A problem with both these studies is that participants in both groups were self-selected.

这些研究的共同问题在于两组的参与者都是自我选择的。

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One group of teens ate self-selected low-calorie meals not exceeding 1,300 to 1,500 total calories per day.

一组肥胖少年采用自选的低卡路里餐，每天摄入的卡路里总量不超过1300至1500。

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Study limitations included the observational nature of the study and the fact that aspirin use was self-selected.

研究的范围包括研究的观察本质和阿斯匹林的使用是自我选择的事实。

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If you stay within those confines, your network remains fairly constant and self-selected.

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Demand creation is shifting to self-selected, visual-social feeds on networks such as Pinterest.

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The online survey, by Nationwide Financial, questioned a small, self-selected sample of advisers, so the results may not be representative.

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