Generally, we human can be differentiated into sub-category as followings....

Extraversion and Introversion
We are extraverting when we: Talk to other people ,listen to what someone is saying,cook dinner, or make a cup of coffee
We are introverting when we: Read a book ,think about what we want to say or do ,are aware of how we feel ,think through a problem so that we understand it
Sensing and Intuition
The "Sensing" preference absorbs data in a literal, concrete fashion.

The "Intuitive" preference generates abstract possibilities from information that is gathered. We are Sensing when we: Taste food,notice a stoplight has changed ,memorize a speech
We are Intuitive when we: Come up with a new way of doing things ,think about future implications for a current action ,perceive underlying meaning in what people say or do
Thinking and Feeling
When someone makes a decision that is based on logic and reason, they are operating in Thinking mode.

When someone makes a decision that is based on their value system, or what they believe to be right, they are operating in Feeling mode.

Thinking mode: Research a product via consumer reports, and buy the best one to meet our needs ,do "The Right Thing", whether or not we like it ,choose not to buy a blue shirt which we like, because we have two blue shirts
Feeling mode : Decide to buy something because we like it ,refrain from telling someone something which we feel may upset them ,decide not to take a job because we don't like the work environment
Judging and Perceiving
We are using Judging when we: Make a list of things to do ,schedule things in advance ,form and express judgments ,bring closure to an issue so that we can move on
We are using Perceiving when we: Postpone decisions to see what other options are available, act spontaneously ,decide what to do as we do it, rather than forming a plan ahead of time

So when u have identify urself or the people u wish to know....u can work better, communicate better, can see how ur boss / bf or gf like.....Generally, there will be 16 patterns ( choose one from each category).

Good LUCK then....