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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23
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1answer
163k 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: ...
18
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2answers
1k 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 ...
18
votes
2answers
686 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 ...
16
votes
2answers
5k 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 ...
15
votes
2answers
2k views

How is intelligence correlated to beauty?

Recently, I read up several interesting questions on the web about the relationship between IQ and general intelligence and physiological symmetry. But more importantly, what explains the correlation? ...
15
votes
3answers
2k views

Intelligence and marriage satisfaction

A recent letter by a Princeton alumni stated: Men regularly marry women who are younger, less intelligent, less educated. It’s amazing how forgiving men can be about a woman’s lack of ...
14
votes
2answers
782 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 ...
12
votes
1answer
609 views

What are the benefits of dyslexia?

Reading the Wikipedia article on Dyslexia, it sounds very negative. The article defines Dyslexia as a learning disability, which I understand it is classified as. However, knowing individuals with ...
12
votes
2answers
444 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 ...
10
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2answers
2k views

What transient factors affect performance on IQ tests?

While performance on intelligence tests aim to measure an underlying relatively stable trait, there are presumably a range of transient factors that could temporarily lower or possibly even raise ...
9
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2answers
2k views

Is there an accurate online IQ test for measuring 160+ IQs?

Is there some (preferably free) online and accurate IQ test? One which does not give me an genius IQ and then tries to sell me a diploma. I need one which measures upto 160 sd15 (or higher). Such a ...
9
votes
2answers
1k 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 ...
9
votes
1answer
251 views

What is the effect of studying logic or mathematics on general thinking skills?

I frequently hear comments from people to the effect that "Studies have shown that students who take (intro) logic courses don't show any signs of improvement in logical/rational/critical thinking." ...
9
votes
1answer
184 views

Are intelligence scores correlated with detection of second stimulus in an Attentional Blink test?

Definitions Attentional Blink: An attentional blink is a phenomenon where when presented with rapid visual stimuli if you are asked to track two particular stimuli you will fail to notice the second ...
8
votes
2answers
282 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 ...
8
votes
2answers
200 views

Can the daily use of two or more languages impact cognitive capacity?

I've read the following threads: Is it possible to think in a second language? Does language and/or culture affect an individual's cognitive capacity? is it possible to think without language? ...
8
votes
1answer
231 views

How does the mind build a model of reality?

I'm interested if there has been any research or experiments that deal with how the human mind creates and perpetuates the idea of knowing something. I'm struggling to concisely express the question, ...
8
votes
1answer
211 views

Do ability tests predict maximal more than typical job performance?

I have often read that ability tests are indicative of what people "can do", but that job performance also depends on what people "will do". For example, Ackerman and Beier (2012) wrote that: ...
8
votes
0answers
377 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 ...
7
votes
5answers
353 views

Does an exceptional working memory inhibit intelligence?

According to the Fox News article "Chimps Smarter Than Humans in Memory Test" chimps were able to significantly outperform humans in a simple working memory task. I quote one part of the article in ...
7
votes
1answer
1k views

Are IQ tests “biased” against individuals with Asperger's Syndrome?

One person makes the claim over at his response to the Quora question Do people with Asperger's have above-average IQs simply because the ones with below-average IQs simply get diagnosed with autism ...
7
votes
3answers
582 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 ...
7
votes
1answer
111 views

What are the effects of negative self image on cognition and brain function?

All other things considered equal, what are the effects of a negative self image, on cognition and brain function? Are there any studies that would have specific data supporting cognitive outcomes ...
6
votes
3answers
776 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 ...
6
votes
3answers
237 views

What causes an individual to not be able to hold all the details of a large project in memory?

Background: First of all, I'm not in any kind related to cognitive science, I'm a programmer. I'm not even sure that it's the right place for asking my question, but I'll try anyway. So, first of all, ...
6
votes
1answer
419 views

Does breastfeeding lead to increased intelligence?

Several studies suggest that breast-fed babies become more intelligent children than formula-fed babies (e.g., Lucas et al 1992). Questions To what extent overall does research support the ...
6
votes
3answers
274 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 ...
6
votes
2answers
350 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 ...
6
votes
1answer
6k views

Does masturbation in men negatively affect cognitive processes?

Gary Wilson has mentioned that porn and masturbation is an addiction that negatively affect mental performance. Moreover, there is some "pseudo-science" claiming that abstaining from masturbation ...
6
votes
1answer
562 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 ...
6
votes
0answers
431 views

Cultural brain hypothesis and gene-culture co-evolution

Recently, Joseph Henrich of UBC has been promoting his cultural brain hypothesis. The goal is to explain a selection pressure behind the development of the human brain and general intelligence. The ...
6
votes
0answers
163 views

What is the distribution of performance in academic programming subjects?

On Programmers SE there is a popular question about scientific evidence for whether some people either are or are not able to program. One person cites an unpublished manuscript by Dehnadi and ...
5
votes
2answers
605 views

Is variation in human brain size related to mental functioning?

It seems that the head size of human beings has evolved to be relatively similar, yet there is still some amount of variation. While I'm sure the correlation is not absolute, I read that larger heads ...
5
votes
1answer
629 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, ...
5
votes
1answer
889 views

Effect of Physical Exercise on Intelligence/IQ

I am interested in empirical research relevant to answering the following questions: What is the effect of physical exercise on IQ/intelligence? Does any such effect vary by type of exercise? e.g. ...
5
votes
1answer
608 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 ...
5
votes
2answers
524 views

Why don't people read instructions?

Some people are very careless when reading instruction on a work task they've been given or in reading any other kind of text. They would skip some of the sentences, not get deep into other and ...
5
votes
1answer
262 views

Why do dual N-back games use certain letters?

Every implementation of dual n-back that I've ever seen uses the set of letters 'C', 'H', 'K', 'L', 'Q', 'S', 'R' and 'T'. Why is that?
5
votes
1answer
341 views

What hidden latent variables could be responsible for the high correlation between WORDSUM and IQ?

WORDSUM is a measure of vocabulary ( see sample items here) where the test taker has to select which of a set of words has the most similar meaning to a target word. There's been some discussion of ...
4
votes
3answers
501 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?
4
votes
2answers
223 views

Duration-independent intelligence tests

Being able to measure intelligence (or the problem-solving aspect of it) quantitatively could be indispensable in fields like cognitive science or artificial intelligence. Obviously, IQ tests aren't ...
4
votes
1answer
824 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 ...
4
votes
1answer
4k 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 ...
4
votes
1answer
5k 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 "scaled" to an IQ result. As we all know, IQ results depend on the age of individual tested. So I was ...
4
votes
1answer
90 views

Is “doing everything in your head” a good proxy for intelligence?

Suppose Bob never takes notes in class and just mentally "gets" a subject. Is this ability of mentally learning a subject without actively recording the information a good proxy for intelligence?
4
votes
1answer
58 views

How are the questions in IQ tests formulated?

I would like to know how psychologists come up with the questions they include in an IQ test and how they know that those questions will accurately measure intelligence? How has it been proved that IQ ...
4
votes
1answer
83 views

Learned dyslexia? adult predicament from childhood teacher´s incompetence?

I have a friend, over 30, who is convinced she cannot really read. Of course; she can read, but she struggles so much with sorting letters into words that she cannot absorb the content. Playing - say ...
3
votes
3answers
189 views

How did the unique features of human intelligence evolve?

I have been debating the following topic with a friend. She argues that humans do not descend from chimpanzees or orang-utans, because if we did, such animals would share the same cognitive thinking ...
3
votes
2answers
87 views

Does a more ergonomic and user friendly interface/device make the human brain work less?

There was an interesting discussion on UX.StackExchange related to washing machines and their front windows. I was very surprised that it took me like 2 minutes or so to figure out why the washing ...
3
votes
3answers
510 views

Improving Speed of Thinking

What are some ways one can improve his/her speed of thinking and reasoning ? I am looking for some easy to follow strategies that can be systematically applied. (I am presuming it can be learnt/ ...