Chapter
Heritability of Personality and Intelligence
41:29 - 45:48 (04:18)
Studies show that personality traits like aggression are less heritable than intelligence, which increases linearly throughout the lifespan due to genetics not being hardwired in the brain. However, childhood behavior can also predict future violent tendencies.
Clips
While some personality traits like aggression are about 40% heritable, the inheritability of IQ increases throughout the lifespan, from 20% in infancy to potentially 80% later in life.
41:29 - 45:48 (04:18)
Psychology
Summary
While some personality traits like aggression are about 40% heritable, the inheritability of IQ increases throughout the lifespan, from 20% in infancy to potentially 80% later in life. This could be explained by genetics not being hardwired in the brain, leading to variations in how different inherited traits present themselves in individuals.