Sociopaths are more likely to comparmentalize than anyone else. Did you follow the Dennis Radar case? He explained it very clearly when he talked about how he could claim be a family man, yet commit the atrocities that he did. He said he just kept those parts of his life separate. His family said he was a loving husband and father. To him, his life as BTK was like a man going to work, and when he was home, he acted differently. People do that all the time, a corrections officer can be stern, firm and even cruel at work, yet come home and be a loving parent. A sociopath finds that easier to do than anyone. Because they don't have a conscience, they find it easier to "forget" while they are engaged in other activities or other personna's.
But a person with PTSD can sometimes do that too. Most people live one life inside during stress, and another life outside. If you have ever had an ill child, you would know that you would attempt to present to the child that he/she will be ok- even while you are extremely worried about him/her. A person with PTSD also has to do that. They feel crazy, they feel depressed, they feel angry- but they also feel that if they let that out, they will be institutionalized. So they try to hide it by keeping that part of themselves hidden from the world. They try to not think about it, to hide it, to act "normal." To some extent they do compartmentalize it.
