An Experimental Study of Money Illusion in Intertemporal Decision Making

34 Pages Posted: 12 Nov 2014

See all articles by Tetsuo Yamamori

Tetsuo Yamamori

Takasaki City University of Economics

Kazuyuki Iwata

Takasaki City University of Economics - Regional Policy

Akira Ogawa

International Christian University

Date Written: November 2014

Abstract

To examine the degree to which price fluctuations affect how individuals approach an intertemporal decision-making problem, we conduct a laboratory experiment in which subjects spend their savings on consumption over 20 periods. In the control treatment, the commodity price is constant across all periods. In the small (large) price-fluctuation treatment, the price rate of change is always 1% (20%), and the rate of change of savings is always the same as the commodity price. Therefore, the optimal amount of consumption is the same in all three treatments. Our main findings are threefold. First, the magnitude of misconsumption (i.e., the deviation from optimal consumption) is significantly high in order of the control, small price-fluctuation, and large price-fluctuation treatments. Second, in the control treatment, the magnitude of misconsumption shrinks over time, whereas it gradually increases in the small and large price-fluctuation treatments. Finally, regardless of the presence of price fluctuations, subjects exhibit under-consumption (over-saving) behavior, and the presence of price fluctuations strengthens such a tendency.

Suggested Citation

Yamamori, Tetsuo and Iwata, Kazuyuki and Ogawa, Akira, An Experimental Study of Money Illusion in Intertemporal Decision Making (November 2014). Tokyo Center for Economic Research (TCER) Paper No. E-85, Available at SSRN: https://ssrn.com/abstract=2522704

Tetsuo Yamamori (Contact Author)

Takasaki City University of Economics ( email )

United States

Kazuyuki Iwata

Takasaki City University of Economics - Regional Policy ( email )

United States

Akira Ogawa

International Christian University ( email )

Osawa 3-10-2
Mitaka-shi
Tokyo, Mitaka-shi 181-8585
Japan

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