Because of increasing levels of competition and decreasing product life cycles, a firm's ability to generate a continuous stream of innovations may be more important than ever in allowing a firm to improve profitability and maintain competitive advantage This paper investigates several issues that are central to an examination of the innovation productivity in a firm. First, the relationship between a firm's commitment to research and development and its innovative outcomes is examined. Two innovative outcomes are analyzed: (1) invention, which focuses on the development of new ideas; and (2) innovation, the development of commercially viable products or services from creative ideas. Invention is measured by the number of patents granted, and innovation is assessed by the number of new product announcements. Second, because many inventions ultimately result in marketable innovations and because patents may provide protection for new products, the relationship between patents and product announcements is also investigated. Finally, the ability of a firm to benefit from its inventions and innovations is studied by examining their separate effects on firm performance, measured as return on assets (ROA) and sales growth. Drawing from a sample of 272 firms in 35 industries over 19 years, the results from a model of simultaneous equations provided support for some of the hypotheses, but several other surprising findings were found. As expected, R&D spending was positively related to patents. This finding is consistent with others who argue that internal research capabilities, particularly those with a strong basic research component, is key to enabling a firm to generate creative outputs. More surprising was the finding of increasing returns to scale to R&D spending. While this contradicts much of the existing research, it is consistent with economic arguments for the advantages of scale in innovation. Also interesting is the finding that, while a significant curvilinear relationship exists between R&D spending and product announcements, it is not the predicted inverse-U but instead a U-shaped relationship. Consistent with previous work, product announcements were found to be positively related to both performance measures. A negative relationship was found between patents and both ROA and sales growth. While these findings were unexpected, they are intriguing and call into question the value of patents as protection mechanisms. In addition, these results may be resulting from the rise of strategic patenting, where an increasing number of firms are using patents as strategic weapons. As expected, a positive relationship was found between patents and new product announcements.

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Economic development and social entrepreneurship often conceive of poverty as a resource allocation problem in which a lack of capital prevents the poor from increasing their income through entrepreneurship. This allocative view, however, represents only one possible approach to conceptualizing entrepreneurial opportunity. The alternative discovery-and creativity-based views place a greater emphasis on innovation which implies that superior ideas are also needed if poverty is to be reduced through firm performance. Drawing from a survey of 201 small business owners involved in a microcredit programme in Nairobi, Kenya, we find that the financial, social, human capital-performance relationships are mediated in part by innovation. Further, we find that differentiation-related innovations lead to better firm performance than novelty-related innovations.

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The paper investigates the contingencies which define valuable resources in professional medical services. We identify activities with credence, experience, and search qualities in medical service industries in general, and in veterinary practices more specifically. We propose that different capabilities are needed to deliver different services and test whether the contingent combination of capabilities for particular services is linked to the performance of veterinary practices. For example, we expect that practice capabilities which help to retain clients are necessary for the successful delivery of services with experience qualities. We find evidence of performance benefits of client retention in a sample of 193 veterinary practices. We also find that in markets where competition from a new form of entrant is especially intense, an independent veterinarian's credence activities combine with its experience and search activities to jointly improve practice profitability. Since the new entrants' resources are mainly effective in the delivery of services with search qualities, the practice capabilities of the independent veterinarians that allow them to offer services with credence and experience qualities can be seen as a type of isolating mechanism.