Excellent question. It might work on things like Aspergers, highly functional Autism and OCD, which are typically misfiring or incorrectly established sypnaptic connections, but that’s not something that happens overnight. I also doubt it is something that is explicitly addressed by the subliminal, so it would be more of a side-effect.
The emotional aspect will remain difficult though, as for people with Aspergers emotion is more like a skill set than an intuitive process. They respond with a smile or with a “Love you too” because they have learned that is the appropriate response, it’s what people expect. With a lot of practice (social contact and observation) it can become second nature, but it will always essentially remain a skill. Like driving a car, there’s a point where you stop thinking about how to do something and it just happens automatically.
But… QL is very good at having you learn skills, isn’t it?