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The 1981 article "Average IQ values in various European countries" by Vinko Buj is the only international IQ study that over a short time period has compared IQs using the same IQ test. Rindermann (2007) states that it is of dubious quality with scant information regarding how it was done. [3] [4]
Some criticisms have focused on the limited number of studies upon which the book is based. The IQ figures are based on 3 different studies for 17 nations, two studies for 30 nations, and one study for 34 nations. There were actual tests for IQ in the case of 81 countries out of the 185 countries studied.
Although IQ differences between individuals have been shown to have a large hereditary component, it does not follow that mean group-level disparities (between-group differences) in IQ necessarily have a genetic basis. [140] [141] The scientific consensus is that there is no evidence for a genetic component behind IQ differences between racial ...
The study on religion and intelligence has been ongoing since the 1920s and conclusions and interpretations have varied in the literature due to different measures for both religiosity and intelligence. [4] Some studies find negative correlation between intelligence quotient (IQ) and religiosity.
A Daily News analysis of vaccination data and IQ averages in each state reveals new patterns among anti- and pro-vaxxers, with five of the 10 states with the lowest IQs landing among the 10 states ...
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, 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.
Early IQ tests were also used to argue for limits to immigration to the US. Already in 1917, Goddard reported on the low IQ scores of new arrivals at Ellis Island. Yerkes argued on the basis of his army test scores that there were consistently lower IQ levels among those from Southern and Eastern Europe, which he suggested could lead to a ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 1 February 2025. World map of countries or territories by Human Development Index scores in increments of 0.050 (based on 2022 data, published in 2024) ≥ 0.950 0.900–0.950 0.850–0.899 0.800–0.849 0.750–0.799 0.700–0.749 0.650–0.699 0.600–0.649 0.550–0.599 0.500–0.549 0.450–0.499 0. ...