Source: http://www.mentalhealth.com/dis1/p21-pe02.html

Schizoid Personality Disorder: A pervasive pattern of detachment from social relationships and a restricted range of expression of emotions in interpersonal settings, beginning by early adulthood and present in a variety of contexts, as indicated by four (or more) of the following:

* neither desires nor enjoys close relationships, including being part of a family
* almost always chooses solitary activities
* has little, if any, interest in having sexual experiences with another person
* takes pleasure in few, if any, activities
* lacks close friends or confidants other than first-degree relatives
* appears indifferent to the praise or criticism of others
* shows emotional coldness, detachment, or flattened affectivity
Do some of these sound like the traits of an INTJ?!