The heritability coefficient of intelligence is roughly 0.5, meaning:
A) 50 percent of intelligence is due to genetics, and 50 percent is due to environmental factors.
B) 50 percent of intelligence is due to genetics, and 50 percent is due to unspecified factors.
C) intelligence is completely determined by genes in 50 percent of the population.
D) about 50 percent of the variability in intelligence scores can be explained by genetic differences.
Correct Answer:
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