1) Te is efficiency of an action, technical processes, the accomplishment of work, the efficient and prudent use of resources, factual accuracy, and the acquisition of relevant and useful information. Te understands the difference between effective and ineffective behavior when performing a procedure or accomplishing a task, and aspires to increase the frequency of productive outcomes within a system.
2) Fe is responsible for the perception of an emotional state in an individual and the bodily and linguistic expression of emotions. Fe is able to influence others' emotional condition and to communicate its own, "infecting" others. Fe is used especially in generating and recognizing excitement and enthusiasm.
3) Se is responsible for the perception, control, defense, and acquisition of space, territory, and control. It observes outward appearances, estimates whether forces are in alignment or conflict, and uses strength of will and power-based methods to achieve purposes. Se understands territory and physical aggression. It is also the function of contact and apprehension of qualia.
4) Ne is responsible for understanding the essence (permanent but not obvious traits) of a thing, estimating the potential and latent capabilities for people and things, and visualizing the likely outcome of events. It is responsible for the sense of interest or boredom. Ne will speculate as to why an event occurs, but sees the specific event as static and unalterable.
5) Ti is responsible for understanding logic and structure, categorizations, ordering and priorities, logical analysis and distinctions, logical explanations. Ti interprets information according to how it fits into a validating system. Ti is particularly aware of logical consistency and how concepts relate to each other in meaning and structure, independently of particular purposes.
6) Fi is responsible for understanding the quality, nature, and proper maintenance of personal relations; makes moral judgments; and aspires to humanism and kindness. Fi has a strong understanding of the social hierarchy and how people feel about each other, their attitudes of like or dislike, enthrallment or disgust, repulsion or attraction, enmity or friendship.
7) Si is responsible for perception of physical sensations; questions of comfort, coziness, and pleasure; and a sense of harmony and acclimation with one's environment (especially physical). Si understand how well a person or thing's behavior agrees with its nature as well as the differences between comfortable behaviors and positions and uncomfortable ones.
8) Ni is responsible for the estimation of the passage of time, the understanding of a course of processes in time, and forecasting. Ni understands how things may change and evolve over time and throughout history. Ni is acutely aware of events that are occurring outside of the immediate perception of the moment, and sees events as part of a continuous flow. Ni perceives the possible ramifications of future events and notices ties to the past. Ni observes behavioral patterns and can assess a person's character.