the myersian functions and the socionic functions are not the same. I have done research and I have found these correlations :
(socionic = myersian)

= Se and Si

= Ne and Ni

= Te and Ti

= Fe and Fi

= no myersian equivalent
this is because :
- myersian functions are functions-attitudes, functions are really 4, not 8 and attitudes are 2 ; 4 * 2 = 8
for example, Se and Si are THE SAME function, but with a different attitude.
- socionic "functions" are information elements, which there are really 8
remember : these are only correlations...