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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]No there aren’t 200 kids per grade in FCPS that have IQs > 175.[/quote]

Wow that would be the highest recorded IQ[/quote]

The thing is many tests saturate at the highest scores.  #s are probably meaningless above about 150.  if you use 99.9 as the basis, and use a scale with a 15 point standard deviation, by definition, you are just over three standard deviations above the mean.  Or, just over 145.

175 is 5 standard deviations, or  330,000,000/ 1744278= 190 people in the US.  But, you can't measure it as the tests can't scale that high.

[b]Instead, you can look at lifetime results and the problems they can solve.[/b]

Really, anything about 140 is hard to measure.  One question can mean 10 points; one extra second in a section can impact it.

The difference between scoring 160 and 140 can a distracting itch.    (the key thing is scoring/measuring).

Years ago (around 1990), I was part of a study that looked at intelligence compared with different actions.  My baseline is about 155.  No sleep and it dropped to 130.  Drunk and it dropped to 110...etc.  
[/quote]

Stanford-Binet used to have a test that was designed to discriminate among the highly gifted (I was given it as a child in the early 1970s). But, as testing became a bigger industry, that component got dropped and it’s really outdated now (in a host of ways), though I think a few psychs still champion its use (or maybe just its utility). [/quote]

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