One night over dinner I talked with a good ISTp friend about the personal issues he was facing. We went through his issues in a method more rational than not, but not so much that we were both divorced from each other's experiences. He seemed fairly eager to explain his emotional standpoint on the situation, but not so much actively demonstrate his feelings to me. He seemed very honest and forthcoming about himself, so there was no need for him to go "LOOK AT HOW SAD I AM." He did seem to have much more at stake then "just trying to fix a problem;" sure he wasn't maudlin about it, but I could tell that the issue was eating him up. He's not a particularly business-oriented person to begin, much more wanting to look at things positively; perhaps to a detriment, as he seems to have trouble acknowledging that a problem exists, instead just laughing things off. Regardless, he's much more able and wanting to relate to others on a personal level than I think most ISTps are written as being, likely because he's Sx first.