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Questions tagged [iq]

For questions about intelligence quotient (IQ) scores, methods of assessment of IQ, and correlates of IQ.

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How would somebody with an IQ of 1000 behave? [closed]

I know the best that can be done here is speculation, but how would someone with an IQ of 1000, or even 1000000, behave? I've seen that movies have a tendency to depict superintelligent beings as ...
Flamethrower's user avatar
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20 views

IQ tests versus Psychological evaluation [duplicate]

If you have been under psychological evaluation by a psychiatrist who says you have high intelligence, but your IQ test has you at 105, is the test the problem? The doctor is evaluating creative ...
Rachael's user avatar
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Is it true that cursive "stimulate" brain better than other types of handwriting?

Is it true that cursive "stimulate" brain better than other types of handwriting? I find lots of links about this topic, but has it been scientifically proven?
22flower's user avatar
2 votes
1 answer
148 views

What is the average IQ in Bangladesh or of Bangladeshis?

In July 2010, Richard Lynn wrote the following in their article "National IQs calculated and validated for 108 nations": "For example, there was no measured IQ for Pakistan, but there ...
Sakib Arifin's user avatar
2 votes
0 answers
42 views

How are answers on verbal IQ subtests evaluated?

I spoke to a clinical psychologist recently about how verbal subtests on IQ tests are evaluated. She said that answers regarding the meaning of a word were evaluated based on whether or not they were ...
user110391's user avatar
1 vote
1 answer
1k views

Do people with ADHD typically underperform on IQ tests? [duplicate]

To me, there seems to be a great disagreement about what IQ is supposed to measure. I have heard about psychologists taking ADHD/depression/other mental illnesses into account when deciding on the ...
user110391's user avatar
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0 answers
33 views

How do I increase my processing speed? [duplicate]

I have an IQ of around 90 (with 88 of that as reasoning IQ and 92 as performance IQ). I’m extremely worried about getting a job and doing well. Are there any exercises, medication, lifestyle changes ...
user32720's user avatar
2 votes
1 answer
115 views

Which of IQ or personality traits best predict job performance?

IQ seems to be an important predictor of job performance (close to 0.6 correlation coefficient), see here. It is said that: "Evidence from more than 100 y of research indicates that ...
Starckman's user avatar
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-1 votes
1 answer
2k views

Messy or fast handwriting related to high IQ?

Is any study that proof people with messy or fast handwriting have high IQ?
22flower's user avatar
6 votes
2 answers
727 views

Is anything known about pygmy intelligence?

I read that pygmies split from other human lineages pretty long ago, before modern humans appeared. That, and the fact that they still remain hunter-gatherers, makes me suspect that they might still ...
Wolphram jonny's user avatar
3 votes
0 answers
261 views

What is the correlation between scores on Verbal and Culture Fair tests for Cattell III Scales?

Adults looking to join Mensa in Britain via sitting an entrance test offered by the organization, are able to sit two separately scored IQ test papers: Cattell III A , mean = 100 , SD = 16 Cattell ...
Ross T's user avatar
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1 answer
21k views

How reliable is this self-administered Mensa IQ test?

I found a Mensa challenge test, which can be taken for free on the Mensa website and involves answering 35 problems within 25 mins. They do mention that it is only for entertainment purposes, but ...
anya's user avatar
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How was the infant IQ test applied to Koko?

Apparently, a Gorilla named Koko took a number of IQ tests and scored an average of 80, their full range of scores being 70 to 95. The test used was the Cattell Infant Intelligence Scale. I don't ...
A. Kvåle's user avatar
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3 votes
0 answers
96 views

Do different ethnic groups have the same standard deviation of the IQ distribution?

There is a lot of research suggesting that different ethnic groups either within US or worldwide if all plotted together would have distributions of IQ with different averages. The reasons for that ...
chugeth's user avatar
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1 answer
1k views

How applicable is the correlation between high IQ and academic achievement in guessing a child's IQ?

IQ is a highly reliable (reliable in the statistical sense) psychometric, ie. several IQ authorised IQ tests administered by a licensed psychologist should produce similar/identical results. This does ...
Bithov Vinu 's user avatar
1 vote
0 answers
870 views

How is the mean for the Cattell IQ tests calculated?

British Mensa uses Cattell Culture Fair and Cattell III B tests. The Cattell Culture Fair Test has a mean and SD of 100 and 16 respectively. The Cattell III B has a mean and SD of 100 and 24 ...
AnonyMouse's user avatar
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111 views

A primitive model or way of describing the "functionality" of intelligence

I spent quite a bit of time philosophizing about what intelligence actually (as in function-wise is) and I came to the conclusion that it consists of two (or so) properties Number of operations per ...
blazg_7S's user avatar
5 votes
2 answers
3k views

Are IQ scores above 200 statistically meaningful?

IQ scores are supposedly put on a normal distribution with a standard deviation of 15. The population of the world is about 7,674,000,000. So, if I know my statistics and made no numerical errors, the ...
onigame's user avatar
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2 votes
2 answers
317 views

Any ways to guesstimate IQ?

Is there any way to roughly approximate someone’s IQ simply based off of observing their behavior, mannerisms, speech, social interactions, etc? In other words, are their certain patterns of behavior ...
Joa's user avatar
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0 answers
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What is the Reason Behind This Individuals Variability in Raven's 2 Clinical Edition Scores? [duplicate]

The Raven's 2 Clinical Edition developed by Pearson features an item bank comprised of questions numbering in the hundreds. Because of this each test differs from the other with possible combinations ...
amsdecember's user avatar
0 votes
2 answers
718 views

Is there scientific evidence that IQ tests measure intelligence? [duplicate]

IQ tests are quite popular, but they seem to be lacking a scientific proof confirming their accuracy of measuring ones intelligence. No matter how hard I've searched I haven't been able to find a ...
user avatar
2 votes
1 answer
421 views

If you can't draw, is that an indication of low spatial IQ?

People who can draw obviously can visualize space and objects in their mind. Therefore, people who can't draw obviously cannot. So does that mean that people who can't draw must have low spatial IQ?
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In non-human animals, does general intelligence apply?

In humans, there is this concept of general intelligence, which says that if someone is smarter than you then they are smarter than you at all activities that rely on intelligences. Do other animals ...
user avatar
4 votes
2 answers
3k views

How are IQ test scores affected by psychological stress or trauma?

Does mental stress or trauma have a significant impact on IQ test performance relative to baseline, and if so, how much? For example, if a person is affected by abuse, bullying, neglect, or some other ...
user2638180's user avatar
1 vote
1 answer
604 views

How have mean raw IQ scores changed over time (e.g., over the last 100 years)?

I understand that by definition, the mean IQ is 100. And that over time IQ tests are updated to ensure that mean remains 100. But if IQ scores were not updated, what would mean IQ be now and how has ...
porton's user avatar
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2 votes
1 answer
76 views

Is a cognitive test invalid if self-administered?

Im talking about tests not designed for self-administration like the moca,wais etc. Could the scored potentially be deflated or inflated and misadministered thus making them invalid?
stackcogni1001's user avatar
1 vote
0 answers
165 views

What is the correlation between posting GIFs in group chats and IQ

recently several major Telegram channels I am member of have been heavily ostracizing people posting gifs in such channels, and claiming that it's a sign of retardation. I would not want to jump to ...
62mkv's user avatar
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3 votes
2 answers
291 views

Why are most psychological studies not controlling for IQ and personality scores of their respondents?

Consider for exemple the stereotype threat, of which a recent meta-analysis can be found here. People try to assess how can a stereotype might explain a difference between two groups. However, they ...
outofthegreen's user avatar
1 vote
0 answers
371 views

Is practice effect on matrix-based IQ tests largely attributable to question feedback?

I took the TRI-52, which is strongly correlated with other cognitive ability tests. When I first took it, I was tired, my mind was foggy, and my ADD was acting up -- I got a score of 116. The ...
omeed's user avatar
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1 vote
1 answer
123 views

IQ-EQ oscillation

I know a guy who was very smart in school and university and had a high IQ. For example, in middle school he used to read high school science and math books like they're nothing but he had low EQ and ...
user5402's user avatar
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0 votes
1 answer
434 views

IQ Heritability: from father vs mother?

I think on Wiki here it is suggested that IQ is inherited to some degree. But I can't find scientific information on whether it is more inherited from mother or father? e.g. if both mother and father ...
nicolas's user avatar
1 vote
0 answers
37 views

How is the weight of Weschler subscales calculated towards general IQ?

How do the Wechsler IQ (e.g. WAIS III) tests indices (e.g. verbal IQ, performance IQ) and sub-scales contribute to overall IQ? What are the weights of each? If a person scores above 99.9th (maximum) ...
Eggman's user avatar
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2 votes
0 answers
107 views

Is your fluid intelligence malleable in the positive side?

I was going through this and it struck me that your raw IQ reaches its peak somewhere between 18 and 21. I came across the following article which says meditation could be very helpful to boost your ...
rickkcir's user avatar
3 votes
0 answers
114 views

Any conclusive statement on the controversial book The Bell Curve

The Bell Curve: Intelligence and Class Structure in American Life, an empirical study arguing for IQ correlations with success, genes and race apparently sparked a big controversy in the US since 1992 ...
infatuated's user avatar
1 vote
0 answers
67 views

Is Flynn adjustment for IQ scores viable?

I was IQ tested with a test battery that was normed 27 years ago when i was 8 (WISC-R)(It was normed 27 years ago when I was 8). My Verbal IQ score was 122 and my Performance IQ score was 130. I found ...
kobistokas's user avatar
3 votes
1 answer
443 views

Validity of Open Online IQ test

I want to measure IQ of college students for a research project I am working on. After searching for valid IQ test for research that is also low cost/free, I came across this site-https://...
Sourabh Rai's user avatar
1 vote
1 answer
292 views

Why does IQ have a truncated normal distribution?

I know that the IQ statistic is designed to give it a mean of 100 and that you'll certainly never find someone with an IQ below 1 or above 300, but that tells us very little about the variance or ...
J. Mini's user avatar
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0 votes
0 answers
91 views

Is there a consensus that there are racial differences in IQ scores? [duplicate]

I'm not asking whether the difference is genetic or environmental, or if IQ scores are a racist and flawed measure of intelligence. i.e., I am not asking about causation. Is there a consensus that ...
user avatar
1 vote
0 answers
21 views

Is AFQT geared towards estimating crystallized intelligence?

In a few papers I have read claims that AFQT is geared largely (mostly?) towards measuring crystallized intelligence. However, https://study.com/academy/popular/difference-between-the-asvab-afqt....
LetMeSOThat4U's user avatar
3 votes
0 answers
2k views

Is there a scientific consensus on the cause of IQ gap by race? [duplicate]

On average, there is a 15 IQ points gap between whites and blacks. Is there a scientific consensus on whether this gap is explained by nature/genetics, nurture/environment, or both? This NYT article ...
mhmhsh's user avatar
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2 votes
0 answers
75 views

Can some one operate 15 points lower during some part of the day and then return to normal?

Few days back I took an IQ test (online mensa norway) and found my IQ score to be 85. I actually had my IQ professionally tested 16 months ago by a psychologist when I was 18, and found out that I am ...
Sussan's user avatar
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3 votes
1 answer
66 views

Correlation used as explanatory device in ''The neuroscience of Intelligence'

I am currently reading Dr. Richard Haier's book The Neuroscience of Intelligence. I have a base knowledge of statistics, but I am confused about the following extract from page 80 (chapter 2.4): ...
toljoas's user avatar
  • 33
-2 votes
1 answer
80 views

How is it possible for fluid iq to be anything besides effort

On an untimed test where you are given directions on how to solve progressive matrices there is no reason to fail the question besides the test being wrong or not following directions. How was iq ever ...
user24241's user avatar
0 votes
1 answer
535 views

if IQ is inherited, is it from father or mother?

I think there is some research that IQ is inherited, but is it inherited more from the father, or mother, or both?
george's user avatar
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1 vote
0 answers
112 views

Scoring of the Wechsler Nonverbal Scale of Ability

How is the global test score supposed to be computed based on the individual scores in the Wechsler Nonverbal Scale of Ability? Let's say the sub-test scores are A, B, C, and D. From there: how do ...
user23517's user avatar
3 votes
0 answers
69 views

What research is there into content of conversations vs IQ?

I wonder if there is any research into the content of a conversation between two people and how that relates to IQ. My casual conversations are that people of, lets say a more humble background, which ...
zooby's user avatar
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3 votes
1 answer
883 views

Any research on IQ (general) and coping with abstract concepts?

Is there any good research on how general IQ correlates with levels of abstractions people can easily handle? I understand, that abstractions are different, but here it's probably enough to cover ...
Roman Susi's user avatar
6 votes
1 answer
639 views

How can IQ below 40 be measured?

Common intelligence tests such as the WAIS or RIAS don't differentiate well (or at all) in very low IQ ranges, making it impossible to diagnose the degree of mental retardation according to the ...
Randolph Eggerton's user avatar
4 votes
1 answer
138 views

Handedness bias in Raven's Matrices

A few years ago I tried a Raven's Matrices IQ test on the Internet. In every test the bottom right element had to be deduced and this could always be done by scanning the first two rows to determine ...
Chris Barry's user avatar
0 votes
1 answer
135 views

Impact of pre-college schooling on IQ (WAIS)?

Introduction I'll give context for my question from personal experience, but then I'll generalize my question so that it's broadly useful. When I was a child, my mother home schooled me. When I ...
icor103's user avatar
  • 141