The balance between introversion and extroversion in hypochondriacal temperament is geared more towards introversion. Openness includes traits such as tolerance for ambiguity, extroversion and introversion, and open-mindedness. He proposed three dimensions of personality&colon; introversion/extroversion, neuroticism, and psychoticism. Neuroticism, Openness to Experience, and Extroversion. Introversion has been correlated to high brain-blood levels; extroversion to lower levels. Neuroticism or emotional instability and extroversion are two factors of the Big Five Personality Index. Information suggesting introversion was considered negative while information suggestion extroversion was considered to be positive. They later had to recall examples of her introversion and extroversion. Extraversion (also spelled as "extroversion") is the state of primarily obtaining gratification from outside oneself. In particular, extroversion and neuroticism have been linked to loneliness. It has positive effects on subjective happiness, optimism, wisdom, curiosity, agreeableness, and extroversion. Character, composure, extroversion and sociability are the dimensions of credibility that help establish referent power. Relationality has also been associated with extroversion and agreeableness. Extroversion captures similar aspects of assertiveness, dominance, and self-importance as narcissism. On the contrary, PPI-FD's best relationships were with positive personality traits, such as extroversion.