Ambiguity is pervasive in many environments and is increasingly being introduced into economic and financial models. This paper characterises ambiguity in the form of newly defined Choquet random walks: discrete-time binomial trees with capacities instead of exact probabilities on their...

Innovation is typically a trial-and-error process. While some research paths lead to the innovation sought, others result in dead ends. Because firms benefit from their competitors working in the wrong direction, they do not reveal their dead-end findings. Time and resources are wasted on...

We propose to analyse the hyperbolic discounting preferences effect on the innovator's research investment decision. Investing in research allows him to acquire information, and then to reduce the uncertainty of the risks of his project. We find that whatever the innovator's preferences, that is...

Developing the "right" new products is critical to firm success and is often cited as a key competitive dimension. This paper explores new product development (NPD) portfolio strategy and the balance between incremental and radical innovation. We characterize innovative effort through a...

Employees' incentive to invest in their task proficiency depends on the likelihood that they will execute the same tasks in the future. Changes in tasks can be warranted as a result of technological progress and changes in firm strategy as well as from fine-tuning job design and from monitoring...

We study robustness of the model of demand driven innovation and spatial competition over time with log-concavely distributed signals in Jovanovic and Rob (1987) to heavy-tailedness assumptions. We demonstrate that implications of the model remain valid for not extremely heavy-tailed...

Local density (the number of firms vying for similar resources in a local environment) has been overlooked in explaining foreign subsidiary performance. This study draws upon the literatures on liability of foreignness and density dependence to examine how local density within the host country...

Instructional presentation slides.What drives innovation, risk taking, and investment booms? We study these phenomena using a model of decision making by firms that make biased observations of prior returns. We assume that firms are more likely to observe large successes than small successes or...

For serial multi-echelon systems subject to production capacity limits at every stage, we consider a class of modified echelon base stock (MEBS) policies. To evaluate information requirements of such systems, we consider two separate inventory management mechanisms operated in a decentralized...

We develop a dynamic principal-agent model to show how imperfect public information and asymmetric beliefs about payoff-relevant parameters, agency conflicts, and the agent's implicit incentives to influence the principal's posterior beliefs through his unobservable actions interact to affect...