For adults,heritability estimates average around .60 to .80; that is,the majority of the variance in IQ scores is explainable by genetic differences.

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This statement is true. Heritability estimates for IQ indicate that genetic differences account for a significant portion of the variance in IQ scores among adults, with estimates typically ranging from .60 to .80. However, it is important to note that heritability estimates refer to the proportion of variance in a trait that is attributable to genetic differences, and do not necessarily indicate the exact percentage of a trait that is determined by genes. Other factors beyond genetics, such as environment, also play a role in shaping IQ scores.

For Adults,heritability Estimates Average Around