INTJ PERSONALITY It’s lonely at the top, and being one of the rarest and most strategically capable personality types, INTJs know this all too well. INTJs form just two percent of the population, and women of this personality type are especially rare, forming just 0.8% of the population – it is often a challenge for them to find like-minded individuals who are able to keep up with their relentless intellectualism and chess-like maneuvering. INTJs are imaginative yet decisive, ambitious yet private, amazingly curious, but only if their interest is piqued.