The researchers add that their findings should be considered preliminary, in part because the study group was so small, particularly the number of women with anorexia.

研究人员称，由于研究对象数量有限，尤其是其中患厌食症的女性数量较少，因此他们的研究还仅处于初级阶段。

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But more work will be needed to confirm the result, says Tony Dayan, an emeritus professor of toxicology, because the study was based on a small, distinctive group.

已退休的毒理学教授托尼达扬称，确认该研究成果还需付出更多努力，因为研究只是基于一个狭小，特殊的群体。

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It's also worth pointing out that the study involved a relatively small sample of girls: 83 in total, which doesn't seem like a large enough group to form any definitive, universal conclusions.

再一个值得指出的是，该项研究涉及了一个相对较少数量的女孩样本：总计83名，这似乎不是一个足够大的群体，不足以得出可靠通用的结论。

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The small group study has made her a better mom, wife and friend, she says.

CNN: Busy moms learn how to balance family and faith

The problem is when someone make such over generalization statement which a small group study without providing any information on exactly how the group intelligence was rated.

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This will include classes and lectures, but also a great deal of independent or small-group study.

ECONOMIST: Private education