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Similarly, those characterized by higher conscientiousness, openness, and agreeableness, as well as lower neuroticism and extraversion, were also more likely to adopt healthier behaviors.

For example, female Facebook users were rated as more extraverted than male users, in line with general findings that women score higher on extraversion.

Even simpler algorithms could correlate certain vocations—a hairstylist, say—with extraversion.

Questions gauged the “openness, conscientiousness, extraversion, agreeableness and emotional stability” of the respondents, said the research, published in the journal Frontiers in Psychology,

The most widely used model to determine personality is the Five Factor Model, which determines one’s tendency toward extraversion, openness, neuroticism, conscientiousness and agreeableness.