You requested a “quick” technique to recognize a manipulative person. Here it is short and sweet.

If the person talks too much and tries to dominate the conversation with their words, it is because they are trying to monopolize your thought processes. A manipulator will always try and out-talk you by constant dominance of a conversation.

This is the fastest and simplest way to recognize a manipulating person. There are of course other definitive ways, but you cannot manipulate another if you don’t dominate them in one way or another.

Source: QUORA