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This study demonstrates that the measurement of technological change and economic efficiency are tightly linked. Efficiency measures may depend on carefully controlling for technological change, while tests of technological change may be sensitive to empirical model specifications. Moreover, the study underlines Solow's (1994) and Romer's (1994) admonition that econometricians should pay attention to industry and institutional evidence in building models of technological change. The empirical results presented here suggest that there has been substantial technological change in the U.S. brewing industry from 1950 to 1992. This occurred in the form of a dramatic shift in technology beginning with the introduction of super breweries in about 1972. There has also been a substantial increase in scale economies, which undoubtedly caused many inefficiently small firms to exit the industry during the 1960s and 1970s. Further results suggest that a more complete specification of technological change and the stochastic nature of the frontier production function leads to higher and more tenable estimates of efficiency.  相似文献   
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We examine markets where, in addition to production of standard (core) products, mass customization is technologically feasible. We compare a setting where a monopolist provides both standard and custom goods to a setting where an entrant joins the custom market and find customers' tastes affect the social desirability of entry. The entrant is unconcerned about the impact of its custom production on the incumbent's core product market and in some cases may supply more custom products than is socially desirable. Entry enhances (reduces) social welfare if consumers' core valuations are positively (negatively) related to their value added for customization.  相似文献   
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In this study, we investigate the effects of retirement planning on the economic and psychological factors of consumers using a large sample drawn from the 2012 National Longitudinal Survey of Youth. Specifically, we examine the combined impact of risk tolerance, financial literacy, savings, income, and debt on consumers’ retirement planning behavior. Risk tolerance, financial literacy, income, and savings are all found to have positive relationships with retirement planning, though debt has no significant relationship with retirement planning. Also, higher levels of risk tolerance weaken the relationship between savings and retirement planning. Implications of these findings for the literature and the financial planning industry are provided as well as directions for future research.

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