abstract Stock-flow consistent models may be considered the rallying point...