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Meaning of Heritability

APPSY-OF4YXP

Suppose a group of people living in the suburbs in California and a group of Aborigines living in Australia take an intelligence test, and the people from California score 20 IQ points higher than the Aborigines. Suppose the heritability of intelligence between these groups is 75%.

What statement is accurate based on this finding?

A

75% of an individual's intelligence comes from genetic factors and 25% comes from the environment.

B

We can conclude that the people in California have better genes for intelligence than do Aborigines.

C

Since the heritability of intelligence is so high, the environment has little effect on intelligence.

D

75% of the difference between the IQ scores (a total of 15) is attributable to genetic factors.

E

The Intelligence test was obviously biased in favor of the Californians because there is no evidence that intelligence is shaped by genetic factors.