An IQ (intelligence quotient) of 140 places someone in the 99.4th percentile of intelligence, meaning they score higher than approximately 99.4% of the population. IQ tests are designed so that the average score is 100 with a standard deviation of 15 points, making 140 roughly four standard deviations above the mean—an exceptionally rare score.
At this level, individuals typically demonstrate exceptional abilities in abstract reasoning, pattern recognition, processing speed, and verbal or mathematical comprehension. People with IQs this high often excel in academic settings, research, problem-solving, and creative work that requires sophisticated cognitive flexibility.
However, IQ tests measure specific cognitive abilities rather than overall intelligence, wisdom, creativity, emotional intelligence, or practical success. Someone with an IQ of 140 may be brilliant at logical puzzles or theoretical mathematics but face challenges in other domains like interpersonal skills, artistic expression, or applied problem-solving. Additionally, IQ scores can vary slightly depending on the test used, the person's educational background, test anxiety, and other situational factors.
For context, IQs above 130 are sometimes classified as "very superior" or "gifted," and scores above 140 are occasionally referenced in discussions of exceptionally gifted individuals, though such extreme scores are so rare that they become increasingly difficult to measure reliably.