We develop an approach to disentangle the effect of positive and negative advertising on primary and secondary demand. We study these ad tone effects in the context of political advertising using a model of voter turnout and candidate choice. Our central empirical challenge is disentangling ad...

Digital advertising markets are growing and attracting increased scrutiny. This paper explores four market inefficiencies that remain poorly understood: ad effect measurement, frictions between and within advertising channel members, ad blocking and ad fraud. These topics are not unique to...

Presidential elections provide both an important context in which to study advertising and a setting that mitigates the challenges of dynamics and endogeneity. We use the 2000 and 2004 general elections to analyze the effect of market-level advertising on county-level vote shares. The results...

Presidential candidates purchase advertising based on each state’s potential to tip the election. The structure of the Electoral College concentrates spending in battleground states, such that a majority of voters are ignored. We estimate an equilibrium model of multimarket advertising...

We estimate an equilibrium model of dynamic oligopoly with durable goods and endogenous innovation to examine the effect of competition on innovation in the PC microprocessor industry. Firms make dynamic pricing and investment decisions while consumers make dynamic upgrade decisions,...

As high-tech markets mature, replacement purchases inevitably become the dominant proportion of sales. Despite the clear importance of product replacement, little empirical work examines the separate roles of adoption and replacement. A consumer's replacement decision is dynamic and driven by...

As high-tech markets mature, replacement purchases inevitably become the dominant proportion of sales. Despite the clear importance of replacement, little work examines the separate roles of adoption and replacement. The analysis is complicated by the fact that a consumer's decision to replace a...