Stefan Molyneux speaks with Dr. Helmuth Nyborg about human intelligence, including: general intelligence factor, racial differences in intelligence, impact of age on intelligence, gender differences in intelligence, physical differences between ethnicities, brain size, regression to the mean and the unintended consequences of third world immigration. Dr. Helmuth Nyborg is a retired professor of developmental psychology at Aarhus University in Denmark - and is the author of many studies on human intelligence, personality, evolution, hormones and achievement. For more from Dr. Nyborg, please go to: Freedomain Radio is 100% funded by viewers like you. Please support the show by signing up for a monthly subscription or making a one time donation at: