High IQ people better looking

This is actually an old finding but it again shows how pervasive the influence of IQ is.

Our strongest personality traits can be deduced simply from our facial features, scientists believe.  Research shows those with higher IQs are usually good-looking, while those with wider faces are usually perceived as being more powerful and successful.

There is even evidence that sexual deviancy can be picked up from facial features, with paedophiles more likely to have minor facial flaws.

The new evidence means the judgments we make when we meet strangers - which is usually concluded in less than a tenth of a second - are often accurate.

Mark Fetscherin, professor of international business at Rollins College, Florida, has recently found a link between company profits and the shape of its chief executive's face.

In his new book, CEO Branding, Mr Fetscherin describes how the executive tended to have wider faces than the average male.

A wider face means that the person is viewed as dominant and successful, Mr Fetscherin said. He also found a positive link between that shape face and the profits of the company.

He told The Sunday Times: 'Facial width-to-height ratio correlates with real world measures of aggressive and ambitious behavior and is associated with a psychological sense of power.'

Elsewhere, scientists also believe people can decipher negative attributes from a person's face. At Cornell University, scientists showed subjects mugshots of those who were guilty and innocent and found the majority could tell them apart.

Researchers have also found that those with a high IQ tend to be better looking. An example is Kate Beckinsale, who won poetry awards as a teenager, then studied Russian literature and English at Oxford.

Actress Natalie Portman also graduated with a psychology degree from Havard in 2003. 

Leslie Zebrowitz, professor of social relations at Brandeis University, near Boston, said the trend was due to the high quality of DNA, with few mutations, that those people have inherited.  [Zeb gets it -- JR]

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More evidence of IQ as just one aspect of physical good functioning

IQ has a large range of physical correlates.  Odd for something that Leftists say does not exist

New research reveals a distinct association between male intelligence in early adulthood and their subsequent midlife physical performance. The higher intelligence score, the better physical performance, a study reveals.

Researchers at the Center for Healthy Aging and the Department of Public Health at the University of Copenhagen have studied the association between male intelligence in early adulthood and their subsequent physical performance, aged 48-56. The study comprised 2,848 Danish males born in 1953 and in 1959-61, and the results have just been published in the scientific Journal of Aging and Health.

"Our study clearly shows that the higher intelligence score in early adulthood, the stronger the participants' back, legs and hands are in midlife. Their balance is also better. Former studies have taught us that the better the results of these midlife tests, the greater the chance of avoiding a decrease in physical performance in old age", says PhD student Rikke Hodal Meincke from the Center for Healthy Aging

With a 10-point increase in intelligence score, the results revealed a 0,5 kg increase in lower back force, 1 cm increase in jumping height - an expression of leg muscle power, 0.7 kg increase in hand-grip strength, 3.7% improved balance, and 1.1 more chair-rises in 30 seconds.

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Your genes WON'T make you wealthy: Becoming rich is more about nurture than nature, study finds (?)

I add some skeptical comments at the foot of the report below.  The usual finding is that high IQ people tend disproportionately to be high income earners.  And IQ is of course highly hereditary

If your parents are rich, then you’re more likely to be wealthy too.

Scientists have long debated whether this is down to genetics or the culture in which children are raised.  Now, a new study claims to have finally settled the debate; nurture, it says, is far more important that nature when it comes to amassing wealth.

‘Innate biology is only a small factor in wealth’, Kaveh Majlesi, a professor of economics at Lund University in Sweden and co-author of the study told fivethirtyeight.com

Previous studies have attempting to find a ‘rich gene’ which might explain how genetic characteristics that cause people to be wealthy are passed down.

The latest research, however, found that the wealth of an adopted child – before receiving an inheritance – is similar to that of their adoptive parents, rather than their biological ones.

The study included data from 2,519 Swedish children who were adopted between 1950 and 1970.

The researchers then compared this to data on adults’ overall wealth in Sweden between 1999 and 2007. This allowed scientists to compare the wealth of the adult adoptees to the wealth of potential biological and adoptive parents.

The biological parents were tended to be younger, poorer and less-educated than the adoptive parents.

Researchers found the adoptive parents had 1.7 to 2.4 times more of an effect than the biological parents did on the adopted child’s adult wealth.

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I hate to rubbish a very carefully and laboriously done study but it is important to note that this is a study of WEALTH, not income. It is derived from data collected by the Swedish government for the purposes of its wealth tax. 

I have read the whole original study ("Poor Little Rich Kids? The Determinants of the Intergenerational Transmission of Wealth") and note that it showed great statistical care. 

It does not show much knowledge of people however.  It covers gifts in the form of bequests but otherwise omits the issue of gifts altogether.  The authors seem quite unaware that well-off people tend to give their kids money on various occasions and for various reasons.  My son, for instance, does well every birthday.

And since the adoptive parents in the study above were richer than the natural parents, it is almost certain that the adopted kids got more gifts -- thus accounting entirely for the finding that those kids had more wealth.  The study therefore tells us nothing about any biological effect -- including the influence of genes.

I might add the general point that wealth taxes of any kind are quite like other taxes in that they provoke avoidance (legal)  and evasion (illegal).  And the standard way of avoiding wealth taxes is to transfer funds to later generations in the form of gifts.  Gift taxes hinder but do not prevent that. So the fact that the data originate from official Swedish wealth tax statistics is rather unfortunate for this study.  It guarantees that a LOT of intergenerational giving did go on.  So the findings in this study would seem to be largely an artifact of Swedish law.

The data of the study is therefore not capable of supporting the conclusions of the study.  I can't say I am surprised by social scientists who know nothing about people.  I had a lot of fun pointing out the follies of my fellow social scientists during my own 20-year research career.  But I guess I shouldn't laugh!

IQ as a symptom of general biological fitness again

People with poor thinking skills may be at higher risk of heart attack or stroke, a study has shown. Scientists made the discovery after monitoring the progress of almost 4,000 individuals with an average age of 75 for three years.

At the start of the study, participants had their high-level thinking skills evaluated by tests and were graded accordingly.

Those in the lowest test score group were 85% more likely to have a heart attack and 51% more likely to have a stroke than members of the highest group.

Lead researcher Dr Behnam Sabayan, from Leiden University Medical Centre in the Netherlands, said: 'These results show that heart and brain function are more closely related than appearances would suggest.  'While these results might not have immediate clinical translation, they emphasise that assessment of cognitive function should be part of the evaluation of future cardiovascular risk.'

Dr Sabayan added: 'Performance on tests of thinking and memory are a measure of brain health. Lower scores on thinking tests indicate worse brain functioning.

'Worse brain functioning in particular in executive function could reflect disease of the brain vascular supply, which in turn would predict, as it did, a higher likelihood of stroke.

'And, since blood vessel disease in the brain is closely related to blood vessel disease in the heart, that's why low test scores also predicted a greater risk of heart attacks.

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A syndrome of general biological fitness appears again

I have been pointing out for many years that there seems to be a syndrome of general biological fitness -- such that high IQ people are healthier, live longer and have better emotional balance. High IQ, in other words, is just one part of general bodily good functioning. The recent study below is another indicator of such an association and goes on to show that the link is genetic.  Some people are just born healthier and fitter. If so, all your bits work well -- including your brain, which is just another bodily organ.   A wise man from long ago knew that.  He said: "For he that hath, to him shall be given: and he that hath not, from him shall be taken even that which he hath." (Mark 4: 25).  "All men are equal" exists neither in the Bible nor in life

The association between intelligence and lifespan is mostly genetic

By Rosalind Arden et al.

Abstract

Background: Several studies in the new field of cognitive epidemiology have shown that higher intelligence predicts longer lifespan. This positive correlation might arise from socioeconomic status influencing both intelligence and health; intelligence leading to better health behaviours; and/or some shared genetic factors influencing both intelligence and health. Distinguishing among these hypotheses is crucial for medicine and public health, but can only be accomplished by studying a genetically informative sample.

Methods: We analysed data from three genetically informative samples containing information on intelligence and mortality: Sample 1, 377 pairs of male veterans from the NAS-NRC US World War II Twin Registry; Sample 2, 246 pairs of twins from the Swedish Twin Registry; and Sample 3, 784 pairs of twins from the Danish Twin Registry. The age at which intelligence was measured differed between the samples. We used three methods of genetic analysis to examine the relationship between intelligence and lifespan: we calculated the proportion of the more intelligent twins who outlived their co-twin; we regressed within-twin-pair lifespan differences on within-twin-pair intelligence differences; and we used the resulting regression coefficients to model the additive genetic covariance. We conducted a meta-analysis of the regression coefficients across the three samples.

Results: The combined (and all three individual samples) showed a small positive phenotypic correlation between intelligence and lifespan. In the combined sample observed r = .12 (95% confidence interval .06 to .18). The additive genetic covariance model supported a genetic relationship between intelligence and lifespan. In the combined sample the genetic contribution to the covariance was 95%; in the US study, 84%; in the Swedish study, 86%, and in the Danish study, 85%.

Conclusions: The finding of common genetic effects between lifespan and intelligence has important implications for public health, and for those interested in the genetics of intelligence, lifespan or inequalities in health outcomes including lifespan.

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Your poverty is in your brain

We sort of knew that already.  The correlation between low IQ and poverty is well-attested. The latest journal article below however takes the story a bit further in that it identifies which brain regions are responsible.  Certain areas of poor people's brains are actually shrunken! The authors seem to have frightened themselves by their boldness, however, as they have tacked a totally illogical conclusion on to their findings.

If poverty is a result of the shrunken brain you were born with, does it not follow that there is not much you can do about it?  The authors below avoid that conclusion.  Instead they say that poor households "should be targeted for additional resources aimed at remediating early childhood environments".   An hereditary problem can be fixed by changing the environment?  That's a pretty good Non Sequitur as far as I can see.

It's not totally daft in that genetics accounts for only about two thirds of IQ.  There are some other influences that have an effect.  But all the research shows that family environment is NOT part of those other influences on IQ.   It's jarring but that is what all the twin studies show. So the hairy lady and her colleagues below are just ignoring the evidence.  But they need to in order to sound nicely Leftist about it all.

Footnote:  The authors of course avoid the term "IQ" like the plague but the standardized tests  of  academic achievement they used are little more than IQ tests and correlate highly with acknowledged measures of IQ.  So their findings show that IQ, income and brain development all cluster together.


Association of Child Poverty, Brain Development, and Academic Achievement

By Nicole L. Hair et al.

ABSTRACT

Importance:  Children living in poverty generally perform poorly in school, with markedly lower standardized test scores and lower educational attainment. The longer children live in poverty, the greater their academic deficits. These patterns persist to adulthood, contributing to lifetime-reduced occupational attainment.

Objective:  To determine whether atypical patterns of structural brain development mediate the relationship between household poverty and impaired academic performance.

Design, Setting, and Participants:  Longitudinal cohort study analyzing 823 magnetic resonance imaging scans of 389 typically developing children and adolescents aged 4 to 22 years from the National Institutes of Health Magnetic Resonance Imaging Study of Normal Brain Development with complete sociodemographic and neuroimaging data. Data collection began in November 2001 and ended in August 2007. Participants were screened for a variety of factors suspected to adversely affect brain development, recruited at 6 data collection sites across the United States, assessed at baseline, and followed up at 24-month intervals for a total of 3 periods. Each study center used community-based sampling to reflect regional and overall US demographics of income, race, and ethnicity based on the US Department of Housing and Urban Development definitions of area income. One-quarter of sample households reported the total family income below 200% of the federal poverty level. Repeated observations were available for 301 participants.

Exposure  Household poverty measured by family income and adjusted for family size as a percentage of the federal poverty level.

Main Outcomes and Measures:  Children's scores on cognitive and academic achievement assessments and brain tissue, including gray matter of the total brain, frontal lobe, temporal lobe, and hippocampus.

Results:  Poverty is tied to structural differences in several areas of the brain associated with school readiness skills, with the largest influence observed among children from the poorest households. Regional gray matter volumes of children below 1.5 times the federal poverty level were 3 to 4 percentage points below the developmental norm (P less than .05). A larger gap of 8 to 10 percentage points was observed for children below the federal poverty level (P less than .05). These developmental differences had consequences for children's academic achievement. On average, children from low-income households scored 4 to 7 points lower on standardized tests (P less than .05). As much as 20% of the gap in test scores could be explained by maturational lags in the frontal and temporal lobes.

Conclusions and Relevance:  The influence of poverty on children's learning and achievement is mediated by structural brain development. To avoid long-term costs of impaired academic functioning, households below 150% of the federal poverty level should be targeted for additional resources aimed at remediating early childhood environments.

JAMA Pediatr. Published online July 20, 2015. doi:10.1001/jamapediatrics.2015.1475

IQ rediscovered in Britain

Across Britain, teenagers are awaiting nervously for their GCSE results to arrive next month.  But however they fare, they can put some of their grades down to their parents, scientists suggest.

In what is likely to further fuel the endless nature versus nurture debate, researchers found between 54-65 per cent of GCSE results are down to nature – the genes we inherit.

Genes were more important than the role played by the home and school combined. Home was responsible for 14 per cent of GCSE results and school quality 21 per cent.

The new research showed the same genes affect performance across a much wider spectrum of subjects than just English, Maths and Science, which earlier research found to be about 60 per cent down genetically decided.

Genetic factors also affected results in history and geography, second languages, business studies, computing, art and drama, the researchers found.

Scientists from King's College London analysed genetic data from 12,500 identical and non-identical twins to assess the importance of genetic factors in academic achievement.
GCSE SUCCESS IS IN YOUR GENES

The new research showed the same genes affect performance across a much wider spectrum of subjects than just English, Maths and Science, which earlier research found to be about 60 per cent down genetically decided.

Genetic factors also affected results in history and geography, second languages, business studies, computing, art and drama, the researchers found.

Scientists from King's College London analysed genetic data from 12,500 identical and non-identical twins to assess the importance of genetic factors in academic achievement.

Surprisingly, when the data was analysed and intelligence was stripped out of the results, genetics still played a major role in GCSE performance – accounting for a lower percentage, but still between 45 per cent and 58 per cent of exam results.

Each twin pair grew up in the same home and attended the same schools, so the researchers could take environmental impact to be constant.

They then compared the GCSE results of the identical twins - who share 100 per cent of their genes - with those of the non-identical twins - who share only 50 per cent of their genes.

By comparing the two sets and subtracting the impact of environment, the scientists disentangled the comparative weight of nature and nurture on the GCSE scores.

The twins were also tested for intelligence to see what role it played in GCSE results. Intelligence is highly heritable – if our parents are bright sparks, we are likely to be as well.

Surprisingly, when the data was analysed and intelligence was stripped out of the results, genetics still played a major role in GCSE performance – accounting for a lower percentage, but still between 45 per cent and 58 per cent of exam results.

The researchers suggest this is because other factors – which also have a high genetic component – such as personality and motivation may be playing a role in exam scores.

Dr Rimfeld said: 'Our findings suggest that many of the same genes influence achievement across a broad range of disciplines, moving beyond core subjects such as English and maths to include humanities, business, art and languages.

'For the first time, we found that these general genetic effects on academic achievement remained even when the effects of general intelligence were removed.'
Scientists from King's College London analysed genetic data from 12,500 identical and non-identical twins to assess the importance of genetic factors in academic achievement (file image)

Scientists from King's College London analysed genetic data from 12,500 identical and non-identical twins to assess the importance of genetic factors in academic achievement (file image)

She added: 'What does it all mean? These results don't have specific implications for teachers in the classroom right now but they do add to the knowledge of why children do differ so widely in their educational achievement.'

The researchers say in the future, educational techniques could take into account genetic factors.

Robert Plomin, another of the study's authors said understanding which genetic factors influence education could lead to 'educationalists develop effective personalised learning programmes, to help every child reach their potential by the end of compulsory education.'

Teachers, however, greeted the study with caution.

Christine Blower, General Secretary of the National Union of Teachers, said: 'Teachers remain committed to the idea that all students are capable of success, and that low expectations – easily derived from research like this – are a major obstacle to such success.'

Prof John Hardy, Professor of Neuroscience, UCL, said: 'Twin studies are a mainstay of behavioural genetics, but they make a simple assumption that is unlikely to be true: that is that we treat identical twins the same as we treat non-identical twins (who look much more different from each other).

'These results are interesting, therefore, but by no means definitive and it would be unwise to make educational decisions based on these data.'

Professor Timothy Spector, Professor of Genetic Epidemiology, King's College London, said: 'Studies showing exam achievements (like IQ) have a strong genetic influence are not new. Unfortunately they are usually over-interpreted as presenting falsely a notion of fixed destiny.'

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