语言能力

Command of the mother tongue is the most distinguishing mark of the educated man or woman.

运用本国语言的能力是受过教育的人最明显的标。

According to Brinkman, as the brain evolved, one side became specialised for fine control of movement (necessary for producing speech) and along with this evolution came righthand preference.

Brinkman，认为的大脑发展，一面变得专门很好的控制行为(生语言能力的需要)并且沿着这种发展成为惯用手好。