二战期间,美国心理学家在招募的一批行为不良、纪律散漫、不听指挥的新士兵中做了如下试验: 让他们每人每月向家人写一封信, 说自己在前线如何遵守纪律、听从指挥、奋勇杀敌、立功受奖等。结果,半年后这些士兵发生了很大变化,他们真的像信上所说的那样去努力了。这种现象在心理学上被称为“标签效应”。生活中很多人都会遇到失败和 During World War II, American psychologists tried the following among a group of newly recruited soldiers who were unprofitable, disciplined, and unintelligible: Let them write a letter to their families on a monthly basis about how they obey the discipline at the frontline , Obey the command, courageously kill the enemy, meritorious prizes and so on. As a result, these soldiers changed a great deal six months later, and they really worked hard like the letter said. This phenomenon is psychologically called “label effect.” Many people in life will encounter failure and