The researchers then measured their reaction to another participant (actually a research associate) who turned up late and thus needed help with the experimental procedure.

然后研究者观察他们对另一个迟到，并且实验过程需要帮助的参与者(实际上是研究人员的同伴)的反应。

youdao

The researchers then measured their reaction to another participant (actually a research associate) who turned up late and thus needed help with the experimental procedure.

ECONOMIST: They are more selfish