Interactive IQ Chart for G20 Nations: 1970 to 2025

High IQ is strongly correlated with general intelligence, job performance, learning speed, problem-solving ability, income, national economic productivity, political stability and lower crime/corruption but does not measure creativity, emotional intelligence, motivation, wisdom or athletic skill. Declining IQ is linked to poor nutrition, exposure to toxins, pollution, poor education, poverty, family instability, chronic illness and mental health issues. National IQ scores can also be affected by migration, birth rates and familiarity with test formats.