A study led by Yale Professor of Psychology, Paul O'Keefe, found that having a growth mindset of interest may spark this type of innovation.

耶鲁大学心理学教授保罗·奥基夫带领的一项研究发现，拥有兴趣增长型思维的人可能会激发这种类型的创新。

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Researchers measured brain activity of 47 healthy adults -- a small but scientifically valid size group for this type of study -- while using a mobile device.

CNN: Cell phone exposure increases brain cell activity

They are concentrating on a study of stable isotopes - atoms of the same type but with different masses - and trace elements in the birds' feathers.

BBC: Feathers clue to warbler's travels

This type of study, known as a meta-analysis, can highlight problems that no single study typically can.

CNN: Diabetes increases cancer mortality risk