Subjects are told to watch a video of two teams - one wearing white shirts, the other black - passing basketballs, and to count the number of times the white team passes the ball.

在他的实验中，实验者被要求观看一部录像，内容是分别穿白衬衫和黑衬衫的两组队员打篮球，实验者被要求记录下白队传球的次数。

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Longitudinal data such as repeated measurements taken on each of a number subjects over time arise frequently from many biomedical and clinical studies as well as from other scientific areas.

纵向数据例如在每一采取的重复的测量数字服从频繁地随着时间的过去出现从许多生物医学和临床研究以及从其他科学区域。

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