> But the performance doesn’t correlate as well at higher levels, though, unaware of the effect of the nonlinearity, the psychologists will think it does.
Dunno what the author is trying to say. Most psychologists into IQ should know it is a normal distributed scale. And a correlation of 1 with any empiric data with IQ is just hyperbole. Who says there is any perfect correlation with something and IQ in the lowest range.
Dunno what the author is trying to say. Most psychologists into IQ should know it is a normal distributed scale. And a correlation of 1 with any empiric data with IQ is just hyperbole. Who says there is any perfect correlation with something and IQ in the lowest range.