A majority of experts agree that the heritability of intelligence is approximately 50 percent. What does this mean?

Question

Quizplus · Accepted Answer

The heritability of intelligence being approximately 50 percent means that 50 percent of the variability in intelligence in a population of individuals is due to variations in genetic inheritance. This does not mean that intelligence is solely determined by genetics, nor does it suggest any differences in intelligence between different ethnic groups are due to genetic factors alone. It also does not mean that 50 percent of a single person's intelligence is due to genetics or environment. Rather, it means that genetic factors account for approximately half of the variability in intelligence across individuals in a given population.

A Majority of Experts Agree That the Heritability of Intelligence