This is a personality test of the four Ancient Greek temperaments.
In Ancient Greek medicine, illness was believed to be caused by an imbalance in four types of body fluids: blood, yellow bile, black bile, and phlegm. The temperaments idea grew out of this with the idea that a persons personality was characterized by one humor. The temperaments are sanguine, choleric, melancholic, and phlegmatic.
The theory has never been scientifically tested. Some find its descriptions useful however.
This test consists of 32 descriptors. For each you must indicate whether or not it applies to you, or if you can't decide.