I think they got in the single-digit thousands, perhaps 5-10,000, but I don’t really recall.
There must have been power estimates done internally, but if there was one ever made public explaining how much power they expected from enrichment, I didn’t hear about it. I won’t pretend I know the details of what they were thinking sufficient to do my own power analysis, but I didn’t think it was a terrible idea at the time; it was worth trying, and the results could always (I assumed) be meta-analyzed with later bigger results.
So how many 150+ IQ samples did the latest studies have access to?
More generally, what’s the equivalent general population sample size for the tail sampled high IQ populations?
Article about the Chinese Study and it’s linking up with the SMPY study
http://www.nature.com/news/chinese-project-probes-the-genetics-of-genius-1.12985
I think they got in the single-digit thousands, perhaps 5-10,000, but I don’t really recall.
There must have been power estimates done internally, but if there was one ever made public explaining how much power they expected from enrichment, I didn’t hear about it. I won’t pretend I know the details of what they were thinking sufficient to do my own power analysis, but I didn’t think it was a terrible idea at the time; it was worth trying, and the results could always (I assumed) be meta-analyzed with later bigger results.