Business as Usual: A Consumer Search Theory of Sticky Prices and Asymmetric Price Adjustment

Empirical evidence suggests that prices are sticky with respect to cost changes. Moreover, prices respond more rapidly to cost increases than to cost decreases. We develop a search theoretic model which is consistent with this evidence and allows for additional testable predictions. Our results are based on the assumption that buyers do not observe the sellers costs, but know that cost changes are positively correlated across sellers. In equilibrium, a change in price is likely to induce consumer search, which explains sticky prices. Moreover, the signal conveyed by a price decrease is different from the signal conveyed by a price increase, which explains asymmetry in price adjustment.

SUPeRB: Building bibliographic resources on the computational processing of Portuguese

PROPOR 2008 Special Session: Applications of Portuguese Speech and Language Technologie

Incentive regulation : evidence from German electricity networks

We propose a difference-in-differences (DiD) approach to estimate the impact of incentives on cost reduction. We show theoretically, and estimate empirically, that German electricity distribution system operators (DSOs) incur higher costs when subject to a lower-powered regulation mechanism. The difference is particularly significant (about 7%) for firms in the upper quartile of the efficiency distribution, a pattern which is consistent with the pooling of types under the threat of ratcheting