Originally Posted by Hedons

It's not quite that simple what the "I" means.

The terms extravert and introvert are used in a special sense when discussing the Myers-Briggs Type Indicator.

Attitudes: Extraversion (E) / Introversion (I)

The preferences for extraversion (thus spelled in Myers-Briggs jargon) and introversion are sometimes referred to as attitudes. Briggs and Myers recognized that each of the functions can show in the external world of behavior, action, people and things (extraverted attitude) or the internal world of ideas and reflection (introverted attitude). The Myers-Briggs Type Indicator sorts for an overall preference for one or the other of these.

People who prefer extraversion draw energy from action: they tend to act, then reflect, then act further. If they are inactive, their level of energy and motivation tends to decline. Conversely, those whose prefer introversion become less energized as they act: they prefer to reflect, then act, then reflect again. People who prefer introversion need time out to reflect in order to rebuild energy. The introvert's flow is directed inward toward concepts and ideas and the extravert's is directed outward towards people and objects. There are several contrasting characteristics between extraverts and introverts: extraverts desire breadth and are action-oriented, while introverts seek depth and are thought-oriented.

Myers-Briggs Type Indicator - Wikipedia, the free encyclopedia

-Hedons