斯坦伯格和加德纳随机分配了一些参与者，让他们单独玩或者让两个同龄的同伴看着他们玩。
Steinberg and Gardner randomly assigned some participants to play alone or with two same-age peers looking on.
区域电话，区域号码：如美国及加拿大，通常有三个阿拉伯数字的数码，分配给一个电话区，当向该区打电话时使用。
A number, often with three digits, assigned to a telephone area, as in the United States and Canada, and used when placing a call to that area.
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