The user may need increasing amounts to get the same effect.

VOA: special.2009.02.10

What's particularly interesting is you get this effect easily with undergraduates but you also get it with four-year-olds and with monkeys.

但这个实验有一个很有趣的地方,在本科生中做这个实验，很容易就得出这个结果,而在四岁小孩和猴子中，同样能得到这个结果。

耶鲁公开课 - 心理学导论课程节选

The more salient we make the source of the arousal, the less likely you can get the effect.

我们越突现觉醒原因，越不可能获得这个效果。

耶鲁公开课 - 心理学导论课程节选

And eating less isn't the only way to get this effect, Greenwood said.

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You get the effect of a short put position without shorting anything.

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"You have to drink a lot of it ... at least three, up to six cups a day, to get the effect, " Tallmadge says.

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