ON THE COMPETITIVE FIRM UNDER PRODUCTION UNCERTAINTY*

Risky production functions which are commonly in use are shown to be very restrictive. In particular, such functions cannot describe technologies where inputs marginally reduce risk. A simple production function which avoids these restrictions is posited and alternative estimation procedures are discussed. Both maximum likelihood and multistage estimators are discussed.     

The characteristics of firms subject to adverse rulings by the Financial Reporting Review Panel

This study presents evidence on the characteristics of firms judged by the Financial Reporting Review Panel (FRRP) as having published defective financial statements. Relative to a pairwise-matched control sample, FRRP firms are associated with weak performance in the defect year. In contrast, their performance in the post-defect period is indistinguishable from that of the control sample, suggesting that rather than being perennial underachieves, FRRP firms are average performers suffering temporary performance difficulties. FRRP firms are also less likely to have a Big Five auditor. Weaker evidence is also presented that FRRP firms are less likely to have an audit committee and a high proportion of outside directors. In contrast, their remaining governance characteristics are largely indistinguishable from those of the control sample. Moreover, there is no evidence that public censure by the FRRP leads to a higher incidence of executive turnover in subsequent years.     

Research and Development Activity and Expected Returns in the United Kingdom

Fama and French (1992) show that size and book-to-price dominateCAPM beta and other variables such as the price-earnings ratioand dividend yield in explaining the cross-section of US stockreturns. Comparable evidence for the UK points to a book-to-priceeffect, but not a size effect (Chan and Chui, 1996; Strong andXu, 1997). In this paper, our first contribution is to showthat a measure of research and development (RD) helps explaincross-sectional variation in UK stock returns. Our cross-sectionalresults on the association between stock returns and RD areconsistent with recent US evidence reported by Lev and Sougiannis(1996, 1999) and Chan, Lakonishok and Sougiannis (2001).Famaand French (1993, 1995, 1996) also show that a three-factormodel captures a high proportion of the time series variationin portfolio returns, again for the US. Our second contributionis to show, for the UK, that a modification to the three-factormodel to take account of RD activity can significantly enhancethe explanatory power of the three-factor model. We show that,as a practical matter, estimated risk premia based on the modifiedthree-factor model can differ considerably from risk premiaestimated using the CAPM or the three-factor model. In particular,risk premia for industries in which few firms undertake RD activitiestend to be over-estimated.     

Homogeneity and Supply

Supply functions in the ubiquitous Gorman class are examined for their homogeneity properties. Homogeneity places surprisingly strong restrictions on functional forms. These forms facilitate testing of aggregability given homogeneity or homogeneity given aggregability or testing both.