尊敬的老师,亲爱的同学们:大家上午好!有人做过这样一个实验:将一只跳蚤放进一个敞口的杯子中,它一下子就跳了出去;再将它放进一个带盖的玻璃杯里,它每跳起来一次,就撞到玻璃盖上。经历一次次徒劳的撞击以后,它开始根据盖子调整自己的跳跃高度,直到在杯子里自如地跳动。过了一段时间,当实验者把杯盖拿掉时,这只可怜的跳蚤依旧按照它熟悉的高度不停地跳来跳去。它再也未能跳出这个杯子。为什么跳蚤会愚蠢到这种地步?其实它是受到了“心理高度”的操纵,它已经默认杯盖的高度是自己无法逾越的,它早已被撞怕了,或是已 Dear teachers, dear students: Good morning, everyone had such an experiment: a flea will be placed in an open cup, it jumped out suddenly; then put it into a covered In a glass, it hits the glass lid every time it jumped. After a vain collision, it began to adjust its height according to the lid until it beats freely in the cup. After some time, when the experimenter removed the lid, the poor flea kept jumping and jumping at its familiar height. It never failed to jump out of the cup again. Why fleas will be stupid to this point? In fact, it is by the “psychological height ” manipulation, it has the default height of the cap is insurmountable, it has long been scared of, or