Question

Role of heredity and environment in determining intelligence. from book psychological foundation of education.author.dr.s.k.mangal

Answer 1

Intelligence runs from one generation to another in families.

Adopted children show the intelligence of their biological parents.

Most research scientists around the world believe that intelligence is 60 to 80 % dependent on genes.

Role of environment

Brothers or sisters living with parents having high IQ will show greater intelligence.

Unrelated children brought up in same house and school will show similar IQ.

IQ reduces to lower levels when children are brought up in poverty, isolation and orphanages.

Answer 2

Explanation:

Role of heredity and environment in determining intelligence