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16 votes

Is the average IQ still 100?

Intelligence Quotient is a relative score, comparing you to the current average. It is not a fixed, raw intelligence score. When current IQ tests are developed, the median raw score of the ...
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13 votes
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What is the meaningful difference between someone with a 145 IQ compared to a 100 IQ?

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. ...
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12 votes
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Is Fluid Intelligence Dropoff With Age an Established Fact?

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 ...
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10 votes
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How exactly do we construct perceived IQ by facial features?

The images you've linked are composites, and so probably don't contain the characteristics by which raters were able to judge IQ accurately. The original article (Kleisner, Chvátalová, & Flegr, ...
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10 votes
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Why does Asperger's Syndrome seem to overlap with high IQ?

Short answer: Some traits of Asperger's are found in those with high intelligence, and vice versa. In the grander scheme of things, however, it appears that correlation does not imply causation. ...
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10 votes
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What are the IQ correlations between relatives?

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 ...
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10 votes

Is there any evidence that fluid intelligence is malleable?

Is there any evidence of malleability of fluid intelligence? In the downward direction, definitely yes. There are many ways you can directly pull fluid intelligence downwards. Things like being ...
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  • 700
8 votes

Is the Flynn effect autism?

The Flynn effect refers to the tendency over the last century or so for IQ scores to increase each generation by a few points. There is no link between vaccination and autism. It is pseudo-scientific ...
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8 votes

Is a low Emotional Intelligence (EQ) pathological?

Shortly , a low EQ is not a sufficient condition to diagnose a mental psychiatric disorder. This is the DSM-V Proposal for the Definition of Mental/Psychiatric Disorder All these features have to be ...
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  • 1,504
8 votes

Does practicing Ravens Progressive Matrices tests inflate your IQ score?

Yes, practice even as simple retest improves scores in matrices-like tests: Raven’s APM scores increase significantly on repeated testing without any targeted training (e.g., Bors & Vigneau, ...
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7 votes

Is the average IQ still 100?

In the US or the UK, the tests are regularly re-normed to keep the average score 100. But if you use the UK/US average as a baseline to look at IQ scores around the world, then the "average IQ" ...
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7 votes

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

Consider, a normal IQ score falls between the range 85-115 which is approximately 70% of the population (and only 15% of people have an IQ of 115 or above), while an extended average IQ range tends to ...
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6 votes

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

Intelligence refers to a general cognitive capacity, it does not refer to knowledge in specific fields of study. This means that yes, it is possible to have high intelligence but have low knowledge / ...
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6 votes
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Does high IQ give cause to doubt an ADHD diagnosis?

Sounds to me like someone is making a logical fallacy here, though the origin of this fallacy isn't clear to me. We cannot go from 'poor academic performance', to 'not amounting to anything', to '...
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6 votes

Does learning (to play) music increase IQ?

Short answer The recent literature shows mounting evidence for beneficial effects of music on cognitive abilities. The big 'but' in the issue is how specific those effects are and whether they will ...
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  • 19.6k
6 votes

How do psychologists ensure they are measuring innate intelligence and not just education?

Short answer Any intelligence test will be designed for a certain target population. That target population's score is set at an index of 100 for the standard IQ test. The same test applied to people ...
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5 votes

Does schizophrenia cause a loss of intelligence?

Regarding schizophrenia and loss of IQ: I don't know how much we can say about the 'loss' of IQ in schizophrenia patients. If anything, it appears to me that a decrease in overall IQ is augmented by ...
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5 votes

Is there a correlation between high IQ and creativity?

Although the idea that IQ only enables creativity "up to IQ 120" is widespread (and repeated in pop-psych books such as those of Gladwell etc.), large scale studies of giftedness reliably find that ...
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  • 233
5 votes

Correlation between "mechanical aptitude" and IQ

Can you suggest me better literature? Am I using the wrong concepts? Are the references provided above "sufficient"? I recommend you take a step back and ask yourself what your question is, and ...
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4 votes
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Is the logic of "Herrnstein's syllogism" sound, and are its premises true?

Herrnstein's Syllogism, as shown above, comes from the 1971 article written for The Atlantic by psychologist Richard Herrnstein (Herrnstein, 1971). It argued that while socioeconomic status of ...
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  • 700
4 votes
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How to interpret intelligence test scores for an individual who has taken a test multiple times in quick succession?

General points about practice effects Intelligence tests differ in how much they are subject to practice effects. Practice effects can also be distinguished: Time between taking the test: The ...
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4 votes

Is there a graph with extroversion-introversion score on one axis and IQ on the other?

Extraversion and IQ typically have zero correlation. In Bates and Rock (2004),we suggested that if the arousal value of the testing environment varies, this might induce a modest correlation with IQ (...
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  • 233
4 votes
Accepted

Does sensory deprivation affect cognitive abilities?

This is a really neat question. A strong predictor of cognitive ability is one's environmental enrichment, or the stimulation of the brain in its physical and social surroundings. Those with sensory ...
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4 votes

Is critical thinking associated with IQ?

Critical thinking is an ill-defined concept in the cognitive sciences, so this question most likely has as many answers as there are measures of IQ and critical thinking. An accessible introduction to ...
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4 votes

Does anger lower a person's cognitive ability?

The first question that should be asked is, do you mean cognitive ability or IQ? They are intertwined, but different. Unfortunately, I can not comment. I'm going to answer based on the question in ...
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4 votes

Can a shorter IQ test be devised that provides a more approximate measure of IQ?

Yes, what you say is entirely possible. If precision is not as much of an issue, it is possible to devise a test (of anything, not just a test of IQ) which would return a score of, say, 115 plus or ...
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4 votes

What does it mean for there to be more variance within groups than between groups in IQ?

In the video he is discussing some work of Charles Murray (not sure how familiar you are with it). In any case, the main point of your confusion comes from the difference between presence and size. Dr....
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