Theory about psychosis
I won't get into it too heavily, but there were times were I feel I may have had mild psychotic symptoms (which I've read can sometimes happen in aspergers).
I've done some research of my own into psychology, and lately am interested in Ken Wilber's writings - here are some of my thoughts on what may be the origin of psychosis:
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1. From what I've read about evolutionary psychology, there may be some innate mental associations with certain things in nature, such as sounds (e.x. the "r" sound in words like "fear" or "anger" may trigger negative emotions, and is associated with animals growling).
2. When a person is in a "threatened" state of mind, I believe they tend to enter 'fight or flight' mode and see everything as "black/white".
3. I believe the psychosis may essentially be linked to creating literal mental associations between things or objects which are very different, based on some minuscule similarity (e.x. a person might form a literal association between a random stranger and the devil if the person's face resembles the face of the devil from a TV show). I believe Ken Wilber referred to a concept known as "psychotic adualism"
4. The "word salad" likewise seems to be based on these type of literal associations, and possibly forming associations between the sounds of the words rather than the meaning.
One other relevant thing:
Apparently one of the basic human emotions "disgust" is associated both with "nasty" or "diseased" things (like germs) as well as things which are morally dangerous or evil.
So a person forming an extreme black/white mental association might experience the same emotion when smelling a bad odor as someone who's witnessed a murder; and if constantly "bombarded" these on a daily basis could therefore feel "paranoid".