心理学研究中，t分数3.0表示两组被试的反应时间存在显著差异。

In the psychology study, a ___t-score of 3.0 showed a significant difference in reaction times between the two groups.

他的t分数是40，意味着比全国平均水平低一个标准差。

His ___t-score of 40 indicated he was one standard deviation below the national average.