Introverted Feeling (Fi)

Fi channels energy inward to evaluate phenomena according to an internally consistent framework of value. Its operation involves integrating observations and experiences into a coherent subjective system, producing judgments that are internally logical and precise. Fi functions independently of external validation, but continuously monitors consistency and alignment within the internal schema.

Second Function: Same modality, variable energetic toll

Extraverted Sensation (Se)

Se directs energy outward to perceive and respond to the immediate environment. Its operation involves capturing sensory input in real time, detecting changes, and executing actions informed by external stimuli. Se functions focus on precise perception and responsiveness to external conditions without interpretation through internal conceptual frameworks.

Third Function: Opposite modality, variable energetic toll

Introverted Intuition (Ni)

Ni channels energy inward to integrate information into cohesive, abstract models of systemic dynamics. Its process emphasizes detecting underlying structures, long-term trajectories, and causal relationships. Ni synthesizes discrete observations into coherent internal frameworks, prioritizing insight into patterns and latent trends over immediate, concrete data.

Fourth Function: The polar function, least natural to utilize, most energetic toll