Marital fertility 
Nobel Prize-winning economist George Akerlof explained his findings in non technical terms in Slate magazine:
“Although doubt will always remain about what causes a change in social custom, the technology-shock theory does fit the facts. The new reproductive technology was adopted quickly, and on a massive scale. Marital and fertility patterns changed with similar drama, at about the same time."
1962, birth control pills, after a decade, are widely available to women in US & Europe.
- Pursell on technology's influence on gender.
- Pacey on technology and gender.
- contraceptives.
