Does Money Impede Convergence?

John Hey and Daniela Di Cagno

No 1/2015, Working Papers CESARE from Dipartimento di Economia e Finanza, LUISS Guido Carli

Abstract: Inspired by Clower's conjecture that the necessity of trading through money in monetised economies might hinder convergence to competitive equilibrium, and hence, for example, cause unemployment, we experimentally investigate behaviour in markets where trading has to be done through money. In order to evaluate the properties of these markets, we compare their behaviour to behaviour in markets without money, where money cannot intervene. As the trading mechanism might be a compounding factor, we investigate two kinds of market mechanism: the double auction, where bids, asks and trades take place in continuous time throughout a trading period; and the clearing house, where bids and asks are placed once in a trading period, and which are then cleared by an aggregating device. We thus have four treatments, the pairwise combinations of nonmonetised/monetised trading with double auction/clearing house. We find that: convergence is faster under non-monetised trading, implying that the necessity of using money to facilitate trade hinders convergence; that monetised trading is noisier than non-monetised trading; and that the volume of trade and realised surpluses are higher with the double auction than the clearing house. As far as efficiency is concerned, monetised trading lowers both informational and allocational efficiency, and while the double auction outperforms the clearing house in terms of allocational efficiency, the clearing house is marginally better than the double auction in terms of informational efficiency when trade is through money. Crucially we confirm the conjecture that inspired these experiments: that the necessity to use money in trading hinders convergence to competitive equilibrium, lowers realised trades and surpluses, and hence may cause unemployment.

Keywords: clearing house mechanism; double auction mechanism; experimental markets; money; monetised trading; non-monetised trading (search for similar items in EconPapers)
JEL-codes: C92 D40 E24 (search for similar items in EconPapers)
Date: 2015-01
New Economics Papers: this item is included in nep-exp, nep-mac and nep-mon
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Related works:
Chapter: Does money impede convergence? (2018)
Journal Article: Does money impede convergence? (2016)
Working Paper: Does Money Impede Convergence? (2015)
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