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, lower crime/corruption but does not measure creativity, emotional intelligence, motivation, wisdom or physical prowess. Declining IQ is linked to poor nutrition, exposure to toxins, pollution, lower education standards, poverty, family instability, chronic illness and mental health issues. National IQ can also be affected by migration effects, birth rate differences and familiarity with test formats.