A relative with known Dandy-Walker Syndrome has an unusual trait which I'm not sure if it's Dandy-Walker; I've just presumed it was, as it seems a little like the distinction between past, present,a nd future that can be a little blurry for those with DW.
Since childhood, this person has had difficulty telling fiction from reality. For instance, they will readily agree there is a difference, but yet they feel the same amount of empathy for fictional characters as real ones. If there is no sense of closure in a story, they feel they must create one. There is a great degree of suggestibility if something someone suggests is plausible, though they can usually rationalize about what is real and what isn't. They are quite literal, too.
The person has a higher than normal IQ - I suppose Asperger's Syndrome is possible, but there isn't the social itneraction problem. (Well, they're a little shy, butrather outgoing overall, especially after they know someone. So, that's normal, I think.)
Does anyone else know anything about the difficulty between fantasy and reality?