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We compare statistical and economic measures of forecasting performance across a large set of stock return prediction models with time-varying mean and volatility. We find that it is very common for models to produce higher out-of-sample mean squared forecast errors than a model assuming a constant equity premium, yet simultaneously add economic value when their forecasts are used to guide portfolio decisions. While there is generally a positive correlation between a return prediction model’s out-of-sample statistical performance and its ability to add economic value, the relation tends to be weak and only explains a small part of the cross-sectional variation in different models’ economic value. 相似文献
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This investigation provides new data and commentary on several neglected topics: employment contributions of microbusinesses, characteristics of the selfemployed, business survival rates, and psychological and social aspects of new business ownership. A survey and archival analysis of 413 retail and service establisments that began operation in 1985 is reported. The modal staff size of these establishments was three persons; 28% had no employees. Women, young people, and Latinos were among the larger groups of employees, although employment patterns varied according to size and type of business. The typical owner was male, white, in his 30s or 40s, and relatively inexperienced in business. Fifty-nine percent of the establishments survived two years; survival was associated with corporate ownership, with the owners' reliance on the business for a livelihood, and with their prior employment experience. 相似文献
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Consideration set influences on consumer decision-making and choice: Issues,models, and suggestions 总被引:1,自引:2,他引:1
Allan D. Shocker Moshe Ben-Akiva Bruno Boccara Prakash Nedungadi 《Marketing Letters》1991,2(3):181-197
This paper affords a stylized view of individual consumer choice decision-making appropriate to the study of many marketing
decisions. It summarizes issues relating to consideration set effects on consumer judgment and choice. It discusses whether
consideration sets really exist and, if so, the factors that affect their composition, structure, and role in decision-making.
It examines some new developments in the measurement and modeling of consideration set effects on decision-making. The paper
concludes with suggestions for needed research.
The authors wish to acknowledge the numerous ideas and perspectives contributed by the other members of the Banff Symposium
workshop:Mukesh Bhargava (University of Alberta),Bill Black (Louisiana State University),Gary Gaeth (University of Iowa),Hotaka Katahira (University of Tokyo, Japan),Gilles Laurent (Centre HEC-ISA, France),Irwin Levin (University of Iowa),David Midgley (Australian Graduate School of Management),Thomas Novak (Southern Methodist University), andJames Wiley (University of Alberta). This paper has benefited greatly from their contributions. 相似文献
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This study shows that the wage premium paid by large firms fell over the past 20 years and that this decline in the size premium is most pronounced among the least educated workers. Empirical evidence supports several explanations for the shrinking size premium. First, there has been a convergence in the returns to worker characteristics at large and small firms over time. Second, small and large firms are hiring more workers with similar characteristics. Particularly important are the declining share of workers at large manufacturing firms and the rising share of workers at large retail firms. Also, the greater decline of unionism at large firms has contributed significantly to the decline in the size premium. 相似文献