Naoki Wakamori

Author

Staff working papers

Identifying the Degree of Collusion Under Proportional Reduction

Staff Working Paper 2017-51 Oleksandr Shcherbakov, Naoki Wakamori
Proportional reduction is a common cartel practice in which cartel members reduce their output proportionately. We develop a method to quantify this reduction relative to a benchmark market equilibrium scenario and relate the reduction to the traditional conduct parameter.

Why Do Shoppers Use Cash? Evidence from Shopping Diary Data

Staff Working Paper 2012-24 Naoki Wakamori, Angelika Welte
Recent studies find that cash remains a dominant payment choice for small-value transactions despite the prevalence of alternative means of payment such as debit and credit cards. For policy makers an important question is whether consumers truly prefer using cash or merchants restrict card usage.

Portfolio Considerations in Differentiated Product Purchases: An Application to the Japanese Automobile Market

Staff Working Paper 2011-27 Naoki Wakamori
Consumers often purchase more than one differentiated product, assembling a portfolio, which might potentially affect substitution patterns of demand and, as a consequence, oligopolistic firms’ pricing strategies.
Content Type(s): Staff research, Staff working papers Topic(s): Economic models, Market structure and pricing JEL Code(s): D, D4, L, L5, Q, Q5

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