How to find out the character of a person

The phrase that there are no two identical people — banal truth. Nevertheless, the vast majority of us are used to adjusting our behavior, adjusting to the generally accepted framework. But there are situations when we just need to know the character of a person in order to decide whether to continue communication with him and establish business contacts. Indeed, in some areas of activity, the behavioral characteristics of a person are very important, and not just his professional qualities.