The Four Temperaments as Circuit Modes
Choleric, Sanguine, Melancholic, and Phlegmatic as operational modes of the developmental circuit — not personality types but processing architectures.
The four temperaments are not personality categories — they are processing architectures. Choleric (Fire/Hot-Dry) processes through action and assertion. Sanguine (Air/Hot-Moist) processes through connection and communication. Melancholic (Earth/Cold-Dry) processes through analysis and structure. Phlegmatic (Water/Cold-Moist) processes through feeling and receptivity. Every individual has all four temperaments but in different proportions determined by the natal chart.
In AOS analysis, the temperamental balance is calculated from the elemental distribution of planets by sign and house. A chart with five planets in fire signs and two in earth produces a choleric-melancholic temperament: the individual processes primarily through action (choleric) with a secondary mode of structural analysis (melancholic). This temperamental profile directly influences how the individual will respond to correction protocols.
The temperamental balance also determines constitutional vulnerabilities. Excess choleric temperament produces heat-related conditions: inflammation, hypertension, burnout. Excess melancholic temperament produces cold-dry conditions: rigidity, depression, constipation. Excess sanguine temperament produces heat-moist conditions: scattered attention, anxiety, skin eruptions. Excess phlegmatic temperament produces cold-moist conditions: lethargy, fluid retention, emotional stagnation.
The AOS Health Analysis engine uses temperamental assessment as its primary diagnostic framework. Rather than treating symptoms, it identifies the temperamental imbalance that produces the symptom pattern, then recommends constitutional corrections that address the root architecture rather than the surface manifestation.