We model a firm's decisions about product innovation, focusing on the extent to which features should be improved or changed in the succession of models that comprise a life cycle. We show that the structure of the internal and external environment in which a firm operates suggests when to...

This paper is motivated by the claim that promotion probabilities are lower for women than men. Using data from the 1984 and 1989 National Longitudinal Youth Surveys, this paper tests this claim and two related hypotheses concerning training and ability. It is found that females are less likely...

Teaching Innovations in Economics presents findings from the Teaching Innovations Program (TIP) funded by the National Science Foundation. The six-year project engaged economics professors in the use of interactive teaching in undergraduate economics courses. Each chapter offers an insightful...