While the Heimlich maneuver is a good thing to know, Dr.Gary Smith,a pediatrician, says many foods that are thought to be kid friendly are actually dangerous like grapes,popcorn,nuts, bratwurst and hot dogs.

VOA: standard.2010.02.23

You're such a good kid.

说道，“你真是个好孩子。

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