The research centers on what 's called social , or imitative learning .
这项研究以所谓的社会,或者模仿学习为中心。
Borrowing the proto-indo-european root barbar - , imitative of incomprehensible foreign babble , the greeks used the word barbaroi to refer to all non-citizens of their superior state , particularly medes and persians .
More recently , many systematic studies have found that media reporting can lead to imitative suicidal behaviors and that young people and those suffering from depression can be especially vulnerable .