Originally Posted by ultramarina
not all her associations are the same as they were when she first told me about it at age 6. I wrote them down at the time and about half seem to have changed, though the rest are exactly the same. I thought this was not supposed to happen?
That's extremely interesting! We've been speculating that there may be a much longer window of plasticity for this than everyone assumes. For one thing, it's often the written appearance of a letter or number that triggers the synaesthesia, so that's something that wouldn't happen (usually) until school age. I would love to do a study on whether we can induce new synaesthetic connections in adult synaesthetes.

Originally Posted by ultramarina
Oh, and has it been conclusively connected to intelligence and memory?
As far as I know there is no evidence to support this.