Dmitri Lytov and Marianna Lytova state that "main spheres of application of socionics are almost the same as for the Myers–Briggs Type Theory", and that observed differences in correlation "represent characteristic stereotypes of the socionics and the Keirsey typology. Others state that MBTI and socionics "correlate in roughly 30% of cases," and that "there are many subtle differences". J and P in Socionics and Myers–Briggs are completely different: in Myers–Briggs, J and P stands for the "first extraverted function" (J—extraverted thinking or feeling, P—extraverted sensing or intuition); in Socionics, J and P stands for the "first function" (J—rational (thinking and feeling), P—irrational (sensing and intuition)). This formal conversion is carried out in accordance with the .