INTJs are usually difficult to get to know well, and difficult to get close to. Those who are close to the INTJ will highly value them for their ideas and knowledge. Although INTJs are generally very serious-minded people, they also have been known to enjoy letting loose and having fun, if others pull them into it. They also can be really good at telling jokes, and exhibiting a sarcastic wit with a poker face.

The INTJ is not likely to choose to spend time with people who they feel don't have anything to offer the INTJ. They especially like to spend time with other Intuitive Thinkers, and also usually enjoy the company of Intuitive Feelers. These personality types love to theorize and speculate about ideas, and so can usually relate well to the INTJ, who loves to analyze ideas.

Many INTJs believe that they are always right. In some INTJs, this belief is quite obvious, while in others it is more subtle. Some people may have a difficult time accepting what they see as a "superior attitude" or "snobbery". Not to imply that INTJs are snobbish, just that some people with strong Feeling preferences may perceive them that way. And some individuals simply have no interest in the theoretical pursuits which the INTJ enjoys.