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- in individuals with adequate speech, marked impairment in the ability to initiate or sustain a conversation with others
Yeah, this was me for years in childhood. Not so much now, or really my teens.
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- stereotyped and repetitive use of language or idiosyncratic language
I wonder what "stereotyped" and "idiosyncratic" mean. I assume repetitive is echolalia and palilalia.
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- lack of varied, spontaneous make-believe play or social imitative play appropriate to developmental level
I am not precisely sure what this means. Was it normal to line toys up or arrange them in scenes? I am pretty sure my play was imaginative, but I don't remember whether I did the more stereotypical "make believe" play with toys.
Also, was it normal to look at pictures in books and then imagine yourself in the scenes in the book? I spent a lot of time doing this, especially with Dr. Seuss and Richard Scarry before I moved on to novels. Strangely, although I read comic books (my parents gave me all kinds to read), I don't recall doing this with those.
Or reading books later (say, Alice in Wonderland, Through the Looking Glass) and imagine yourself in those? I was obsessed with chess for a few years because of this.
The DSM tends to be weirdly vague if you haven't actually taken the classes or read the books. The word "stereotyped" is overused in the PDD section, I think. They need a better, more specific, word.