In an old post, I discussed code-switching, a phenomenon in which bilinguals switch languages, often repeatedly within conversations with other bilinguals. My interest in this subject arises from growing up in a family of code-switchers. As a child it drove me a little crazy because I didn't understand why people would switch languages constantly, within the same conversation or even within a single sentence. Sometimes I would ask my mom why she did this, and not only couldn't she explain why she did it, she wasn't even aware of doing it.
At some point in my training as a psychologist, I took an interest in understanding the psychological/neurological bases for code-switching. Was it an accident of wiring? Did it serve some adaptive function? I wrote about my questions in 2011, and when I wrote about it, I also raised a question about bilinguals with Asperger's. Specifically, would a bilingual person with AS be less likely to code-switch? The reason I had that question is explained in the post.
I was wondering about my question again today, after I heard a couple of Mexican guys code-switching. So I googled. I came across a recent paper that indicates that people with AS can code-switch. It's based on case studies, so it doesn't answer my question about whether they code-switch less frequently, but they aren't incapable. More interesting is the finding that the cognitive effort involved might improve certain AS-related cognitive limitations in bilinguals with autism. While I was reading the paper, I thought that there was a part that sounded bizarrely similar to what I had written (I was thinking plagiarism), but then checking the references, I discovered that the author referenced my post.