During the past few weeks I have been doing a great deal of research on psychological profiling and tests (e.g. MBTI, Enneagram, Big 5 etc.). This research inevitably led to Socionics which has been a source of confusion to me, and as a result I have a number of questions as to the nature of Socionics and its relation to the MBTI.
1) What is the rough equivalent of Socionics types to MBTI types? My initial impression is that various types, such as INTJ in MBTI, are given names that are similar to other MBTI profiles, such as INTp in Socionics.
2) How respected is Socionics scientifically? I have gotten some very lukewarm reactions to Socionics here and other forums, but various peer-review papers I have read on it seem very enthusiastic.
3) Can anyone recommend any good papers/books on the subject of Socionics, profiling, or general psychology? Anything would be helpful, I'm relatively new to the field.
4) What is Socionics' basis for the physical descriptions?