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Nations And Intelligence
The relationship between nations and IQ is a controversial area of study concerning differences between nations in average intelligence test scores, their possible causes, and their correlation with measures of social well-being and economic prosperity. Richard Lynn and Tatu Vanhanen constructed IQ estimates for many countries using literature reviews, student assessment studies and other methodologies to create estimates, which have been widely criticized on theoretical and methodological grounds. Subsequent research by psychologists such as Earl B. Hunt, Jelte Wicherts and Heiner Rindermann has focused on identifying potential national differences in IQ, investigating possible causal factors, and determining the nature of the relationship of IQ to variables such as GDP, life expectancy, and governance. Background Earl B. Hunt writes that economists traditionally view differences in wealth between nations in terms of human capital, which is a general term for the abilitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelligence Test
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern for the German term ''Intelligenzquotient'', his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book. Historically, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months. The resulting fraction (quotient) was multiplied by 100 to obtain the IQ score. For modern IQ tests, the raw score is transformed to a normal distribution with mean 100 and standard deviation 15. This results in approximately two-thirds of the population scoring between IQ 85 and IQ 115 and about 2.5 percent each above 130 and below 70. Scores from intelligence tests are estimates of intelligence. Unlike, for example, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flynn Effect
The Flynn effect is the substantial and long-sustained increase in both fluid and crystallized intelligence test scores that were measured in many parts of the world over the 20th century. When intelligence quotient (IQ) tests are initially standardized using a sample of test-takers, by convention the average of the test results is set to 100 and their standard deviation is set to 15 or 16 IQ points. When IQ tests are revised, they are again standardized using a new sample of test-takers, usually born more recently than the first; the average result is set to 100. When the new test subjects take the older tests, in almost every case their average scores are significantly above 100. Test score increases have been continuous and approximately linear from the earliest years of testing to the present. For example, a study published in the year 2009 found that British children's average scores on the Raven's Progressive Matrices test rose by 14 IQ points from 1942 to 2008. Similar gain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Countries By GDP (PPP) Per Capita
A country's gross domestic product (GDP) at purchasing power parity (PPP) per capita is the PPP value of all final goods and services produced within an economy in a given year, divided by the average (or mid-year) population for the same year. This is similar to nominal GDP per capita, but adjusted for the cost of living in each country. In 2019, the estimated average GDP per capita (PPP) of all of the countries of the world was Int$ 18,381. For rankings regarding wealth, see list of countries by wealth per adult. Method The gross domestic product (GDP) per capita figures on this page are derived from PPP calculations. Such calculations are prepared by various organizations, including the IMF and the World Bank. As estimates and assumptions have to be made, the results produced by different organizations for the same country are not hard facts and tend to differ, sometimes substantially, so they should be used with caution. Comparisons of national wealth are frequentl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Race And Intelligence
Discussions of race and intelligence – specifically, claims of differences in intelligence along racial lines – have appeared in both popular science and academic research since the modern concept of Race (human categorization), race was first introduced. With the inception of intelligence quotient, IQ testing in the early 20th century, differences in average test performance between racial groups were observed, though these differences have fluctuated and in many cases steadily decreased over time. Further complicating the issue, modern science has shown race to be a Social constructionism, social construct rather than a biological reality, and intelligence has no undisputed definition. The validity of IQ testing as a metric for human intelligence is itself disputed. Today, the scientific consensus is that genetics does not explain differences in IQ test performance between groups, and that observed differences are environmental in origin. Pseudoscientific claims of inheren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outline Of Human Intelligence
The following outline is provided as an overview of and topical guide to human intelligence: Human intelligence is, in the human species, the mental capacities to learn, understand, and reason, including the capacities to comprehend ideas, plan, solve problems, and use language to communicate. Traits and aspects In groups * Collective intelligence * Collective wisdom * Common sense In individuals Emergence and evolution * Noogenesis Augmented with technology * Humanistic intelligence Capacities Cognition and mental processing Types of people, by intelligence High * Child prodigy ** List of child prodigies * Genius * Polymath Low * Intellectual disability Models and theories * Cattell–Horn–Carroll theory * Fluid and crystallized intelligence * General factor of intelligence * Theory of multiple intelligences * Triarchic theory of intelligence * PASS theory of intelligence * Parieto-frontal integration theory * Vernon's verbal-perceptua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Return Of Race Science
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angela Saini
Angela Saini (born in London, 1980) is a British science journalist, broadcaster and the author of books, of which the fourth, ''The Patriarchs: The Origins of Inequality'', was published in 2023. Saini has worked as a reporter and presenter for the BBC and has written for a number of publications including ''The Guardian'', ''New Scientist'', and ''Wired UK''. She has also produced and presented several radio and television documentaries, including a BBC Radio 4 documentary on biofuels and a BBC World Service documentary on the impact of climate change on Indian agriculture. Saini's writing and reporting focus on how science interacts with society, especially on how it affects marginalized groups, and she has been acclaimed for her work by a diverse range of organizations and institutions. Education She holds two master's degrees – in Engineering from the University of Oxford and in Science and Security from the Department of war studies at King's College London. She was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Science And Politics Of IQ
''The Science and Politics of I.Q.'' is a book by the psychologist Leon Kamin, originally published by Lawrence Erlbaum Associates in 1974. In the book, Kamin examines empirical evidence regarding IQ, a common measure of human intelligence, and concludes that there is no evidence that it is significantly heritable. As part of the book's broader critique of hereditarianism and psychometrics, Kamin also became the first to accuse Cyril Burt of scientific misconduct in his twin research. In the book, Kamin states one of its principal conclusions thus: "There exist no data which should lead a prudent man to accept the hypothesis that IQ test scores are in any degree heritable." Reviews The psychologist Asa Grant Hilliard III reviewed the book favorably, describing it as "thoughtful and meticulously documented" and as "a book of profound importance for the contemporary social and professional scene." In another favorable review, Raymond Lorion concluded that the book was "...a unique an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leon Kamin
Leon J. Kamin (December 29, 1927 – December 22, 2017) was an American psychologist known for his contributions to learning theory and his critique of estimates of the heritability of IQ. He studied under Richard Solomon at Harvard and contributed several important ideas about conditioning, including the " blocking effect". Early life and education Leon Kamin was born into a Jewish family in Taunton, Massachusetts; his father was a rabbi. Kamin studied psychology at Harvard. While a Harvard undergraduate, he joined the Communist Party, but dropped out of the party by 1950 and became a Harvard graduate student and teaching fellow. While a graduate student, Kamin was subpoenaed by the Jenner anti-Communist Senate committee, but he refused to name others who had been (or might have been) Communists and cited his Fifth Amendment rights. As a result, Harvard refused to renew his fellowship. Next, Joe McCarthy's anti-communist committee came to Boston, looking for Communists and ex-Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Marks (psychologist)
David Francis Marks (born 1945) is a psychologist, author and editor of numerous articles and books largely concerned with five areas of psychological research – judgement, health psychology, consciousness, parapsychology and intelligence. Marks is also the originator of the General Theory of Behaviour, and has curated exhibitions and books about artists and their works. Biography Marks was born 12 February 1945 in Liphook, Hampshire, England to Victor W.F. Marks and Mary Dorothy (née Goodman) Marks. Marks earned a BSc at University of Reading in 1966 and a PhD at University of Sheffield in 1970. From there, he moved to New Zealand where he taught at the University of Otago as lecturer then senior lecturer in psychology. He returned to the UK as Head of the School of Psychology at Middlesex University before working at City University London from 2000 to 2010. He founded the '' Journal of Health Psychology'' and '' Health Psychology Open'', an open access journal. His la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infectious Disease
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection. Infections can be caused by a wide range of pathogens, most prominently bacteria and viruses. Hosts can fight infections using their immune system. Mammalian hosts react to infections with an innate response, often involving inflammation, followed by an adaptive response. Specific medications used to treat infections include antibiotics, antivirals, antifungals, antiprotozoals, and antihelminthics. Infectious diseases resulted in 9.2 million deaths in 2013 (about 17% of all deaths). The branch of medicine that focuses on infections is referred to as infectious disease. Types Infections are caused by infectious agents (pathogens) including: * Bacteria (e.g. '' Mycobacterium tuberculosis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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