I research kids with Downs and have witnessed the savant abilities of some participants. It is particularly intersting that a significant number of the "savant" participants have a relative with a high IQ comparable to MENSA standards
That is interesting - but say 1:100 is within MENSA range. Then at least 1:5 people have a relative in MENSA range. I'm in MENSA range (around 140) but my older brother is well above entry MENSA level (160). Most of my family is fairly normal IQ.I also find my IQ varies considerably between 125-140 or so depending on my mood and attitude. I have not tested it in many years.Savant abilities are fascinating. But I feel that many people more clever people have these abilities that are not savant. Its just more unusual when a person considered as below average intelligence has outstanding ability.