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NEP: New Economics Papers
Agricultural Economics
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Edited by: Angelo Zago
http://ideas.repec.org/e/pza49.html
Universita degli Studi di Verona
Date: 2006-02-26
Papers: 2
This document is in the public domain, feel free to circulate it.
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In this issue we have:
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1. Market Power, Brand Characteristics and Demand for Retail
Grocery Products
Paul H. Jensen; Elizabeth Webster
2. Responses of Consumers to the Mandatory Disclosure of
Information: Evidence from Natural Experiments in Japanese
Inter-brand Cigarette Demands
Junmin Wan
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1. Market Power, Brand Characteristics and Demand for Retail
Grocery Products
Paul H. Jensen (Melbourne Institute of Applied Economic and
Social Research, The University of Melbourne)
Elizabeth Webster (Melbourne Institute of Applied Economic
and Social Research, The University of Melbourne)
This paper examines the effects of market power and product
differentiation on demand for grocery products in Australia over
the period 2002 to 2005. We construct a model of the relationship
between demand, market power and brand characteristics and then
estimate the model using monthly data on price, quantity and
volume sold for a bundle of 92 brands in 12 product categories
from major supermarket stores across Australia. We also use data
on the characteristics of each brand such as whether the product
is environment-friendly, is a ?private label?, or is made
from recyclable materials. Our results suggest that firms are
able to affect their demand curves through both product
differentiation strategies and through market power.
Date: 2006-02
URL: http://d.repe
c.org/n?u=RePEc:iae:iaewps:wp2006n05&r=agr
2. Responses of Consumers to the Mandatory Disclosure of
Information: Evidence from Natural Experiments in Japanese
Inter-brand Cigarette Demands
Junmin Wan (Osaka School of International Public Policy,
Osaka University)
I estimated inter-brand cigarette demands with nicotine, tar
content and policy event information in Japan during 1950-84. The
demand for all brands increased but the demand for plain (non-
filter) brands decreased due to the dissemination ofgA Note about
Health Damage from Smoking h in 1964. The demand for all brands
increased but the demand for high-nicotine brands decreased due
to the disclosure of nicotine and tar content in 1967 and the
labeling warnings in 1972, however consumers had still preferred
high-nicotine brands after 1972. Contrastively, the demand for
high-tar brands increased in 1967 but decreased in 1972, and
consumers had switched to prefer low-tar brands after 1972.
Disclosure did not reduce the intake of nicotine but reduced the
intake of tar, accordingly disclosure may benefit consumers by
reducing the health risk as tar causes cancers. In line with
changes in inter-brand demands, the monopolistic firm
discontinued old products with poorer quality (plain, high-tar)
but provided new better ones (filter-tipped, low-tar).
Keywords: disclosure, nicotine, tar, cigarette, inter-brand,
panel estimation, difference in difference
JEL: I18 D12 D82
Date: 2004-06
Date: 2006-02
URL: http://d.repec.or
g/n?u=RePEc:osk:wpaper:0413r&r=agr
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