Final answer:
The studies of adopted children provide evidence for hereditary influence on intelligence. The Minnesota Study of Twins Reared Apart is a famous study that supports the genetic component to intelligence. However, environmental factors also play a role in a child's intellectual development.
Step-by-step explanation:
The studies of adopted children provide another line of evidence for hereditary influence on intelligence. Research has shown that adopted children tend to have IQ scores that are more similar to their biological parents than their adoptive parents. This suggests that genetics play a significant role in determining intelligence.
One famous study, the Minnesota Study of Twins Reared Apart, found that identical twins raised apart had higher correlations between their IQ scores compared to siblings or fraternal twins raised together. This study provides evidence for a genetic component to intelligence.
It is important to note, however, that genetics is not the sole determinant of intelligence. The environment in which a child is raised also has an impact on their intellectual development. Intellectual stimulation and supportive parenting can contribute to higher intelligence levels.