I came across this while hunting for something else. I found the numbers surprising since I thought VCI and PRI were very similar based on the GAI and all the discussion here. It actually looks like VCI is quite different and PRI and WMI are much closer in terms of impact. Does anyone know if these numbers have any validity? Any sources with evidence to suggest they are accurate?
I got them from
wisc history VCI accounts for 62% of variance in g
PRI accounts of 45% of variance in g
WMI accounts for 43% of variance in g
PSI accounts for 23% of variance in g
