To reduce or avoid it, researchers have examined the effect of smoking, diet, brain-challenging games, exercise and other strategies.

为了减缓或者避免认知能力的衰退，研究者们调查了抽烟、饮食、脑力挑战游戏、运动以及其他策略的效果。

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But only recently have scientists examined whether the effect is real.

但直到最近科学家们才研究了这个偏方效果的真实性。

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It detected such a link in Africa (though there have been arguments about its methods, and a string of relatively conflict-free years after the period examined weakens the effect).

其在非洲发现了该种联系(尽管就其方法存在争议，并且在该周期后的一些相对的无冲突年份削弱了这种效应)。

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To reduce or avoid it, researchers have examined the effect of smoking,diet, brain-challenging games, exercise and other strategies.

VOA: standard.2010.06.17

The poll, taken June 9-July 13, also examined the effect of race in the 2008 election.

CNN: Poll: 'Sharp reversal' for Obama with Latino voters

Dr Feher and his colleagues examined the effect of two chemotherapy drugs - epirubicin and gemcitabine - on women aged 60 years and older.

BBC: Cancer care 'ageist'

Dr Duif has examined various conventional explanations for the Allais effect.

ECONOMIST: Gravitational anomalies