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In the finance and accounting literature, the use of a common divisor in the dependent and independent variables of ordinary least‐squares regressions is commonplace. What goes less recognized, however, is that their use induces spurious correlation between the regression variables and invalidates standard testing procedures. This paper analyses the common divisor problem by outlining analytical results concerning the expected R2 and providing a simulation procedure that generates test statistics from which critical values can be drawn. To illustrate the procedure, we re‐investigate payout yield return predictability findings that have appeared in the literature and show that the results are spurious. 相似文献
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The mutual fund industry has experienced tremendous growth in recent years. During this time period mutual funds have become somewhat of a commodity with many funds using advertising to attract investors. The current study uses content analysis to determine the informational content of fund advertising. The results indicate that while the average number of informational cues increased during the time period 1979 to 1989, there was no significant increase in the information content of mutual fund advertising between 1989 and 1999. Relatively few funds include information such as loads, 12b‐1 fees, and expense ratios in their advertisements, and fund ads rarely discuss risk. 相似文献
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LARRY C. GIUNIPERO ROBERT E. HOOKER SACHA JOSEPH‐MATTHEWS TOM E. YOON SUSAN BRUDVIG 《Journal of Supply Chain Management》2008,44(4):66-86
This study covers a decade of academic research in the Supply Chain Management (SCM) field, offering an in‐depth analytical review focused on the existing trends and gaps in the supply chain literature. Nine academic journals were investigated and a subject categorization is developed for SCM research. A content analysis was then conducted on 405 articles, focusing on the categories covered within the SCM literature, various levels of the chain examined and sample populations and industries studied, as well as the research methods employed. Finally, a conceptual framework of the most highly researched categories in SCM indicates that there is a need for more research that seeks to understand the nature of multiple links in SCM chains and networks, as opposed to focusing on dyadic and inter‐firm relationships. 相似文献
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This paper asks whether the degree to which our incomes resemble our parents’ incomes has changed over time. After comparing various methods of correcting for differences in the ages at which successive birth cohorts are observed, and correcting for sample attrition, I find no evidence of a linear trend in the intergenerational elasticity of family income for those born into the Panel Study of Income Dynamics between 1952 and 1975 and observed as adults between 1977 and 2000. 相似文献