Four elements (earth, air, fire and water) combine into complexion, which combines into states (the four temperaments: sanguine, phlegmatic, choleric, and melancholic).
en.wikipedia.org Put in terms of the 5 factor level of personality, choleric people are high in neuroticism and high in extraversion.
en.wikipedia.org It was traditionally held to be hot and excessively dry and ruled the choleric humor.
en.wikipedia.org The melancholy and choleric, however, shared a sustained response, and the sanguine and phlegmatic shared a short-lived response.
en.wikipedia.org Therefore, it was evident that the sanguine and choleric shared a common trait: quickness of response, while the melancholy and phlegmatic shared the opposite, a longer response.
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