While he would be more or less an anecdotal evidence, (although the test included only 11 CAH subjects, so not that anecdotal) Jonathan had extremely high testosterone levels when he was born. Since he was our first with CAH, the gestation went completely untreated for any hormone imbalances. Jonathan is 8 years old and is whizzing through the second grade curriculum we currently have him on. We plan on spending the summer on various prep curricula, then starting him on fourth grade material in the fall. In math he is doing multiplication up to 850 x 850 (He could do more, but he’s at a motivational plateau. Since his younger brother, age 6, just started multiplication, the fear of being passed should motivate him, in short time). The only learning problem I’ve noticed in Jonathan is that his younger brother seems to be physically (spatial perception, motor skills, etc.) slightly more advanced then he is, but then again, Benjamin (the 6 year old) seems to excell in that area.

Ginny, while treated in utero, is still somewhat virilized, so obviously there was some androgen exposure. She’s only four, but seems to be just as far along as her brothers (CAH and non-CAH) at that age. I’ve just moved a computer into her room and she’s got a good grasp (no pun intended) of using the mouse to get around the desktop. She can get in and out of the few programs I’ve set up for her, and is spending quite a bit of time each day playing them.

From other comments by other parents (taking into account how biased we obviously would be) it would seem that the vast majority of parents observe increased intelligence in their CAH children, rather than decreased.