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研究发现，智商和股市参与度存在直接关联。换言之，越聪明的人，持有的股票可能更多。参与研究的Newport Beach首席投资师Jason Hsu说，智商越高的人更愿意投身金融市场。人们回避股市，归根结底可以联系到金融信息处理成本。
经济学家们长久以来一直好奇，既然股票从长期来看收益要高于储蓄，人们还是不愿投身股市。美联储2009年的一份调查显示，仅51%的美国家庭持有股票。
研究人员写道，在收入最高的10%的受调查人群中，智商直接决定了股市参与程度。在同样的高收入人群中，智商较低的股市参与度要比高智商的低了15.7%。如果再加上智商和收入之间的关系，智商对股市参与度会有更大的影响。
Smarter people own shares, study finds
http://www.theage.com.au/business/world-business/smarter-people-own-shares-study-finds-20120119-1q7lz.html
The smarter you are, the more stock you probably own, according to researchers who say they found a direct link between IQ and equity market participation.
Intelligence, as measured by tests given to 158,044 Finnish soldiers over 19 years, outweighed income in determining whether someone owns shares and how many companies he invests in. Among draftees scoring highest on the exams, the rate of ownership later in life was 21 percentage points above those who tested lowest, researchers found. The study, published in last month's Journal of Finance, ignored bonds and other investments.
Economists have debated for decades what they call the participation puzzle, trying to explain why more people don't take advantage of the higher returns stocks have historically paid on savings. As few as 51 per cent of American households own them, a 2009 study by the Federal Reserve found. Individual investors have pulled record cash out of US equity mutual funds in the last five years as shares suffered the worst bear market since the 1930s.
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"It's what we see anecdotally: higher-IQ investors tend to be more willing to commit financial resources, to put skin in the game," said Jason Hsu, chief investment officer of Newport Beach, California-based Research Affiliates LLC. "You can generalize a whole literature on this. It seems to suggest that whatever attributes are driving people to not participate in the stock market are related to the cost of processing financial information."
'So Strong'
While intelligence influenced things that might naturally increase equity ownership such as wealth and income, the authors said IQ determined who owned the most stocks within those categories as well. Among the 10 per cent of individuals with the highest salary, "IQ significantly predicts participation" in the stock market, they wrote. For example, people in the highest-income ranking who scored lowest on the test had a rate of equity market participation that was 15.7 percentage points lower than those with the highest IQ.
"If you look at the significance of IQ related to other factors like income or wealth, certainly it plays a very large role," Keloharju, a finance professor at Aalto, said in a phone interview. "It's very difficult to get around that problem, but the results are so strong here. We are playing with lots of different controls and lots of different specifications, and all the time things work really well."
Financial Education
Hsu of Research Affiliates said an explanation for why draftees with lower test scores owned less stock is that they found it harder and more expensive to receive financial education. Getting people information on investing at a younger age may help limit the disparity, he said.
"The costs to achieve that are certainly higher if someone isn't providing that at an earlier stage in one's education," said Hsu. "If we could provide advice, or provide education, to help reduce the cost of acquiring financial knowledge, that would seem like a good thing."
The paper is part of a broader debate about the role individual characteristics such as affluence and education play in investor actions. In the 1980s, so-called behavioral economists broke away from theorists such as Sharpe, who tended to think of all investors as rational.
Greg Davies, head of behavioral finance at Barclays Wealth in London, said his team tries to gauge clients' risk tolerance with personality profiles and investment strategies that appeal to "emotional needs."
Implications
"As advisers, of course, we see our role in overcoming the irrational, emotional, inaccurate elements on behalf of our clients," said Davies. "But the implications of this for the mass markets are much greater."
Markowitz said the argument that intelligence and personality sometimes trump rationality in guiding investors has little bearing on his work. His theory comes down to the view that anyone hoping to get the highest payout at the lowest risk should broaden their asset ownership.
"It's advice for the individual investor," Markowitz, 84, said in a telephone interview. "I am delighted to learn the more intelligent a person is, the more likely they are to act in the spirit of what I wrote."
[ 本帖最后由 一炷香 于 2012-1-19 17:16 编辑 ] |
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衣衣搭配系列1 (2005-5-22) 短腿小鳄鱼 
发表于 2012-1-19 17:09
发表于 2012-1-19 21:11
