What American has the highest IQ?

Christopher Michael Langan (born March 25, 1952) is an American horse rancher and autodidact who has been reported to score very highly on IQ tests….

Christopher Langan
Nationality American
Education Reed College Montana State University–Bozeman
Occupation Horse rancher
Known for High IQ

Does IQ increase with age?

Age. IQ can change to some degree over the course of childhood. In one longitudinal study, the mean IQ scores of tests at ages 17 and 18 were correlated at r=0.86 with the mean scores of tests at ages five, six, and seven and at r=0.96 with the mean scores of tests at ages 11, 12, and 13.

Is IQ inherited?

IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults. The heritability of IQ increases with age and reaches an asymptote at 18–20 years of age and continues at that level well into adulthood.

How rare is a 160 IQ?

By the current “deviation IQ” definition of IQ test standard scores, about two-thirds of all test-takers obtain scores from 85 to 115, and about 5 percent of the population scores above 125….Historical IQ classification tables.

IQ Range (“ratio IQ”) Percent of Group
160–169 0.03
150–159 0.2
140–149 1.1
130–139 3.1

What is an IQ of 125?

Historical IQ classification tables

IQ Range (“ratio IQ”) IQ Classification
150–174 Very superior
125–149 Superior
115–124 Very bright
105–114 Bright

What causes IQ to drop?

Micronutrients and vitamin deficiencies. Micronutrient deficiencies (e.g. in iodine and iron) influence the development of intelligence and remain a problem in the developing world. For example, iodine deficiency causes a fall, on average, of 12 IQ points.

Who had an IQ of 260?

William James Sidis
He entered Harvard at age 11 and, as an adult, was claimed to have an extremely high IQ, and to be conversant in about 25 languages and dialects….

William James Sidis
Born April 1, 1898 Manhattan, New York City, U.S.
Died July 17, 1944 (aged 46) Boston, Massachusetts, U.S.

What is considered a good IQ?

A good IQ score is considered to be 110 and above and is classed as superior. A very good IQ score is 120-139 and is ranked as very excellent. A score of 140 and above is seen as being at genius level.

What is the average IQ of a male?

The average IQ is 100. A score above 100 is considered as above average, while a score below 100 is considered as a below average. An IQ score much below 50 or above 150 is usually not noticed. Studies show that the IQ of half of the population is between 90 and 110, while 25% have higher IQ’s, and 25% have lower IQ’s.

What is the average IQ score for Americans?

Most people (about 68 percent) have an IQ between 85 and 115. Only a small fraction of people have a very low IQ (below 70) or a very high IQ (above 130). The average IQ in the United States is 98.

Which state has the lowest IQ?

Study found most intelligent states are Massachusetts, New Hampshire, North Dakota, Vermont and Minnesota. The states with the lowest IQ were found to be Mississippi, Alabama, New Mexico, Louisiana and California.