interesting, well my DS5 DYS was highly academically inclined very early...so that was very clear to us because he was all about reading, letters, numbers, questioning, etc. So Ruffs LOG worked well for him and easily always put him at a 5. But with DD2, she is quite different. Not really into all that stuff at all. She does like books and will sit through fairly long books now. I recently found out that she knows all her letters, and she counts really high, etc...but I just didn't realize all this because she just isn't into it like he was. She is more creative, quite imaginitive, etc. I do think she is a gifted child, different than DS, but clearly gifted. It just doesn't show itself in the same way. so I guess you never can tell.