How to judge a person's personality is defective? First of all, it is normal for a person to have a defective personality. As long as it does not affect your normal study and life, you can control him within a reasonable range. After all, no one is perfect. In fact, you are getting along with people with obvious personality defects.

You will obviously feel a strange feeling different from normal people. For example, some people are grumpy, get angry at every move, or beat people and swear at every move. This can actually make an advanced judgment from their faces or their normal living habits to judge whether a person is inferior.

You can see from the degree of his participation in group activities and his communication with others, and there are selfish people and despicable people who will do little tricks. If such people find out, you should stay away from them. Don't hesitate.