Intelligence: Interplay of Nature and Nurture

Intelligence: Interplay of Nature and Nurture/ Product of complex interaction of Nature and Nurture

Correlation of intelligence:

1. Identical twins reared together - 0.90
2. Identical twins reared in different environments - 0.72 
3. Fraternal twins reared together - 0.60
4. Siblings reared together - 0.50
5. Siblings reared apart - 0.25

• Children's intelligence is more similar to their biological rather than adoptive parents. However, as children grow in age, their intelligence level tends to move closer to that of their adoptive parents.
• Environmental deprivation lowers intelligence while rich nutrition, good family background and quality of schooling increases intelligence. 
• Heredity is something that sets a range within which an individual's development is actually shaped by the support and opportunities of the environment.