Japan consistently ranks at or near the top for average national IQ, with recent estimates placing it around 106.48, often just above Taiwan and Singapore, reflecting strong performance in education, especially STEM, though these figures rely on varied datasets and tests. While some sources like Intelpoint (2025 data) list Japan highest, other reports might show China or South Korea leading depending on the specific test and year, but Japan remains a global leader.
The average IQ of countries around the world can range, from Indiana at 76.24 to China at 104.10. Other examples of average IQ by country from The Intelligence of Nations report include: Finland: 101.20.
Those who have adapted to the harsh northern climate worldwide are taller, more intelligent, more pro-social, less crime prone, and exhibit less fertility. This is said to be due to the more cognitively demanding long winter season (Lynn, 2006, Lynn, 2008).
Average IQ by Country — 2026 Rankings Based on results from the International IQ Test (2025), this infographic presents the top 20 countries by average IQ worldwide: 1. 🇰🇷 South Korea — 106.97 2. 🇨🇳 China — 106.48 3. 🇯🇵 Japan — 106.30 4.
Scores of 80 to 89 are considered low average. Scores of 70 to 79 are considered borderline impaired. Scores of 55 to 69 are considered a mild impairment. Scores of 40 to 54 are considered a moderate impairment.
Snoop Dogg has claimed to have an IQ of 147, a score he revealed on Instagram, which classifies as "highly gifted" or genius level, despite graduating high school with straight C's and considering himself a poor student. While the exact test isn't verified, he has expressed surprise at his own high score, contrasting it with his academic struggles, but acknowledges his brilliance in music and business, notes Esquire Australia and Brainmanager.io.
The vast majority of people in the United States have I.Q.s between 80 and 120, with an I.Q. of 100 considered average. To be diagnosed as having mental retardation, a person must have an I.Q. below 70-75, i.e. significantly below average.
There is no evidence that he ever took an IQ test. However, that has not stopped some people from trying to determine how smart he was. According to some sources, Einstein's IQ was probably about 160, which is commonly considered genius level. This number is largely derived from his achievements in physics.
No, an IQ of 97 is not considered dumb; it falls squarely in the average range (90-109), indicating typical cognitive abilities, though some tests might place it slightly below the exact midpoint of 100. An IQ score of 97 means you performed better than 42% of people, and due to the test's margin of error, your score could be anywhere from the high 80s to the mid-100s, still within normal intelligence.
The Japanese 80/20 rule primarily refers to "Hara Hachi Bu" (腹八分), a Confucian principle from Okinawa meaning to stop eating when you're about 80% full, not completely stuffed, which promotes mindfulness, weight control, and longevity by preventing overeating. It's a practice of moderation, eating slowly, and listening to your body's fullness cues, linked to the long lifespan of Okinawans.
According to Coren, scores on intelligence tests decline cumulatively on each successive day you sleep less than you usually sleep. The daily decline is approximately one IQ point for the first hour of sleep loss, two for the next, and four for the next.
Can IQ change with age? Yes. However, there is heavy debate over exactly how IQ and intelligence change with age. Studies have demonstrated that a person's fluid intelligence tends to decrease starting in their late 20s, while their crystallized intelligence tends to increase as they grow older.
An IQ score of 130 or higher is generally considered the threshold for giftedness, placing an individual in the top 2% of the population, though this can vary slightly by test and definition, with higher scores indicating more profound levels like Highly Gifted (145-159) or Exceptionally Gifted (160+). While 130+ is common for educational programs, some consider IQs from 115-129 as "mildly gifted" or "bright," showing above-average ability, notes the Davidson Institute.
Lady Gaga's IQ is widely rumored to be around 166, placing her in the "exceptionally gifted" or genius category, though this is an estimation often cited in celebrity lists, not a officially verified number from a public test. This high estimate is supported by her early academic achievements, like attending a summer program for the top 1% of students, and her demonstrated creative and musical genius as a composer and performer, notes Us Weekly and Brainmanager.io.
Stephen Hawking never officially revealed his IQ, and often dismissed the metric, famously saying, "People who boast about their IQ are losers". While estimates place his IQ around 160, a genius level, this is speculative; Hawking emphasized that creativity, persistence, and passion for science were more important than a single score, despite his profound impact on physics.
Bean has one of the highest IQs in the world — 178! 🧠🎭 Rowan Atkinson carved his name into history as one of the most iconic comedians on the planet. His legendary character, Mr.
Matt Damon's IQ is widely reported as being very high, with many sources citing figures around 160, placing him in the genius category, though some reports mention figures like 143 or 150, with 160 being the most common estimate, despite him dropping out of Harvard. He demonstrated significant intelligence by writing the script for Good Will Hunting for a Harvard playwriting class.
Celebrity Genius 5 - James Woods
Emmy Award winner James Woods is an Oscar-nominee and superstar has a whopping IQ of 180. While in high school, Woods was in a UCLA linear algebra course.
Is Kim Kardashian's IQ really 190? No—it's a baseless rumor from unreliable sites. No verified score exists; estimates range 95–119 based on her education & career, but her actual IQ remains unknown.
Meaning of IQ
85 to 115 - Two thirds of us have an IQ in this range: the 'average' IQ is 100. Over 135 - You are in the top 1%.
Studies have shown that intelligence has a genetic component, but they have not conclusively identified any single genes that have major roles in differences in intelligence. It is likely that intelligence involves many genes that each make only a small contribution to a person's intelligence.
Approximate IQ range of 50 to 69 (in adults, mental age from 9 to under 12 years). Likely to result in some learning difficulties in school. As adults individuals will be able to work and maintain good social relationships and contribute to society.