Tag Archives: Intelligence

King’s College London study: childhood drawings indicate later intelligence

21 Aug

Many children begin their first day of school behind their more advantaged peers. Early childhood learning is an important tool is bridging the education deficit. https://drwilda.wordpress.com/2012/01/03/early-learning-standards-and-the-k-12-contiuum/
Rebecca Klein of Huffington posted in the article, This Is What Could Close The Achievement Gap Among Young Kids, Study Says:

Just a few years of high-quality early childhood education could close the academic achievement gap between low-income and affluent students, a new study suggests.
The study, conducted by two university professors, analyzed previous data from a now-defunct program that offered free preschool to students from different social backgrounds.
Using this data, the researchers found that after providing low-income children with quality preschool early in life, the kids had the same IQs as their wealthier peers by age… http://www.huffingtonpost.com/2014/01/07/preschool-achievement-gap_n_4556916.html

A King’s College study is intriguing because it points to the value of early cognitive stimulation

Science Daily reported in the article, Children’s drawings indicate later intelligence, study shows:

At the age of 4, children were asked by their parents to complete a ‘Draw-a-Child’ test, i.e. draw a picture of a child. Each figure was scored between 0 and 12 depending on the presence and correct quantity of features such as head, eyes, nose, mouth, ears, hair, body, arms etc. For example, a drawing with two legs, two arms, a body and head, but no facial features, would score 4. The children were also given verbal and non-verbal intelligence tests at ages 4 and 14.
The researchers found that higher scores on the Draw-a-Child test were moderately associated with higher scores of intelligence at ages 4 and 14. The correlation between drawing and intelligence was moderate at ages 4 (0.33) and 14 (0.20).
Dr Rosalind Arden, lead author of the paper from the MRC Social, Genetic and Developmental Psychiatry (SGDP) Centre at the Institute of Psychiatry at King’s College London, says: “The Draw-a-Child test was devised in the 1920’s to assess children’s intelligence, so the fact that the test correlated with intelligence at age 4 was expected.What surprised us was that it correlated with intelligence a decade later.”
“The correlation is moderate, so our findings are interesting, but it does not mean that parents should worry if their child draws badly. Drawing ability does not determine intelligence, there are countless factors, both genetic and environmental, which affect intelligence in later life….”
http://www.sciencedaily.com/releases/2014/08/140818204114.htm

Citation:

Children’s drawings indicate later intelligence, study shows
Date: August 18, 2014
Source: King’s College London
Summary:
How 4-year-old children draw pictures of a child is an indicator of intelligence at age 14, according to a new study. The researchers studied 7,752 pairs of identical and non-identical twins and found that the link between drawing and later intelligence was influenced by genes.
Genes Influence Young Children’s Human Figure Drawings and Their Association With Intelligence a Decade Later
1. Rosalind Arden1
2. Maciej Trzaskowski1
3. Victoria Garfield2
4. Robert Plomin1
1. 1MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King’s College London
2. 2Department of Epidemiology and Public Health, University College London
1. Rosalind Arden, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King’s College London, PO80, De Crespigny Park, London, United Kingdom SE5 8AF E-mail: rosalind.arden@kcl.ac.uk
1. Author Contributions R. Arden and M. Trzaskowski would like to be considered as joint first authors. R. Arden developed the study concept. R. Arden, M. Trzaskowski, and R. Plomin contributed to the study design. R. Arden and M. Trzaskowski performed the data analyses. R. Arden drafted the manuscript, and all authors provided critical revisions. All authors approved the final version of the manuscript for submission.
Abstract
Drawing is ancient; it is the only childhood cognitive behavior for which there is any direct evidence from the Upper Paleolithic. Do genes influence individual differences in this species-typical behavior, and is drawing related to intelligence (g) in modern children? We report on the first genetically informative study of children’s figure drawing. In a study of 7,752 pairs of twins, we found that genetic differences exert a greater influence on children’s figure drawing at age 4 than do between-family environmental differences. Figure drawing was as heritable as g at age 4 (heritability of .29 for both). Drawing scores at age 4 correlated significantly with g at age 4 (r = .33, p < .001, n = 14,050) and with g at age 14 (r = .20, p < .001, n = 4,622). The genetic correlation between drawing at age 4 and g at age 14 was .52, 95% confidence interval = [.31, .75]. Individual differences in this widespread behavior have an important genetic component and a significant genetic link with g.
This article is distributed under the terms of the Creative Commons Attribution 3.0 License (Creative Commons — Attribution 3.0 Unported — CC BY 3.0) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (http://www.uk.sagepub.com/aboutus/openaccess.htm).

Here is the press release from King’s College:

Home | Institute of Psychiatry | News and events | News Stories | Children’s drawings indicate later intelligence
News
Children’s drawings indicate later intelligence
Posted on 19/08/2014
How 4-year old children draw pictures of a child is an indicator of intelligence at age 14, according to a study by the Institute of Psychiatry at King’s College London, published today in Psychological Science.
The researchers studied 7,752 pairs of identical and non-identical twins (a total of 15,504 children) from the Medical Research Council (MRC) funded Twins Early Development Study (TEDS), and found that the link between drawing and later intelligence was influenced by genes.
At the age of 4, children were asked by their parents to complete a ‘Draw-a-Child’ test, i.e. draw a picture of a child. Each figure was scored between 0 and 12 depending on the presence and correct quantity of features such as head, eyes, nose, mouth, ears, hair, body, arms etc. For example, a drawing with two legs, two arms, a body and head, but no facial features, would score 4. The children were also given verbal and non-verbal intelligence tests at ages 4 and 14.
The researchers found that higher scores on the Draw-a-Child test were moderately associated with higher scores of intelligence at ages 4 and 14. The correlation between drawing and intelligence was moderate at ages 4 (0.33) and 14 (0.20).
Dr Rosalind Arden, lead author of the paper from the MRC Social, Genetic and Developmental Psychiatry (SGDP) Centre at the Institute of Psychiatry at King’s College London, says: “The Draw-a-Child test was devised in the 1920’s to assess children’s intelligence, so the fact that the test correlated with intelligence at age 4 was expected. What surprised us was that it correlated with intelligence a decade later.”
“The correlation is moderate, so our findings are interesting, but it does not mean that parents should worry if their child draws badly. Drawing ability does not determine intelligence, there are countless factors, both genetic and environmental, which affect intelligence in later life.”
The researchers also measured the heritability of figure drawing. Identical twins share all their genes, whereas non-identical twins only share about 50 percent, but each pair will have a similar upbringing, family environment and access to the same materials.
Overall, at age 4, drawings from identical twins pairs were more similar to one another than drawings from non-identical twin pairs. Therefore, the researchers concluded that differences in children’s drawings have an important genetic link. They also found that drawing at age 4 and intelligence at age 14 had a strong genetic link.
Dr Arden explains: “This does not mean that there is a drawing gene – a child’s ability to draw stems from many other abilities, such as observing, holding a pencil etc. We are a long way off understanding how genes influence all these different types of behaviour.”
Dr Arden adds: “Drawing is an ancient behaviour, dating back beyond 15,000 years ago. Through drawing, we are attempting to show someone else what’s in our mind. This capacity to reproduce figures is a uniquely human ability and a sign of cognitive ability, in a similar way to writing, which transformed the human species’ ability to store information, and build a civilisation.”
Paper reference: Arden, R. et al. ‘Genes influence young children’s human figure drawings, and their association with intelligence a decade later’ published in Psychological Science doi:10.1177/0956797614540686
For further information, please contact Seil Collins, Press Officer, Institute of Psychiatry, King’s College London seil.collins@kcl.ac.uk / (+44) 0207 848 5377

Teachers and schools have been made TOTALLY responsible for the education outcome of the children, many of whom come to school not ready to learn and who reside in families that for a variety of reasons cannot support their education. All children are capable of learning, but a one-size-fits-all approach does not serve all children well. Different populations of children will require different strategies and some children will require remedial help, early intervention, and family support to achieve their education goals. https://drwilda.com/2012/02/11/3rd-world-america-money-changes-everything/

ALL children have a right to a good basic education.

Resources:
The Global Creativity Index http://www.theatlanticcities.com/jobs-and-economy/2011/10/global-creativity-index/229/

The Rise of the Creative Class
http://www.washingtonmonthly.com/features/2001/0205.florida.html

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IQ might not be the best measure of intelligence

29 Dec

Moi wrote about IQ tests in After the Bell Curve: Research starts the conversation about IQ, again:

Cam Soucy has written an excellent summary of IQ tests for the Livestrong site in the article, What Is the Definition of IQ Test?

History

French psychologist Alfred Binet developed the the first IQ-style tests at the beginning of the 20th century. The first tests were designed only to assess the intelligence of children. The U.S. military relied on intelligence testing to assess and place recruits during World Wars I and II. Psychologist David Wechsler used the military IQ tests as a model in devising his own test in 1949. Today, a group of tests derived from Wechsler’s work are the most widely used IQ tests.

Download Free White Paper on assessment and teaching from CTB/McGraw-Hill CTB.com

Tests

The fourth version of the Wechsler Intelligence Scale for Children, the WISC-IV, was released in 2009. A companion test, the Wechsler Adult Intelligence Scale, targets people 16 and older. Other frequently used IQ tests include the Stanford-Binet Intelligence Scale, the Das-Naglieri Cognitive Assessment System and the Kaufman Assessment Battery for Children.

Elements

IQ tests commonly assess the taker’s logical reasoning, math ability, spatial-relations skills, short-term memory and problem-solving skills.

Scoring

IQ tests originally were scored by dividing the subject’s “mental age,” as determined by which questions she answered correctly on the test, by her “chronological age,” her actual age in years, then multiplying that quotient by 100. For example, an 8-year-old child with a mental age of 12 would have an IQ of 125, with the calculation being 12/8 = 1.25, and 1.25 x 100 = 125. A person whose mental age precisely matched his actual age would have an IQ of 100, so a 100 IQ was defined as “average.”
Modern IQ tests no longer use such a formula. They simply compare a person’s test results with those of everyone else in the same age group, on a scale where 100 is defined as average intelligence.

Criticism

Criticism of IQ tests focuses on the content of the tests–that is, the type of questions they ask–and their application. Such areas as vocabulary and “logic” can be strongly influenced by culture and socioeconomics. For example, consider a test that asks what word goes best with “cup”: saucer, plate or bowl. The test may intend “saucer” to be the correct answer. However, a test-taker who grew up in a home where tables weren’t set in a formal fashion might not know what a saucer is. He may be just as “intelligent” as the next person, but his score will suffer because of cultural factors. Authors of IQ tests are continually refining tests to address such concerns; some tests have removed verbal elements entirely.
Even test creators argue that the results are only one tool for assessing a person’s abilities, and that “intelligence” in a person is not a fixed quality, but changeable–even from day to day. In reality, however, people and institutions tend to put great weight on IQ scores. Students have been labeled “learning disabled” based on the outcome of IQ tests alone. As authors revise their tests, they also are revising their instructions to stress the tests’ limited application. http://www.livestrong.com/article/130019-definition-iq-test/

Daniel Willingham, cognitive scientist and a psychology professor at the University of Virginia and author of “Why Don’t Students Like School?” His next book, “When Can You Trust The Experts? How to tell good science from bad in education,” will be published in July. He is written an interesting summary of his latest IQ study for the Washington Post.

In IQ: Willingham on the newest thinking, Willingham makes the following comments:

The importance of the environment for IQ is established by the 12 to 18 point increase in IQ observed when children are adopted from working-class to middle-class homes. In most developed countries studied, gains on IQ tests have continued, and they are beginning in the developing world Sex differences in some aspects of intelligence are due partly to biological factors and partly to socialization factors. The IQ gap between blacks and whites in the United States has been reduced by 0.33 standard deviations in recent years. http://www.washingtonpost.com/blogs/answer-sheet/post/iq-willingham-on-the-newest-thinking/2012/05/12/gIQAB9J9JU_blog.html

Here is the citation and abstract of the work Willingham is commenting about:

Nisbett, R. E., Aronson, J., Blair, C., Dickens, W., Flynn, J., Halpern, D. F., & Turkheimer, E.

(2012, January 2). Intelligence: New Findings and Theoretical Developments. American Psychologist. Advance online publication. doi: 10.1037/a0026699

http://scottbarrykaufman.com/wp-content/uploads/2012/01/Nisbett-et-al.-2012.pdf

We review new findings and new theoretical developmentsin the field of intelligence. New findings include the following:

(a) Heritability of IQ varies significantly by social class. (b) Almost no genetic polymorphisms have been discovered that are consistently associated with variation in IQ in the normal range. (c) Much has been learned about the biological underpinnings of intelligence. (d) “Crystallized” and “fluid” IQ are quite different aspects of intelligence at both the behavioral and biological levels. (e) The importance of the environment for IQ is established by the 12-point to 18-point increase in IQ when children are adopted from working-class to middle-class homes. (f) Even when improvements in IQ produced by the most effective early childhood interventions fail to persist, there can be very marked effects on academic achievement and life outcomes. (g) In most developed countries studied,gains on IQ tests have continued, and they are beginning in the developing world. (h) Sex differences in aspects of intelligence are due partly to identifiable biological factors and partly to socialization factors. (i) The IQ gap between Blacks and Whites has been reduced by 0.33 SD in recent years. We report theorizing concerning (a) the relationship between working memory and intelligence, (b) the apparent contradiction between strong heritability effects on IQ and strong secular effects on IQ, (c) whether a general intelligence factor could arise from initially largely independent cognitive skills, (d) the relation between self-regulation and cognitive skills, and (e) the effects of stress on intelligence. https://drwilda.com/2012/05/13/after-the-bell-curve-research-starts-the-conversation-about-iq-again/

IQ is not a simple concept and this newest research points to more questions than answers.

Michelle Castillo of CBS News reports about IQ in IQ scores not accurate marker of intelligence, study shows:

Could IQ scores be a false indicator of intelligence?

Researchers have determined in the largest online study on the intelligence quotient (IQ) that results from the test may not exactly show how smart someone is.

“When we looked at the data, the bottom line is the whole concept of IQ — or of you having a higher IQ than me — is a myth,” Dr. Adrian Owen, the study’s senior investigator and the Canada Excellence Research Chair in Cognitive Neuroscience and Imaging at the university’s Brain and Mind Institute said to the Toronto Star. “There is no such thing as a single measure of IQ or a measure of general intelligence.”

More than 100,000 participants joined the study and completed 12 online cognitive tests that examined memory, reasoning, attention and planning abilities. They were also asked about their background and lifestyle.

They found that there was not one single test or component that could accurately judge how well a person could perform mental and cognitive tasks. Instead, they determined there are at least three different components that make up intelligence or a “cognitive profile”: short-term memory, reasoning and a verbal component.

Scientists also scanned participants’ brains with a functional magnetic resonance imaging (fMRI) machine and saw that different cognitive abilities were related to different circuits in the brain, suggesting that the theory that different areas of the brain control certain abilities may be true.

Researchers also discovered that training one’s brain to help perform better cognitively did not help….

For some reason, people who played video games did better on reasoning and short-term memory portions of the test.

However, aging was associated with a decline on memory and reasoning abilities. Those who smoked did worse on short-term memory and verbal portions, while those with anxiety did badly on short-term memory test components.

“We have shown categorically that you cannot sum up the difference between people in terms of one number, and that is really what is important here,” Owen told the CBC…

The study was published in Neuron on Dec. 20.

Here is the citation:

Neuron, Volume 76, Issue 6, 1225-1237, 20 December 2012
Copyright © 2012 Elsevier Inc. All rights reserved.
10.1016/j.neuron.2012.06.022 

Authors

Adam Hampshiresend email, Roger R. Highfield, Beth L. Parkin, Adrian M. OwenSee Affiliations

  • Highlights
  • We propose that human intelligence is composed of multiple independent components
  • Each behavioral component is associated with a distinct functional brain network
  • The higher-order “g” factor is an artifact of tasks recruiting multiple networks
  • The components of intelligence dissociate when correlated with demographic variables

Summary

What makes one person more intellectually able than another? Can the entire distribution of human intelligence be accounted for by just one general factor? Is intelligence supported by a single neural system? Here, we provide a perspective on human intelligence that takes into account how general abilities or “factors” reflect the functional organization of the brain. By comparing factor models of individual differences in performance with factor models of brain functional organization, we demonstrate that different components of intelligence have their analogs in distinct brain networks. Using simulations based on neuroimaging data, we show that the higher-order factor “g” is accounted for by cognitive tasks corecruiting multiple networks. Finally, we confirm the independence of these components of intelligence by dissociating them using questionnaire variables. We propose that intelligence is an emergent property of anatomically distinct cognitive systems, each of which has its own capacity.

The traditional way of looking at intelligence may be limited.

Sarah D. Sparks has written a good synopsis of the report, Education for Life and Work: Developing Transferable Knowledge and Skills in the 21st Century in the Education Week article, Study: ’21st-Century Learning’ Demands Mix of Abilities:

The committee found these skills generally fall into three categories:

  • Cognitive skills, such as critical thinking and analytic reasoning;

  • Interpersonal skills, such as teamwork and complex communication; and

  • Intrapersonal skills, such as resiliency and conscientiousness (the latter of which has also been strongly associated with good career earnings and healthy lifestyles).

Stanford University education professor Linda Darling-Hammond, who was not part of the report committee, said developing common definitions of 21st-century skills is critical to current education policy discussions, such as around Common Core State Standards.

Unless we want to have just a lot of hand-waving on 21st-century skills,” Ms. Darling-Hammond said, “we need to get focused and purposeful on how to learn to teach and measure these skills, both in terms of research investments and in terms of the policies and practice that would allow us to develop and measure these skills.” http://blogs.edweek.org/edweek/inside-school-research/2012/07/study_deeper_learning_needs_st_1.html

The National Research Council has published the report, Education for Life and Work: Developing Transferable Knowledge and Skills in the 21st Century which looks at transferable knowledge and skills.

The goal is to recognize those who can contribute to society in a positive manner no matter what their raw IQ score happens to be.

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