Of course, Jung didn't invent Model A. He didn't really differentiate the 8 functions as sytematically as Aushra. But from Jung's texts, we can find clues for various Model A functions.
The most obivious one is the Leading function and the Suggestive function, which is illustrated as the Anima in Jung's text. Although Anima is described as an archetype, I don't generally agree that the functions are fully corresponding to archetypes. Jung's definition of archetypes is related to the introverted attitude and the collective unconscious. Of course, the suggestive function has some relation to it since it deals with duality and hence Jung described its relationship with love. I think it's also fair to claim that the Model is an evolved part of human's psyche so they are related to the collective uncounscious. But I don't generally agree to assign archetypes to all functions. Archetypes are Jung's researches on the collective uncounscious and it contains many other things there.
Jung also hinted the existences of the Creative and the Activating. For creative, Jung hinted the possibility of an aux function. For activating, Jung said that his Anima contains mostly F and some S.
Now I'm discussing two lesser noticed functions. The Role and the Demonstrative. They are subdued functions. But Jung actually also mentioned them. What Jung described is pretty similar to what Socionics finds.
the Role function
Jung mentioned it in the 8th volumn of The Collected Works of C.G. Jung. When discussing the progressing of libido, Jung gave an example which resembles the Role functions:
From the Socionics' perspective, this is how a Fi-leading person plays the Ti-role. The person in the example is mainly oriented toward emphathy but when finding tasks that has to be solved via thinking, (s)he has to use the Role function. The means of "conscious" here is doubtful but anyway in Model A, Role is a mental function.Originally Posted by Jung
the Demonstrative (Background) function
Jung discussed the Demonstrative function in his Memories. When the Red Book is edited, these materials are cited to describe the background of the Red Book.
In Jung's Memories he claimed that he has a No.1 personality and a No.2 personality. Although he said that they are two contradictory parts of his ego, how he illustrate his No.2 personality reminds me of the Demonstrative function in Socionics.
Originally Posted by JungSo according to Jung, No.1 and No.2 are contradictory. Although Jung attributes both of them to the ego, I think it doesn't mean the No.2 is the Creative function since Jung didn't divide the Model into ego, super-ego, super-id and id. I personally understand Jung's Ego as the opposite to Self, which contains the collective conscious. When reading how Jung described his No.2 personality, it reminds me of the Demonstrative.Originally Posted by Jung
Originally Posted by JungBoth quotes suggest that No.2 is a subdued function, it might lead to depression and Jung tried to extinguish it. Doesn't it sounds like id? "I can" but I don't want, I want to extinguish it.Originally Posted by Jung
Jung claimed that the No.2 personality has something deep in the background. It has the feeling of something other than himself. Again this shows that No.2 is subdued, its value contradicts the value of No.1. However, it's running in the background and it feels like something that has been died but the spirit is perpetual. So it's not a mental function, it's a vital subdued function running in the background of our program. If it's a mental function it is supposed to be more vivid instead of being something like "dead but spiritly perpetual".Originally Posted by Jung
This is how Socionics discovers the Demonstrative function. In some schools such as the Socionics Research Institute, the Demonstrative function is also called the Background function. It is called Demonstrative because it's the id function that running in the background and hence show up uncounsciously and demonstratively. For instance, LIIs often have a defocused look and in Model A it's attributed to the background running of our Ni-Demonstrative.
This is how Socionics Research Institute describes the Background function:
Originally Posted by Victor ProkofievDemonstrative function is not easy for the TIM carrier to notice, it's a vital function, but it runs as a background program so it's visible and demonstrative to the others. Of course, Jung is aware of his Demonstrative, but even he made a lot of effort to connect his subconscious, he feels it vaguely and he finds it not very clearly defined.Originally Posted by Yu. In. Isaev
Jung linked his No.2 with the "old man". He said that his graphical intuition is beyond his powers and they all occured in his No.2. I think that many typed Jung as Ni-leading due to his graphical dreams. Jung actually clearly attributed them to his No.2, which is probably the Demonstrative function.Originally Posted by Jung
Originally Posted by JungOriginally Posted by JungOriginally Posted by JungJung once struggled to decide whether to study seince or to study humanity. Finally Jung realized that No.1 is light while No.2 is a shadow. He realized that he was defined by No.1 while No.2 is an autonomous personality. Again, this shows two points: No.2 is subdued/unvalued, and No.2 is something running is the backgroud demonstratively.Originally Posted by Jung
Finally, Jung linked his No.2 to the Zarathustra in Nietzsche's Thus Spake Zarathustra. Although I'm not familiar with Nietzsche's Zarathustra, I think there's various clue in Jung's memories that his No.2 is probably Ni.Originally Posted by Jung
Originally Posted by JungJung also identified several demonstrations of his mother's No.2.Originally Posted by Jung
Conlucison: Although Jung's descriptions on the No.2 personality is somewhat vague. But I think there's enough clue to link it with the Demonstrative function in Model A. There are several clues:
Clue 1: From Jung's descriptions of his No.2 personality, it seems to be subdued (something other than himself, lead to depression, shadow, contradictory, realized to follow No.1 instead) and vital (background, not clearly defined, like something dead etc.). Jung claimed that No.2 is something automnous and runs in the background. Such descriptions are similar to the Demonstrative.
Clue 2: Jung typed him self as an introverted thinker with intuition to be the second. So Jung's self-typing is LII and LII has Ni as the Demonstrative.
Clue 3: Jung claimed that his interests in humane and histroical studies attrubutes more to No.2, his graphical intuitions are beyond his power and in the No.2, he links his No.2 with Nietzsche's Zarathustra. All that hints that his No.2 might be Ni-related.
So the 3 clues are consistent. It shows that the No.2 described by Jung is probably the Demonstrative function, Jung is an LII and has Ni as his Demonstrative. Considering that his writing without the Ni-themed materials are quite LII-ish, I think these clues are quite evidential. So I think that his descriptions on the No.2 personality corresponds to Model A's Demonstrative function.
I think it's also valid to understand his No.2 personality as the combination of the 4 subdued functions. So he is actually talking about the subdued functions here. But it turns out that his discussions are mostly related to the Demonstrative and for himself, his discussions here are mostly related to Ni. He discussed the ingoring function in another way.