The Flynn Effect

• The Flynn effect: What is it?

  • The average IQ test score has increased at a remarkable rate in most industrialized societies throughout the 20th Century.

  
• The Flynn effect: Why?

  We need to focus on environmental influences, because the change is far too rapid for genetic influence.

  • Length of schooling?
  • Child-rearing practices?
  • Nutrition?
  • Test taking sophistication?