I added some clarifications that I have learned this last year, to help you feel less muddled. I have read in
The Haunted Self (this is really a good book when you want to understand DID!) that there has to be more than one ANP in a system before it can be seen as tertiary dissociation.
Yes.
Just to make the terminology used in the book clear:
- Primary dissociation has one ANP and one EP. For example, simple PTSD.
- Secondary dissociation has multiple EPs and one ANP. IIRC complex PTSD is an example of secondary dissociation.
(the authors do add USUALLY to the having one ANP def)
Tertiary dissociation has multiple ANPs and multiple EPs. For example, DID.
The authors state that USUALLY those with DID have at least 2 ANP and ONLY DID is tertiary dissociation.
I don't really understand the difference between ANPs and EPs, but as it are just labels I'm not going to pay too much attention to the difference (especially as the distinction isn't always very clear in DID).
These parts are so much more than labels! You as the host should not understand, but the more you read about it, the more the other alters in your system will understand which part they are - and that is even difficult. In my case it is 2 observing parts (ISH and Observing EP) that work on this, after observing the alters inside for our whole life. You as host are ANP - so that is usually not hard to figure out, although a high functioning EP is thought to be able to act as host, but that is not very common and I doubt they do without the help of ANP's. A simple way of looking at this is those parts who WERE a host at sometime in your life are probably ANP. When it comes time to integrate, the ANP's can really help and support the EP's. It is good for them to understand their roles. The more educated the alters are the faster integration will be and the better your system will work together.
I have read a bit of this thread:
My understanding of SD has advanced quite a bit in the last year. Those are old threads. I would not refer to old stuff. Just looking at them confused me. Most of the time in a forum we are debating things back and forth and trying to make sense of them. No one, including me in those threads had read much on it then.
One definition of an EP I have read is that they are stuck in the trauma.
What if a part falls between those definitions?
In my case the abuse was so horrific at home that the ANP also suffered a lot of abuse. They add A LOT! So yes, ANP can hold trauma memories. Bad things can and do happen before a switch sometimes when abuse is really bad. Still the EP's have not usually been hosts. I don't know how a host could decide who is what part. Even my alters have trouble with this. It is the Observing parts (ISH's and Observing EP) that do this for our system. I have 2 that talk it back and forth and even then it is not always easy to tell. I don't imagine that any part of the system living in a very abusive home is free from trauma, but they are free enough that they can function as host and continue the job of life in the outer world - unlike an EP.
Just to make things easier to read, I'm going to assume those parts I seem to have are real. But I'm not sure they are real (I haven't had a diagnosis yet, but that's a whole different story and off-topic). I have at least one part that thinks she is dead (Siria) - so probably an EP stuck in trauma. And one part (Sandra) that seems to be more a kind of ANP, but, as far as I know, she has not yet come forward (fronted). But, when she is an ANP, would that automatically mean it's tertiary dissociation and thus DID? Or am I missing something?
In my case ALL the alters that were thought dead (63) of them were ANP. This took days of thought by my ISH to decided if they were EP or ANP. I was thinking EP, but I was ... dead

wrong.
Short story: One ANP who was host during my childhood - Great White Shark (imagine what kind of kid I was)

was hurt so bad by the school principal that GWS was shoved so far back into consciousness that he and the other alters thought he was dead. This occurred after I attacked my 3rd Grade Teacher Ms. Anderson. I still hate her. She looked like a plastic barbie doll and was mean to me. She would tell the other teachers that I was Schizophrenic and crazy. GWS, along with all the other alters that were through dead were found by my ISH during a reorganization process/integration. We refuse to leave anyone behind.
I am sure I was a sweet, lovable child and she was dead wrong! (where is an angel icon?)