Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.

罗格·伊博森是，我和希勒在管理学院的同事，他在对回报率来源的研究上，做了大量的工作。

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Roger Ibbotson took a look at a larger group of funds -3,500--funds over a ten-year period and found survivorship bias at 2.9% per year and backfill bias at 4.6% per year.

罗杰·伊博森研究了更大的样本组,3500支基金10年间的表现,算出其生存偏差是每年2.9%,回填偏差是每年4.6%

耶鲁公开课 - 金融市场课程节选

Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.

罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作

耶鲁公开课 - 金融市场课程节选

I went back and took a closer look at Roger Ibbotson's data and there are lots of examples that will illustrate this point, but the most dramatic occurs around the crash in October 1929.

我进一步查看了罗格·伊博森的数据,诸多例子都能说明这一点,但是印象最深刻的,发生于1929年10月的那次股灾

耶鲁公开课 - 金融市场课程节选

Now a 67-year-old finance professor at Yale University, Ibbotson thinks he's discovered the answer.

FORBES: Magazine Article

"We get overloaded a bit in closely held companies, especially in Japan, " Ibbotson says.

FORBES: Magazine Article

Roger Ibbotson has devoted a career to answering a question that has defied the greatest minds of finance.

FORBES: Magazine Article