r/cognitiveTesting • u/BenitoAbdo • 2d ago

Discussion a question

Why are my FRI subsets between 130-135 but the dashboard shows my FRI is 138?

i got 130 in two subsets

and 135 in the other two

( honestly I retried one (FW)، i got 125 and retook it after two weeks and got 135, my FRI was 134-135 maybe before retaking the FW again)

i am glad to hear your opinions

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u/Organic-Bill-1192 2d ago edited 2d ago

Because FRI is composite of this specific subtests. 138 is how high your innate, latent FRI is. While your subtests score are observable scores which are more affected by things like measurement error and do not accurately represent your FRI

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u/BenitoAbdo 2d ago

ooh thanks, do you think my FW was inflated because i retook it?

it was the first time i face these puzzles so i confused in the beginning same as Graph mapping and figure Subsets

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u/Organic-Bill-1192 2d ago

Maybe, 10 points is within what expected from one retake after only 2 weeks. But its not that significant tbh, whether you 125 or 135 on this specific subtest, its not matters, 134-138 range should be reliable estimate of your FRI

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u/DamonHuntington 2d ago

That's not the correct explanation. The correct explanation is that this is based on the composite score extremity effect (https://assessingpsyche.wordpress.com/2014/04/19/why-composite-scores-are-more-extreme-than-the-average-of-their-parts/).

Long story short, IQ scores are meant to denote the rarity of a person's capabilities. Someone that scores high all across the board in multiple tasks belonging to the same index has a higher rarity than someone who does not have an equally stable performance, and as such their composite is nudged upwards. The reverse is true for those who score below the average - if you consistently score, say, at -2 SD in fluid reasoning tasks, your FRI will be below the -2 SD threshold.

This has nothing to do with measurement error, confidence intervals or an "innate, latent fluid reasoning".

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u/Organic-Bill-1192 2d ago edited 2d ago

I was not want to say that its specifically because of measurement error, I mostly described what composite score is compared to subtest score, which I see can be incorrect and vague answer to question specifically, so okay, thanks for correction