实证测试采用长窗期（15个月）回归进行投资组合测试(portfolio tests)，并以解释变异能力R2分析样本期间的总投资组合报酬。
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草案试验法(Portfolio tests)受测人阅读草案,时间不拘,再请受测人就记忆所及,说明各草案的内容。
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（2）组合测试法 (portfolio tests) （3）实验室测试法 (laboratory tests)
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An asset class must pass all three tests to be included in a portfolio.
FORBES: How to Pick Asset Classes
Alternatively, their teachers can submit results from national curriculum tests, while the children compile a portfolio to demonstrate their all-round creative and intellectual skills.
BBC: Bringing on the brightest
Nothing tests the mettle of a value investor like watching a large portfolio holding slowly and steadily melt down.
FORBES: Two Celebrated Investors Want To Fix Their Funds--And Chesapeake Energy
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