Shame is a complex emotion that emerges with self concept at about age 2. It is also a component in one's sense of morality. "羞耻感是当人看到自己是失败的"--not entirely, failure is not the only cause for the emotion of shame. Shame will be felt when parents said not to do the wrong thing but you still did it: you know you did something wrong,therefore you are shamed of yourself.
毋庸置疑,西西妈是个伟大的parenting实践家,但在理论上,目前看来还比较缺乏完整系统;不过通过努力,有望自学成才。