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General thoughts on brain training: Lumosity is a commercial tool that aims to improve brain functioning. In general, I am sceptical of the potential for "brain training programs" to improve cognitive functioning in a generalised way (e.g., see this Nature discussion). Practice is powerful, but tends to be domain specific. So if you want to become skilled ...


24

In the general population there does seem to be a positive correlation between psychometrically measured intelligence and observer rated attractiveness (Kanazawa, 2011). The power of the relationship seems to be medium to low. Two possible explanations for this relationship are: Intelligence and physical attractiveness both depend on physical health; ...


22

A large part is cultural, because, until recently, the people with the best education and most of the money have been men. Sexism kept women out of schools for a long time. It also kept pushing women into what were perceived to be more appropriate studies (nothing technical) when they were allowed into schools. Have a look at the sexism page at Wikipedia. ...


22

The short answer: No, sex differences in professions is not a good basis for judging the intelligence of males and females. I would like to address some of the assumptions and misconceptions in the question. First, I would like to deconstruct the question, and then answer it. Deconstructing the question One of the earlier titles of the question was "Are ...


20

Sounds like a form of Synesthesia, in particular it sounds like Number Form Synesthesia mixed with Grapheme-color Synesthesia: A number form is a mental map of numbers, which automatically and involuntarily appears whenever someone who experiences number-forms thinks of numbers. Number forms were first documented and named by Francis Galton in "The ...


19

This is a hot topic of debate, so my answer will be an incomplete one. There are actually two separate questions here. One is on language and the other one is on environment. Language: My answer is no; different languages do not limit the conceptual repository of human mind. The current ongoing debate is partially on the Pirahã language. Everett studied ...


18

As the other response noted, a lot of the answers will depend on how you define the terms. Here, I will use Legg & Hutter's (2007) definition of intelligence, where an agent is intelligent if it can achieve a large variety of goals in a large variety of environments. For instance, a chess-playing robot is great at achieving the goal of winning at chess ...


15

Depends which IQ test you use - individuals with ASDs show a typical "pattern" on the WAIS, which can cause it to appear like they have lower IQs. When tested with tests which aren't biased in this way, they appear to have the same IQ range as neurotypicals. The assumption that those with an ASD are cognitively impaired pervades both popular and scientific ...


15

One relatively recent review on this topic is Rushton & Ankney (2009). They report that there have been a large number of studies with varying results: 28 studies, covering a total of 1,389 subjects, used brain imaging techniques to estimate the size of the brain. Correlations with general mental ability (GMA) ranged from 0.04 to 0.69, with an ...


15

This answer is a bit more anecdotal, but perhaps it's useful. From the perspective of an academic researcher (which perhaps is similar to Einstein's perspective), there is a balance between reading the literature and conducting your own research. There is a balance between learning new skills and applying those skills to your own projects. Even within the ...


14

My general sense from reading the intelligence literature is that I would not expect there to be much of a relationship between exercise and intelligence. For example, if you read Neisser et al (1996) you can get an overview of the intelligence literature. From the review, you can get a sense of just how difficult it is to systematically increase ...


14

Is husband and wife intelligence corelated? By way of background, Mascie-Taylor (1989) report IQ correlations between husbands and wives in two british samples to be r=.40 and r =.37 respectively. I had a little difficulty discerning the sample size as it's not reported in the 1989 paper. But from another paper I got the sense that each sample might have ...


13

This is a big topic, which I don't feel I can do justice to, but here are a few thoughts nonetheless. It's also important to see how resort to biological arguments could help to perpetuate such gender differences. Brain is not behaviour Brain differences are irrelevant if they do not manifest in behaviour. Thus, to show that size of structure of the brain ...


13

My understanding is that self-report measures of emotional intelligence tend to have very weak correlations with traditional measures of cognitive ability, and ability-based measures of emotional intelligence have low to moderate correlations with traditional measures of cognitive ability. The following provides relevant extracts from Conte (2005) that ...


12

Paper IQ Test: EDIT: There is a list of printable tests including an IQ test at http://personality-testing.info/printable/, it looks to be of standard internet IQ test quality... Here is a printable version of an IQ test developed on this website. It is no where near the quality of a professional IQ test but may be interesting and its internal ...


12

The conclusions drawn in Inoue & Matsuzawa's (2007) study, which seems to be available here, are suspect. First off, the sample sizes (6 chimp, 9 human subjects) are simply too small to draw good inferences about working memory, at least about human working memory, but as I imagine chimps are somewhat expensive subjects, c'est la vie. Secondly, and more ...


12

Literal IQ: In a literal sense, IQ is a standardised score derived from intelligence tests. Typically IQ is scaled to have a a mean of 100 and a standard deviation of 15. In that sense, it is a normative score. For children, the norm is defined relative to other children of a similar age, for adults, it is defined relative to an adult population. IQ as g: ...


12

You are asking two very excellent questions. Is the decline in fluid intelligence commonly accepted as true? These days it seems generally accepted, that the trend is true. However, this hasn´t been the case a few yeas ago, e.g. see the introduction in Elsayed, Ismail, & Young (1980) for a little impression. The reason behind this is the limited ...


11

I have number Synesthesia, actually, and numbers do indeed appear as a specific pattern inside my head -- I have never not seen numbers this way, and have even drawn my number map for my own edification and to show people what I'm talking about when I try and explain my synaesthesia to them. Numbers are not individual digits to me; they are one huge entity....


11

As a general note, precision in measurement of intelligence declines as you move to more extreme levels. There is greater uncertainty in measurement in the 145 range than there is at the 100 range. Norm samples get smaller, and most measures of intelligence are designed for the normal range. Categories: You might find the article on IQ classification useful....


10

As I mentioned in my comment: IQ is a measurement that is believed to correlate with certain aspects of 'intelligence'. Executive function is "an umbrella term for cognitive processes such as planning, working memory, attention, problem solving, verbal reasoning, inhibition, mental flexibility, multi-tasking, initiation and monitoring of actions." The two ...


10

This is not my area, but I did a little research and found a few things: Silverman (2000) has an interesting article discussing children who are gifted but also have a learning disability. The article makes a number of interesting points about how other skills are often developed in order to compensate for a given disability (e.g., like how people who are ...


10

Seattle Longitudinal Study: You might want to have a read about The Seattle Longitudinal Study of Adult Intelligence. There's a summary of the study on this website. To quote the website: The Seattle Longitudinal Study of Adult Intelligence has followed a group of more than 5000 people for well over four decades. The program began in 1956 and ...


10

Kramer et al 2008 is an excellent study of this question because it utilizes intervention, thus lending strength to the claim of causation, concluding that IQ was "significantly higher in the experimental group for both reading and writing". But is it the milk itself? Some argue that it's also the skin-to-skin contact, and the mother-child bonding. ...


10

IQ scores in general: An IQ score is a normative score. The norm group is typically defined as the general population, and where the respondent is a child, the norm group is defined in terms of the general population of children of that same age. IQ scores typically have a mean of 100 and a standard deviation of 15. In order to get an estimate of ...


10

There is little neurological evidence that finds a difference between men and women. However there are psychological studies that do find a small difference in mental strengths. This interesting TED talk debunking psychological myths by a lecturer from the University of Liverpool discusses the psychological differences between men and women. Males and ...


10

Recent studies on this topic deal with more detailed questions, that are analysed using structural equation models (Deary et al., 2006). A main goal has been the identification of specific genes. No single genes have been found until today and Sternberg (2012) also points out that the concept of heritability itself is indirect and maybe inappropriate if ...


9

In general, I'd hypothesise that "memory-training" programs will not lead to domain-general increases in fluid intelligence nor working memory. As general background, you might want to check out the literature on expert memory. Practice is very effective at improving performance on the practised task. Transfer is real and does exist, but it is often small ...


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