Personality type

Introvert(22%)  Sensing(9%)  Thinking(3%)  Judging(31%)

As do other Introverted Thinkers, ISTJs often give the initial impression of being aloof and perhaps somewhat cold. Effusive expression of emotional warmth is not something that ISTJs do without considerable energy loss.

• I do think this is accurate in the way that I do lose energy and feel very drained from being in large groups or expressing emotion. I may seem cold or emotionless but most of the time I just need to be by myself.

Once a new procedure has proven itself (i.e., has been shown "to work,") the ISTJ can be depended upon to carry it through, even at the expense of their own health.

• I like to make sure things work and once I know that they do I will continue to do things that way until I find a way that works better. I am very efficient and hard working and want to do everything the right way. 

ISTJs are easily frustrated by the inconsistencies of others, especially when the second parties don't keep their commitments. 

• This is definitely one of the descriptions that I identify with very well. I hate when people back out on something that they have committed to, no matter what the excuse is. 

The grim determination of the ISTJ vindicates itself in officiation of sports events, judiciary functions, or an other situation which requires making tough calls and sticking to them.

• I will always make a decision that I see as the most fair and just even if it hurts others. I want everything to be equal even if the decision is tough.