How about torsion dystonia? Increased IQ can be observed before the onset of the disease, even when matched to comparable members of the same population.
One, Torsion Dystonia could just as easily be effecting something else which effects IQ.
Two, the studies on Torsion Dystonia decided to only study people who were not showing symptoms. This means they were selecting around heredity, since those who show symptoms and those who don't were not divided on gene expression -- there is only one allele in play as far as we know.
Three, the study was 14 persons. Removing a single person from the sample could have swung the data to say the opposite.
One, Torsion Dystonia could just as easily be effecting something else which effects IQ.
Two, the studies on Torsion Dystonia decided to only study people who were not showing symptoms. This means they were selecting around heredity, since those who show symptoms and those who don't were not divided on gene expression -- there is only one allele in play as far as we know.
Three, the study was 14 persons. Removing a single person from the sample could have swung the data to say the opposite.