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Genetics Predisposes for Heavy Drinking After Watching Heavy Drinking

遗传因素易使人看到别人酗酒后而酗酒

Spend any time in a bar, and sooner or later you'll hear, "I'll have what she's having." It sounds like a bad pickup line, but there may be an actual biological basis for this kind of alcohol copycat behavior. Because scientists have found that having the gene for a certain dopamine receptor could predispose you to being influenced by the sight of other people drinking.

你若在酒吧里打发时间，就迟早会听到有人说：“给我来一杯她点的那种饮料。”这听起来像是个老掉牙的泡妞烂招，但或许这就是有关酒精模仿行为的一个切实的生物学基础。因为，科学家们发现，具有某种多巴胺受体的基因会使你易于被视线内的其他饮酒者所影响。

Volunteers were ushered into a lab set up to look like a pub. They were asked to do some busywork, then told that during the break they should help themselves to some adult beverages. While they watched, shills planted by the scientists immediately liquored up.

研究人员将志愿者们引进一个布置成酒吧样的实验室，并要求他们不忙也装出忙忙碌碌的样子，然后告诉他们在休息时间可以给自己来点带酒精的饮料。当志愿者四顾观察时，由研究人员安插进去的“托”儿就立刻狂饮起来。

The study subjects were then tracked to see how much they drank after watching others toss them back. When the plants could be seen having just one drink, all the subjects drank similar amounts. But when the plants had at least three drinks, some participants drank twice as much as others. And DNA tests showed that the heavier drinkers had a particular variant of a dopamine receptor called DRD4. The work appears in the journal Psychological Science.

而此时，研究对象在观察了其他人饮酒之后，就会目光紧随着这些托儿，看看他们会喝下多少。当这些托儿只喝了一杯时，所有的受试者都会喝下等量的酒精饮料。而当托儿们喝下至少三杯后，一些受试者就会比其他人多灌下两倍的量。而DNA测试表明，饮酒较多的受试者携带有一种叫做DRD4的多巴胺受体的特殊变体。该研究的报告发表在《心理科学》杂志上。

Next, the search for genes that make people order drinks with those little umbrellas.

那么，究竟是什么基因使得人们会点鸡尾酒呢？这将是科学家们要在下一步所做的研究。

-Karen Hopkin

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