What is the average IQ in the US?

Answer 1

According to Lynn and VanHannen's IQ and the Wealth of Nations, the population of the US has an average IQ of 98, with the average IQ of England as the standard at 100. US average IQ ranks 18 from the top as of late 2010.

Average intelligence (the "g" factor") has more relevance than IQ because of the specific characteristics of IQ tests which focus on different facets of intelligence. Average intelligence by racial group arrays as follows:

Oriental - 103

Caucasian - 100

Non-white Hispanic - 90

Black - 84

The US contains about 75 million people with IQ below 85, the level needed to graduate from high school. The average IQ of a nation directly correlates to and determines its productivity (Gross National Product), its level of political liberty, and its level of rule of law. See La Griffe du Lion's Smart Fraction Theory for more information (http://LaGriffeDuLion.com)..

The average IQ of the US falls as the US imports people from third world countries like Mexico (average IQ 87) and Haiti (average IQ 72), and as low IQ people in the USA procreate without restraint.

Answer 2

By definition, the "average" IQ in the U.S. is 100. In the early days of IQ measurement, this was computed for children by dividing the "mental age" of an individual (as estimated by performance on a test) by the person's chronological age, and then multiplying that ratio by 100. The division was the reason the measure was called an intelligence quotient. When the performance was average for an age group, the ratio was "1/1" and equaled 100 after the final multiplication.

Now, more sophisticated sampling techniques are used to obtain a cross-section of the U.S. population who are tested to find out what test items differentiate performances within a given age group. These performances are statistically normed so that the average score is 100.