Element: Earth Qualities: Cold and dry Humor: Black bile

Personality: Thoughtful, introspective, detail-oriented, serious

Behavior: Prone to sadness, perfectionistic, loyal, needs solitude, deep thinker

Modern comparison: Introverted and analytical

Element: Water Qualities: Cold and moist Humor: Phlegm

Personality: Calm, kind, peaceful, reliable

Behavior: Avoids conflict, patient, compassionate, steady, sometimes passive

Modern comparison: Relaxed and agreeable

Element: Fire Qualities: Warm and dry Humor: Yellow bile

Personality: Ambitious, leader-like, passionate, easily angered

Behavior: Goal-oriented, confident, aggressive, impatient, not easily discouraged

Modern comparison: Assertive, dominant, sometimes aggressive

1. Energy Direction (E or I):

E = I gain energy from being active, social, or in groups.

I = I gain energy from being alone, quiet, or reflective.

2. Response Style (F or A):

F = I react quickly, outwardly, and emotionally.

A = I stay calm, take time, and keep emotions inside.