This dissertation empirically studies demand complementarities in automobile purchases using newly collected Japanese household-level panel data, Keio Household Panel Survey. It is motivated by the observation that approximately one third of Japanese households own more than one automobile and...

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. To study such consumers' portfolio considerations, this paper develops and...

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. To study such consumers’ portfolio considerations, this paper...

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. To study such consumers' portfolio considerations, this paper develops and...

This study applies an estimator based on inequality restrictions to multivariate discrete choice models and identifies the conditions under which the inequality estimator performs well in small samples and for complex problems.