[Oz-gifted] tests in the public system

[Keith McGuinness]

sol1 wrote:
> Reliability in psychological tests refers to consistency or stability in 
> measurement, not prediction of adult IQ or anything to do with ceilings.

Yes but we don't know what sense the term "reliability" was being 
used in, in this particular case. It may well NOT be the sense 
you are referring to. (EG precision and accuracy are used 
interchangeably in casual conversation but, in statistics, they 
mean two quite different things.)

Studies show that measurements of IQ at, say, age 8 are usually 
better correlated with adult IQ than measurements at, say, age 5. 
(If I am remembering correctly; I don't have my psych tests book 
with me.)

This is the main reason, as far as I know, why results on older 
children are regarded as more "reliable" indicators of potential.

Keith McGuinness