此外，戴夫博士的试验有后续效果——尽管试验过了12个月了，被试验的美国人可以进行他们以前的饮食习惯，但他们仍然坚持饭前喝水；显然他们喜欢这种习惯了。

Moreover, the effect seems to be long-lasting. In the subsequent 12 months the participants have been allowed to eat and drink what they like.

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试验要求他们中的一半人要在三餐之前半小时预先喝水，而另一半人只要在吃饭之前，想象他们的胃里已经饱饱的了。

Half were asked to "pre-load" with water before meals and half were just asked to imagine that they had a full stomach before eating.

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