The emergence of online labor markets calls the validity of traditional career models into question. Given the volatility and digital nature of this environment, short-term employment relationships and heterogeneity of workers, employers and tasks in these markets, it is unclear how careers...

In this paper, we study the dynamics of usage intensity of second-generation cellular telephony over the diffusion curve. We address two specific questions: First, does information about usage intensity over time allow us to draw conclusions about the underlying drivers of technology diffusion?...

We document the evolution of product innovation and features in the mobile telephone handset market. We distinguish between two types of product innovation: vertical and horizontal innovation. Using data from 1990 - 2003, we find that some characteristics have subsequently become an industry...

This paper focuses on the effects of within and between standards competition and competition between firms on the performance of an emerging new technology, digital mobile telecommunication (2G). Our empirical exploration provides a more complete picture of the market dynamics of digital mobile...

We study the dynamics of usage intensity of second-generation cellular telephony over the diffusion curve. Specifically, we address two questions: First, can we draw conclusions about the underlying drivers of technology diffusion by studying usage intensity? Second, what is the effect of high...

In this paper, we study the dynamics of usage intensity of second-generation cellular telephony over the diffusion curve. We address two specific questions: First, does information about usage intensity over time allow us to draw conclusions about the underlying drivers of technology diffusion?...

We document the evolution of product innovation and features in the mobile telephone handset market. We distinguish between two types of product innovation: vertical and horizontal innovation. Using data on mobile telephone handsets from 1990 to 2003, we study the emergence of a dominant design...