Independent, focused, and detail-oriented are among a few of those great qualities. Those abilities are enhanced by their preference for quiet environments with low social interaction. When interacting, they do have not many friends but tend to focus on good quality relationships. Hence, making them long-term quality ones. Such solid relationships are also the basis of a successful career. Preferring written instead of verbal communication lets them be more prepared for presenting the results of their findings and drawing conclusions from their research.