I'm a partner in  http://www.therosettafoundation.org/does-vigoril-work.pdf weakness does vigoril work magazines  But there's much more to it than this classic definition. Introverts and extroverts also think differently. Extroverts tend to be quick-thinking multitaskers who lean toward impulsiveness and quick gratification; introverts like to process slowly and deeply before they speak or act, and are comfortable with delayed gratification. Introverts tend to function best in quiet autonomous environments, while extroverts do well in noisier, more stimulating situations.