Gregory Reinin after the founding of the International Institute of Socionics in Kiev, Ukraine.
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Aušra Augustinavičiūtė (April 4, 1927 – August 19, 2005) was a Lithuanian psychologist and sociologist, and dean of the Vilnius Pedagogical University's department of family science, author of numerous scientific theories and discoveries, and the founder of Socionics.
Beside Gulenko's, there are several other theories of correlation between temperaments and socionic types, although almost all socionic authors support Eysenck's view that temperaments do correlate with the E/I factor.
He is also credited with Alexander Bukalov and Gregory Reinin, as a chief player in the later developments and standardization of socionics theory after Aušra Augustinavičiūtė.