In socionics, Jung's cognitive functions are always either introverted (focused on refining quality) or extroverted (focused on increasing quantity), and are referred to as information metabolism elements (IM Elements) [REF].
The 8 socionics symbols ( ) were introduced by Augustinavičiūtė while working with Jung's typology[REF] and remain the dominant method of denoting the functions and the corresponding information aspects that they process.