And studies have found that it helps protect against a decrease in mental ability.

VOA: special.2009.03.24

And this suggests that the ability to learn language and understand language is to some extent separate from these other aspects of mental life.

这表明学习语言和理解语言的能力,在某种程度上是独立于,其他方面的心理活动的

耶鲁公开课 - 心理学导论课程节选

Now he would just like to walk again. TBI can lead to physical disabilities as well as changes in mental ability, personality and behavior.

VOA: standard.2010.05.25