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Questions tagged [intelligence]

For questions about levels of abstract thought, understanding, self-awareness, communication, reasoning, learning, having emotional knowledge, retaining, planning, and problem solving, their roles in education, testing such levels, and deficiencies in these levels.

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34 votes
2 answers
215k views

How valid is Lumosity's Brain Performance Index and what normative information is available?

Background There is a test called Lumosity's Brain Performance Index. A sample profile of scores might be: ...
40pro's user avatar
  • 451
25 votes
2 answers
2k views

Does language and/or culture affect an individual's cognitive capacity?

Some languages have multiple expressions to identify, address, comprehend, and interpret a single concept and/or experience. Are limits placed on understanding and describing aspects of cognition due ...
CheeseConQueso's user avatar
9 votes
1 answer
50k views

How to calculate IQ score based on raw score and adjust for age?

I am having a hard time grasping how IQ scores are calculated. I think it has something to do with their age score ratio multiplied by 100. Say I have a test that holds 30 questions. How would I ...
ProfessorIQ's user avatar
6 votes
1 answer
2k views

What is the correlation between Grade Point Average (GPA) and intelligence?

What is an authoritative empirical estimate of the correlation between pscyhometric measures of intelligence and Grade Point Average (GPA)? What are the main factors that influence the size of the ...
Jeromy Anglim's user avatar
10 votes
1 answer
4k views

How can psychometry measure the very high IQ's in adults?

From Wikipedia's page on Mental age, we learn that: Originally, the differences between mental age and chronological age were used to compute the intelligence quotient, or IQ. This was computed ...
quark1245's user avatar
  • 201
10 votes
1 answer
45k views

How are Raven's Matrices scores converted into age-adjusted IQ?

There are IQ tests based only on Raven's matrices. I wonder how a raw score on such a test is "scaled" to an IQ result. As we all know, IQ results depend on the age of individual tested. So ...
xemlmrx's user avatar
  • 103
8 votes
3 answers
2k views

Gender differences in IQ among undergraduate psychology students

While marking undergraduate coursework relating to gender differences, it occurred to me that there could well be systematic effects of gender on IQ among the undergraduate populations relied on for ...
Eoin's user avatar
  • 1,512
8 votes
3 answers
2k views

What exactly is IQ, and how to develop or improve it?

Some people are said to have exceptionally high IQ. What exactly is that supposed to mean? Is it possible to develop high IQ if one doesn't have it? If yes, then how?
Aquarius_Girl's user avatar
4 votes
3 answers
1k views

Does the scarcity of female programmers, suggest that men are more intelligent than women?

Developing software is simultaneously artistic and scientific, which accounts for its appeal for some of the smartest and intuitive people on the planet There is a generally observable and most ...
Bleeding Fingers's user avatar
2 votes
1 answer
521 views

Is it possible to increase/train your intelligence? [duplicate]

Is it possible to raise your IQ (best correlate for g I know of)? Does brain training help? I have never taken a psychologist administered IQ test before, but I did take a reputable online IQ test ...
Tobi Alafin's user avatar
24 votes
2 answers
8k views

Free online intelligence test with norm table, high reliability, and must be printable?

I am looking for a general intelligence test which meets the following requirements: available online for free there is a table which translates "points" to IQ (I don't want a hidden online ...
Julia's user avatar
  • 341
13 votes
1 answer
1k views

Is there any evidence that fluid intelligence is malleable?

So although working memory training was somewhat of a fad (and I guess some benefits did come out of training, like improved attention/executive function), reviews such as Melby-Lervåg et al. (2016) ...
PKiani's user avatar
  • 211
11 votes
3 answers
15k views

What causes a person to be curious, inquisitive and explorative?

Why do humans (primates) tend to be curious, inquisitive and explorative? They want to know things that they do not. They explore stuff in an attempt to find something new which makes them ...
Bleeding Fingers's user avatar
9 votes
2 answers
7k views

Does practicing Ravens Progressive Matrices tests inflate your IQ score?

I'm 16 years old and a year ago I got obsessed about IQ. I took a Raven IQ test and scored 115. Then during the autumn and winter of last year I took some more IQ tests using RPM and scored 126 on ...
ultraboss101's user avatar
4 votes
1 answer
1k views

Does a non-knowledge based, or knowledge corrected IQ test exist, and what are its results per race?

If you google IQ gap race and open the google images, you will see many diagrams showing the differences. I went on some IQ test pages, and I noticed that the test includes mathematical ...
Toskan's user avatar
  • 149
27 votes
1 answer
5k views

Is there a term for individuals who can "visualize" numbers and advanced mathematics?

I recently saw an episode of 60 Minutes about Jacob Barnett, a 13 year old boy who is currently attending advanced physics classes at a local university and was portrayed by the show as being a child ...
Josh's user avatar
  • 5,390
12 votes
2 answers
28k views

To what extent is time to complete an intelligence test incorporated into the IQ score?

In this previous question on scoring IQ tests the OP asked about the effect of speed of test, but it was a bit peripheral to the core question. So I thought I'd ask it as a separate question. To ...
Jeromy Anglim's user avatar
10 votes
1 answer
357 views

Does classical music enhance intelligence in children more than other genres?

This question is based on a previous question I have written on Parenting SE: Does playing classical music for infants and young children make them smarter? Question: Are these claims actually ...
Stan Shunpike's user avatar
9 votes
2 answers
424 views

How do cognitive scientists measure creativity?

Einstein said once something like creativity is more important than intelligence. Intelligence as it is measured is really one's speed and efficiency at processing information. How one processes the ...
201044's user avatar
  • 301
8 votes
1 answer
4k views

How does raw IQ change over the lifespan at the group-level?

In the classic review of intelligence research (Intelligence: Knowns and Unknowns), Neisser et al (1996) write the following Stability. Intelligence test scores are fairly stable during ...
Jeromy Anglim's user avatar
7 votes
2 answers
738 views

How to interpret a BBC news article on the effect of race on intelligence?

In spring 1998, Robert Plomin claimed to have discovered a gene linked with intelligence. More recently, the Human Genome Project was cautious when approaching areas implying racial differences since ...
user avatar
7 votes
0 answers
656 views

How much sleep is required to restore maximum cognitive functioning? [closed]

Background: Recently I have really messed up my sleep schedule due to my procrastination. The internet points to some very basic conclusions but I would like to see actual experiments on effects of ...
Aman's user avatar
  • 179
6 votes
3 answers
7k views

Do stimulants increase the IQ tests score for everyone?

There is some meta-analytic evidence that stimulants increase the IQ test scores of ADHD children by 2 to 7 points (Jepsen et al., 2009). Although giving stimulants to non-ADHD children may be ...
got trolled too much this week's user avatar
6 votes
1 answer
1k views

Why might a person get widely varying scores on different online IQ tests?

Online IQ tests often yield wildly varying results (say 60 - 150). These are actual values obtained by repeated measures. It is puzzling, because it's such a wide range. How can the same person be ...
user75131's user avatar
4 votes
1 answer
268 views

Is working memory equivalent to fluid intelligence?

Some report indicates that working memory capacity is equal to the g factor, so I'm wondering what is actual point of view on this among psychologists. Colom, R., Abad, F. J., Rebollo, I., & Shih,...
Lil'Lobster'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
1 answer
184 views

Are there researched approaches to learning a subject more quickly?

TLDR at bottom. So from my knowledge(correct me if I'm wrong) there is no evidence to suggest that we can improve general intelligence. But what about improving skills/intuition in specialized fields ...
Daniel LockHart's user avatar
27 votes
2 answers
9k views

How is intelligence correlated to beauty?

Recently, I read several interesting questions on the web about the relationship between IQ and general intelligence and physiological symmetry. But more importantly, what explains the correlation? Or ...
Yuruk's user avatar
  • 371
18 votes
4 answers
4k views

Public domain scientific intelligence test available for use in research

The IPIP is an example of a public domain scientific personality inventory that can be used for research. Are there any good public domain scientific measures of intelligence? Requirements Do not ...
Jeromy Anglim's user avatar
18 votes
2 answers
6k views

Does super-intelligence necessary lead to consciousness, self awareness, freewill or emotion

After seeing this talk, the question popped in my mind. The idea is that as soon as a system is complex enough or intelligent enough, it able to act on its own. It seems to be a common belief. For ...
Benjamin Crouzier's user avatar
18 votes
1 answer
1k views

What are the IQ correlations between relatives?

Bouchard and McGue (1981) wrote a review article (linked here) that summarized the correlations between relatives. McGue asserted in a recent talk (that I'm not able to link) that he's not aware of ...
user1205901 - Слава Україні's user avatar
16 votes
2 answers
59k views

What is the meaningful difference between someone with a 145 IQ compared to a 100 IQ?

I am a lay person and new to this, and while I do understand that 145 IQ means 3 SDs up from the mean, I want to have a rough idea of what it means in real-life examples, from people who have ...
Enne's user avatar
  • 163
13 votes
2 answers
740 views

Does intelligence cause greater alcohol consumption?

I just stumbled on a blog post that asserts that more intelligent people drink more than less intelligent people. The author writes: Controlling for a large number of demographic variables, such ...
Jeromy Anglim's user avatar
13 votes
3 answers
9k views

Why have historically most inventors been men?

I noticed something strange when I looked at about.com's list of famous historical inventors. You can see that most of the inventors are men, and only a few are women. Can this be explained by ...
xralf's user avatar
  • 373
12 votes
3 answers
818 views

How is it possible for psychometricians to develop IQ tests for people smarter than them?

After all, while psychometricians definitely have above-average IQs, they probably don't have IQs over, say, 160. If psychometricians already know what the right answers are (and how to obtain the ...
InquilineKea's user avatar
  • 2,317
12 votes
3 answers
4k views

How to estimate IQ for public figures?

Background: I read a question on Quora that asked how intelligent is Barack Obama. A wide range of arguments were presented. The tone of the answers was not neutral because of the political context of ...
Jeromy Anglim's user avatar
10 votes
2 answers
482 views

What is the optimal exercise regime for improving cognitive functioning?

It seems that researchers agree that physical exercise increases cognitive abilities. This seems to work universally for all ages: children, adults and old people. It is suggested that everyone ...
Max's user avatar
  • 201
10 votes
3 answers
3k views

Does motivation and interest correlate highly with IQ and can someone be smart but perform poorly in a particular field?

Suppose a person is considered intelligent based on his IQ score. For example, suppose Bob has a high IQ score and is very interested in pure mathematics. He would most probably excel in this field. ...
intelligentguy122's user avatar
9 votes
1 answer
394 views

How do laypeople form a judgment that another person is smart or intelligent? [closed]

I am curious: When do we label a person as being 'intelligent', 'smart' or 'clever'? This is subjective, and it seems unlikely that it is possible to reach a bulletproof definition. A high IQ has been ...
Numbersandsoon's user avatar
9 votes
1 answer
6k views

Does IQ affect learning speed?

Supposedly, people of higher levels of intelligence do learn faster than people of lower levels of it. But this is an awfully coarse observation, and different people can learn at drastically ...
InquilineKea's user avatar
  • 2,317
9 votes
1 answer
655 views

Is there a relation between speed of executing a task and ones intelligence?

I recently came across a code refactoring problem. Considering the risk of getting into a risky bug later I switched to my usual mode of think and solve it, rather than go and make the changes fast. ...
Sushant's user avatar
  • 341
9 votes
1 answer
2k views

Is the decline of fluid IQ with age less severe for professors and scientists than it is for other people?

This article in Time magazine suggests that engaging in challenging mental tasks may be associated with lower rates of mental decline in older adults. The article states that: In one study, ...
InquilineKea's user avatar
  • 2,317
8 votes
1 answer
308 views

Sleep deprivation and task performance

Case: In case of an adult, the average adult sleep time required is 7.5 to 8 hours. Suppose the person (aged between 23-29) has slept only 6 hours, or less than the average time (7.5 to 8 hours). ...
New one's user avatar
  • 333
7 votes
1 answer
203 views

Are there any mental activities that can be detrimental for intelligence?

It is well known that we get better at the things we practice, but is it possible to stimulate the brain with activities in such a way that general or specific intelligence is weakened? Also, are ...
C.T.'s user avatar
  • 171
6 votes
2 answers
2k views

How is age related change in IQ measured if tests use age specific norms?

In a comment to this question about age related IQ decline in professors and scientists, the following comment was left: I noticed that lot of IQ tests (RPM or California) have different norms ...
Jeromy Anglim's user avatar
6 votes
3 answers
10k views

Can a person be brilliant even though slow at resolving problems?

Can a person be very intelligent, able to solve difficult problems if given enough time, yet really a slow thinker? Especially if nervous. Could such a slow thinking brilliant person get all the ...
201044's user avatar
  • 301
5 votes
1 answer
603 views

Is the price of higher intelligence and more complex behaviours more mental illness?

"Our work shows that the price of higher intelligence and more complex behaviours is more mental illness." -Professor Seth Grant Professor of Molecular Neuroscience, University of Edinburgh Is ...
Greg McNulty's user avatar
  • 1,926
5 votes
1 answer
445 views

How far can we train mental calculation?

Mental calculators are people with a prodigious ability in some area of mental calculation, such as multiplying large numbers or factoring large numbers. Unfortunately I forgot where I heard it, but ...
draks ...'s user avatar
  • 1,828
5 votes
1 answer
205 views

Does night-sleep-deprivation have any effect on cognitive performance?

Sleeping during the day might lead e.g. to vitamin D deficiency. But I am interested in what effects might night-sleep-deprivation have on cognitive faculties. Does sleeping during the day and ...
Cauchy's user avatar
  • 151
5 votes
1 answer
441 views

What factors affect the g factor?

Is / are there any scientific studies on factors which affect the general intelligence (g) factor? I did a Google search, but could not find any academic papers on the topic.
Guest's user avatar
  • 51