LogFAQs > #966949732

FighterStreet6 posted...

You have literally no idea what you are talking about. The primary function of IQ tests are to identify learning disabilities

It was constructed to predict educational achievement to identify students that would need additional help (i can't remember, there might have been an initial military interest that drove early research, but doesn't really matter for the core point).

This was done using a statistical method called factor analysis. More or less, it was found that you could reasonably predict global school performance using a single factor which all grades loaded onto, this was called the g-factor.

Then IQ tests were constructed to correlate with this g-factor.

IQ tests are heavily confounded by socioeconomic factors, and once those are accounted for, predicting later success becomes close nill.