Competency based training was made popular( Kirka1998) in the US in the70 s through the performance based vocational teacher education involvement.

• 上个世纪70年代，美国的职业教育就强调以实践技能为教育基础，要求从事职业培训教育的老师通过自己的言传身教将实际工作技能传授给学生。