美国心理学家施皮茨曾研究过失去母亲的婴儿身上所发生的变化。他的询查是在两个地方进行的,一个是保育室,那些孩子的母亲都在监狱里服刑,但允许她们到保育宣来照看自己的孩子,并向婴儿提供充足食物、住房和医疗护理。另一个地方是育婴堂,条件要优越些。育婴堂位于城外的花园里,每个婴儿的饮食都是 Spitz, a psychologist in the United States, studied the changes that have taken place in mothers who lost their mothers. His inquiry was conducted in two places, one in the nursery, where the mothers of those children served their sentences in jail, but allowed them to come and nurture to take care of their children and provide babies with adequate food, shelter and medical care . Another place is Yuying Tang, the conditions should be superior. The baby-sitting hall is located in the garden outside the city and every baby’s diet is