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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A second difference is that although professional education isconcerned exclusively with the individual, a quality business education dependsin a distinctive way on the peer group.

第二个不同点是，尽管专业教育仅仅与个人有关，但是高质量的商业教育以一种独特的方式依赖于朋辈。

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The larger the social group, the more distinctive the voices were.

社会群体越大，声音的独特性就越强。

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This identification of a distinctive group of aggrieved young men emerged from the Youth Matters survey, carried out for the O2 telecommunications company, and analysed by Prof Chapman, who has researched young people and social mobility.

BBC: 'Angry young men' lack optimism

Pavan Varma, the director-general of the Indian Council for Cultural Relations, also thinks that in at least one respect the middle class of his own country behaves more like members of its elite than as a distinctive group of its own.

ECONOMIST: Beyond Wisteria Lane

None of the well-known portals have tried to make themselves distinctive by appealing to a particular group, in the way that most other media do, preferring to be all things to all people.

ECONOMIST: When the bubble bursts