Perception
This is the process involved in becoming aware of something, ie how we take information in, process and access it. Jung called this an irrational process since the awareness simply comes to us. He further identified two kinds of perception: Sensation and Intuition. Sensing is a taking in information in a tangible, concrete way, focusing, according to Jung,
"...on the perception of actualities...These are the fact-minded men, in whom intellectual judgement, feeling, and intuition are driven into the background by the paramount importance of actual facts."
Intuiting is a process of taking in information in concepts and visually, around future possibilities and where, according to Jung,
"...actual reality counts only in so far as it seems to harbour possibilities which then become the supreme motivating force, regardless of the way things actually are in the present."
Sensing and intuiting can both be undertaken in either the outer, extraverted world or in the inner, introverted world.