[sci.psychology] I need references for cases of math ability in mentally deficient

jdubb@bucsf.bu.edu (jay dubb) (04/27/91)

   I am posting this for a friend of mine who doesn't have access
to USENET, so please respond directly to mlevin@jade.tufts.edu.

   I am looking for pointers to (references, or stories about) cases
of mentally deficient people (or, people who have had no mathematical
training whatsoever) performing various mathematical feats. I am not
interested in performers, who learn tricks etc. to do amazing
multiplications - I am looking for things like the following
(described in Oliver Sacks' book "The Man who Mistook his Wife for a
Hat"): there is a set of autistic twins, without any schooling, who
sit around quoting huge prime numbers at each other.  I find this
fascinating, and would like some references (preferably to scientific
journals, rather than to popular ones, but anything will do) to other
cases of this. Does anyone have any opinions/ideas about this
phenomenon?

Mike Levin (mlevin@jade.tufts.edu)