Piaget's example would be a baby who's used to sucking on a breast might come to suck on a bottle or on a rattle.

皮亚杰举例说,一个习惯吸吮乳房的婴儿,可能会去吸吮奶瓶或是拨浪鼓

耶鲁公开课 - 心理学导论课程节选

Similarly, if you're dealing with immature humans and you want your child to get you a beer, you can't just sit, wait for the kid to give you a beer and uncap the bottle " and say, "Excellent. Good. Hugs."

类似的，如果你要训练的是未成年人,如果你想让你的孩子帮你拿一罐啤酒，你就不能只是坐着，等孩子把啤酒拿给你,然后你打开瓶盖,说，“太棒了，来抱一下“

耶鲁公开课 - 心理学导论课程节选