Determining smartest countries faces challenges due to various factors. Richard Lynn's 2019 study measured IQ across 132 nations. Lynn's estimates face criticism for using unreliable data
Breaking routines and challenging brain pathways can increase IQ by one standard deviation. Regular exercise and 7-9 hours of sleep enhance brain function. Meditation improves blood flow and concentration for 30 minutes daily. New experiences and learning new skills strengthen brain connections
Terence Tao holds the highest IQ at 225-230, known as the 'Mozart of Maths'. Marilyn vos Savant holds the record at 228, though her record was discontinued in 1990. Christopher Hirata has the second-highest confirmed IQ at 225
Stephen Hawking holds the record with an IQ of 160. Albert Einstein scored between 160-190 on IQ tests. Christopher Langan achieved a score of 190-210. Kim Ung-Yong scored 210. K. Visalini holds the record at 225
Rats are natural students with human-like brain structure and problem-solving abilities. Pigeons can recognize all 26 English letters and show complex self-awareness. Crows are tool-using non-primates with largest avian brains. Pigs are highly trainable with 20 different communication sounds. Octopuses use high-order planning and can disguise themselves as rocks
Marilyn vos Savant holds the record with an IQ of 228 in 1988. William James Sidis had an IQ between 250-300, speaking eight languages at age eight. Japan has the highest average IQ (106.49), but few people reach the top list