Wouldn't that be sure and swift justice since the plea of guilty is the strongest form of proof known to the law?" Some legal experts continue to raise questions about the validity of the military commissions, even though the Obama administration and Congress have taken steps to give defendants more rights in that process.

VOA: standard.2009.11.25

It turns out that these different smiles have real psychological validity.

这说明这些不同的微笑,有真正的心理学效用。

耶鲁公开课 - 心理学导论课程节选