有这样一个心理学实验。心理学家叫来十几个普通人,给每人一卷细长的纸,让他们在纸上画笑脸,要求画两条横线当眼睛,一条竖线当鼻子,最后再画一条两头对称的曲线当嘴巴。心理学家要求参加者把整条长纸都画满这样的笑脸。所有的参加者都认为这个任务很简单,一开始画的时候,速度非 There is such a psychological experiment. Psychologists called a dozen ordinary people to give each a roll of slender paper so that they draw a smile on the paper, asked to draw two horizontal lines when the eyes, a vertical line when the nose, and finally draw a two symmetry Curves when the mouth. Psychologists asked participants to paint the entire piece of paper with such a smile. All participants considered the task as simple as when it was first painted, at a non-speed